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Let X Be the Unknown

 Let X Be the Unknown
type
FeatureClass
 Let X Be the Unknown
label
Let X Be the Unknown
 Let X Be the Unknown
page
LetXBeTheUnknown
 Let X Be the Unknown
comment
Naming something "X" makes it not only cooler, but more mysterious. "X" is often associated with anonymous persons and things that have yet to be formally named.
The fact that X represents a single unknown, generic value in mathematical equations may be partly responsible for this trope and is the source of the trope name.
See also Double X and Xtreme Kool Letterz. When used to obscure the exact year of a work's established setting, see Year X.
 Let X Be the Unknown
fetched
2024-04-11T16:46:58Z
 Let X Be the Unknown
parsed
2024-04-11T16:46:58Z
 Let X Be the Unknown
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Dropped link to BigBad: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to DGenerationX: Not an Item - IGNORE
 Let X Be the Unknown
processingComment
Dropped link to DMX: Not an Item - IGNORE
 Let X Be the Unknown
processingComment
Dropped link to GetBackers: Not an Item - UNKNOWN
 Let X Be the Unknown
processingComment
Dropped link to GiantSpaceFleaFromNowhere: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to ItCanThink: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to Jobber: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to MadScientist: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to MysteriousInformant: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to NoBudget: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to OddNameOut: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to Retcon: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to RomanceGame: Not an Item - CAT
 Let X Be the Unknown
processingComment
Dropped link to ScienceMarchesOn: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to SignificantAnagram: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to SubvertedTrope: Not an Item - CAT
 Let X Be the Unknown
processingComment
Dropped link to TheNineties: Not an Item - IGNORE
 Let X Be the Unknown
processingComment
Dropped link to TheRealRemingtonSteele: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to UpdatedRerelease: Not an Item - FEATURE
 Let X Be the Unknown
processingComment
Dropped link to lampshadehanging: Not an Item - FEATURE
 Let X Be the Unknown
processingUnknown
GetBackers
 Let X Be the Unknown
isPartOf
DBTropes
 Let X Be the Unknown / int_16543356
type
Let X Be the Unknown
 Let X Be the Unknown / int_16543356
comment
The Day Called 'X' depicts a Soviet nuclear attack on Portland taking place on an unknown date in the near future.
 Let X Be the Unknown / int_16543356
featureApplicability
1.0
 Let X Be the Unknown / int_16543356
featureConfidence
1.0
 The Day Called 'X'
hasFeature
Let X Be the Unknown / int_16543356
 Let X Be the Unknown / int_1bdeba5a
type
Let X Be the Unknown
 Let X Be the Unknown / int_1bdeba5a
comment
Taken to the x-treme with X-Men. Almost everything has an X attached to it - the Man from Room X, Planet X, x-cetera.
"Weapon X" underwent a bit of a Retcon when the X was revealed to mean "10" in Roman numerals. In an earlier comic it was supposed to be the Greek letter Chi.
The leader of the X-Men, Professor X. This is even invoked in a What If? story where Magneto, instead of splitting with Xavier, decided to stay on his side and form the X-Men with him. In that case, "X" is short for "Xavier", his actual name. Once, a flashback sequence has Moira MacTaggart point out that naming the team after himself was a bit egotistical. Xavier insists that the connection never occurred to him.
 Let X Be the Unknown / int_1bdeba5a
featureApplicability
1.0
 Let X Be the Unknown / int_1bdeba5a
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1.0
 X-Men (Comic Book)
hasFeature
Let X Be the Unknown / int_1bdeba5a
 Let X Be the Unknown / int_1c63b28a
type
Let X Be the Unknown
 Let X Be the Unknown / int_1c63b28a
comment
Earth X in the Marvel Universe.
 Let X Be the Unknown / int_1c63b28a
featureApplicability
1.0
 Let X Be the Unknown / int_1c63b28a
featureConfidence
1.0
 Earth X / Comicbook
hasFeature
Let X Be the Unknown / int_1c63b28a
 Let X Be the Unknown / int_1d45e6aa
type
Let X Be the Unknown
 Let X Be the Unknown / int_1d45e6aa
comment
Labtech X from Gaia Online.
 Let X Be the Unknown / int_1d45e6aa
featureApplicability
1.0
 Let X Be the Unknown / int_1d45e6aa
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1.0
 Gaia Online (Website)
hasFeature
Let X Be the Unknown / int_1d45e6aa
 Let X Be the Unknown / int_1faa1967
type
Let X Be the Unknown
 Let X Be the Unknown / int_1faa1967
comment
When a mystery guest commentator shows up during pokecapn's Sonic Unleashed marathon, medibot terms him "X".
 Let X Be the Unknown / int_1faa1967
featureApplicability
1.0
 Let X Be the Unknown / int_1faa1967
featureConfidence
1.0
 pokecapn (Lets Play)
hasFeature
Let X Be the Unknown / int_1faa1967
 Let X Be the Unknown / int_21574300
type
Let X Be the Unknown
 Let X Be the Unknown / int_21574300
comment
Rumble Roses features Lady X (who is later revealed to be Reiko and Fujiko's Missing Mom turned into a cyborg) as the final opponent in each of the various wrestlers' story modes.
 Let X Be the Unknown / int_21574300
featureApplicability
1.0
 Let X Be the Unknown / int_21574300
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1.0
 Rumble Roses (Video Game)
hasFeature
Let X Be the Unknown / int_21574300
 Let X Be the Unknown / int_2221ecbd
type
Let X Be the Unknown
 Let X Be the Unknown / int_2221ecbd
comment
A CSI: NY arc had the team chasing a hitwoman they referred to as "Suspect X"; they only learn her name in the last episode she's in.
 Let X Be the Unknown / int_2221ecbd
featureApplicability
1.0
 Let X Be the Unknown / int_2221ecbd
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1.0
 CSI: NY
hasFeature
Let X Be the Unknown / int_2221ecbd
 Let X Be the Unknown / int_261c8d3f
type
Let X Be the Unknown
 Let X Be the Unknown / int_261c8d3f
comment
The Simpsons: Homer Simpson's online alias is Mr. X.
"So, Mr. X - if that is your real name..."
' Mr X? Do I dare cross the final frontier?'
 Let X Be the Unknown / int_261c8d3f
featureApplicability
1.0
 Let X Be the Unknown / int_261c8d3f
featureConfidence
1.0
 The Simpsons
hasFeature
Let X Be the Unknown / int_261c8d3f
 Let X Be the Unknown / int_2a6eefe5
type
Let X Be the Unknown
 Let X Be the Unknown / int_2a6eefe5
comment
The X Parasites from Metroid Fusion, which are capable of consuming and mimicking any living organism, and can even become horrible mashups of every creature an individual X has previously absorbed.
 Let X Be the Unknown / int_2a6eefe5
featureApplicability
1.0
 Let X Be the Unknown / int_2a6eefe5
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1.0
 Metroid Fusion (Video Game)
hasFeature
Let X Be the Unknown / int_2a6eefe5
 Let X Be the Unknown / int_2a842e3a
type
Let X Be the Unknown
 Let X Be the Unknown / int_2a842e3a
comment
In the introduction to the 50th anniversary reprint of the Doctor Who Expanded Universe novel Prisoner of the Daleks, Trevor Baxendale says that he knew he wanted the Dalek Inquisitor-General to have a name, but until he could work out the right name, he referred to it as "Dalek X". Eventually he realised the right name was obvious: Dalek X.
 Let X Be the Unknown / int_2a842e3a
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1.0
 Let X Be the Unknown / int_2a842e3a
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 Doctor Who – Expanded Universe (Franchise)
hasFeature
Let X Be the Unknown / int_2a842e3a
 Let X Be the Unknown / int_2d311a08
type
Let X Be the Unknown
 Let X Be the Unknown / int_2d311a08
comment
Dimension X from Teenage Mutant Ninja Turtles (1987).
 Let X Be the Unknown / int_2d311a08
featureApplicability
1.0
 Let X Be the Unknown / int_2d311a08
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1.0
 Teenage Mutant Ninja Turtles (1987)
hasFeature
Let X Be the Unknown / int_2d311a08
 Let X Be the Unknown / int_2ef7cb74
type
Let X Be the Unknown
 Let X Be the Unknown / int_2ef7cb74
comment
Ixpellia of the Lyrical Nanoha franchise, also known as the then mysterious "X" that the Mariage was looking for during the case in StrikerS Sound Stage X.
 Let X Be the Unknown / int_2ef7cb74
featureApplicability
1.0
 Let X Be the Unknown / int_2ef7cb74
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1.0
 Lyrical Nanoha (Franchise)
hasFeature
Let X Be the Unknown / int_2ef7cb74
 Let X Be the Unknown / int_36ee2abe
type
Let X Be the Unknown
 Let X Be the Unknown / int_36ee2abe
comment
Paranoia: Vulture Warriors of Dimension X adventure series.
 Let X Be the Unknown / int_36ee2abe
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1.0
 Let X Be the Unknown / int_36ee2abe
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1.0
 Paranoia (Tabletop Game)
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Let X Be the Unknown / int_36ee2abe
 Let X Be the Unknown / int_3defe34c
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Let X Be the Unknown
 Let X Be the Unknown / int_3defe34c
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The χ-blade, with the significance of the letter discussed in Kingdom Hearts: Birth by Sleep. To add to the confusion, it's based on the Greek letter "chi", yet pronounced the exact same way as "key", making it no sound different from "Keyblade." It can get a little awkward when using verbal communication.
 Let X Be the Unknown / int_3defe34c
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1.0
 Let X Be the Unknown / int_3defe34c
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 Discussed Trope
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Let X Be the Unknown / int_3defe34c
 Let X Be the Unknown / int_4dd54482
type
Let X Be the Unknown
 Let X Be the Unknown / int_4dd54482
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Alien X, originally presented as the mysterious tenth alien of Ben 10: Alien Force.
 Let X Be the Unknown / int_4dd54482
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1.0
 Let X Be the Unknown / int_4dd54482
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1.0
 Ben 10: Alien Force
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Let X Be the Unknown / int_4dd54482
 Let X Be the Unknown / int_4f847312
type
Let X Be the Unknown
 Let X Be the Unknown / int_4f847312
comment
Nero Wolfe refers to a few villains as X.
 Let X Be the Unknown / int_4f847312
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1.0
 Let X Be the Unknown / int_4f847312
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1.0
 Nero Wolfe
hasFeature
Let X Be the Unknown / int_4f847312
 Let X Be the Unknown / int_5293b208
type
Let X Be the Unknown
 Let X Be the Unknown / int_5293b208
comment
In Kamen Rider Ex-Aid, the video game theme is represented by each Rider's forms having Character Levels, ranging from 1 (a weak but necessary base form) to 99 (their ultimate forms). The villainous Kamen Rider Genm eventually gained a Survival Horror-inspired Level X form; as he explains to his ally that the X doesn't just mean "ten", but also the unknown. He proves this true by gaining a massive power boost that makes him stronger than even a Level 99 Rider. Unfortunately for him, Ex-Aid ends up getting an upgrade with a Game-Breaker ability, which lets him defeat Genm by removing his ability to transform. (Ex-Aid had also received a "Level XX" form, but that just seems to stand for 20 and isn't shown to have the unknown variable that Genm's does.)
 Let X Be the Unknown / int_5293b208
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1.0
 Let X Be the Unknown / int_5293b208
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 Kamen Rider Ex-Aid
hasFeature
Let X Be the Unknown / int_5293b208
 Let X Be the Unknown / int_5330337b
type
Let X Be the Unknown
 Let X Be the Unknown / int_5330337b
comment
Element X powers Metron's Moebius chair.
 Let X Be the Unknown / int_5330337b
featureApplicability
1.0
 Let X Be the Unknown / int_5330337b
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1.0
 New Gods (Comic Book)
hasFeature
Let X Be the Unknown / int_5330337b
 Let X Be the Unknown / int_5567bde9
type
Let X Be the Unknown
 Let X Be the Unknown / int_5567bde9
comment
Gadget X, the scientists' untested rocket in The Golden Apple.
 Let X Be the Unknown / int_5567bde9
featureApplicability
1.0
 Let X Be the Unknown / int_5567bde9
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1.0
 The Golden Apple (Theatre)
hasFeature
Let X Be the Unknown / int_5567bde9
 Let X Be the Unknown / int_58d20f76
type
Let X Be the Unknown
 Let X Be the Unknown / int_58d20f76
comment
The kaiju film The X From Outer Space. Probably called that because the monster's actual name, Guilala, is silly as hell.
 Let X Be the Unknown / int_58d20f76
featureApplicability
1.0
 Let X Be the Unknown / int_58d20f76
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 The X From Outer Space
hasFeature
Let X Be the Unknown / int_58d20f76
 Let X Be the Unknown / int_5921531b
type
Let X Be the Unknown
 Let X Be the Unknown / int_5921531b
comment
In Persona 4, Chie and Yukiko made a curry-like dish so inedible that there's no way to call it curry. Yosuke dubs it Concoction X or Mystery Food X
 Let X Be the Unknown / int_5921531b
featureApplicability
1.0
 Let X Be the Unknown / int_5921531b
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1.0
 Persona 4 (Video Game)
hasFeature
Let X Be the Unknown / int_5921531b
 Let X Be the Unknown / int_5cb3196f
type
Let X Be the Unknown
 Let X Be the Unknown / int_5cb3196f
comment
In The Diamond Age, the local crime boss can't tolerate how westerners mangle the pronunciation of his name, preferring they just use the first letter of its Pinyin transliteration. Hence, "Dr. X". Eventually even the local judge starts calling him that.
 Let X Be the Unknown / int_5cb3196f
featureApplicability
1.0
 Let X Be the Unknown / int_5cb3196f
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1.0
 The Diamond Age
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Let X Be the Unknown / int_5cb3196f
 Let X Be the Unknown / int_5e3832b5
type
Let X Be the Unknown
 Let X Be the Unknown / int_5e3832b5
comment
Cave Story has Monster X, a Giant Space Flea from Nowhere boss.
 Let X Be the Unknown / int_5e3832b5
featureApplicability
1.0
 Let X Be the Unknown / int_5e3832b5
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1.0
 Cave Story (Video Game)
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Let X Be the Unknown / int_5e3832b5
 Let X Be the Unknown / int_5e91c7b
type
Let X Be the Unknown
 Let X Be the Unknown / int_5e91c7b
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Resident Evil 2 has Mr. X, the name given to the Tyrant that stalks you.
 Let X Be the Unknown / int_5e91c7b
featureApplicability
1.0
 Let X Be the Unknown / int_5e91c7b
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1.0
 Resident Evil 2 (Video Game)
hasFeature
Let X Be the Unknown / int_5e91c7b
 Let X Be the Unknown / int_615d90c6
type
Let X Be the Unknown
 Let X Be the Unknown / int_615d90c6
comment
Racer X from Speed Racer. Played straight with respect to the other characters, but inverted with regard to the audience, since the narrator won't stop reminding you just exactly who he is.
 Let X Be the Unknown / int_615d90c6
featureApplicability
1.0
 Let X Be the Unknown / int_615d90c6
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1.0
 Speed Racer
hasFeature
Let X Be the Unknown / int_615d90c6
 Let X Be the Unknown / int_664b5d51
type
Let X Be the Unknown
 Let X Be the Unknown / int_664b5d51
comment
Star Trek III: The Search for Spock began a tradition in the franchise where experimental starships showcasing either cutting edge ship design or technology were christen with NX rather than the typical NCC. And later rechristened with NCC when it no longer was a prototype design (the Excelsior was NX-2000 when it showed up in The Search for Spock. When it showed up again in Star Trek VI: The Undiscovered Country, in-universe eight years later, the Excelsior was NCC-2000).
 Let X Be the Unknown / int_664b5d51
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1.0
 Let X Be the Unknown / int_664b5d51
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 Star Trek III: The Search for Spock
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Let X Be the Unknown / int_664b5d51
 Let X Be the Unknown / int_68d7b51d
type
Let X Be the Unknown
 Let X Be the Unknown / int_68d7b51d
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On 4chan, /x/ is the board dealing with topics of the paranormal.
 Let X Be the Unknown / int_68d7b51d
featureApplicability
1.0
 Let X Be the Unknown / int_68d7b51d
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1.0
 4chan (Website)
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Let X Be the Unknown / int_68d7b51d
 Let X Be the Unknown / int_691be369
type
Let X Be the Unknown
 Let X Be the Unknown / int_691be369
comment
The X-Files
The title refers to the mysterious files regarding the supernatural that the heroes investigate. It's later revealed that these files are put into the "X" drawer because there's no specific place to put them and it has the most room.
Mulder puts an X on the window to get in touch with his Mysterious Informant with no name or background (credited, appropriately, as Mr. X).
 Let X Be the Unknown / int_691be369
featureApplicability
1.0
 Let X Be the Unknown / int_691be369
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1.0
 The X-Files
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Let X Be the Unknown / int_691be369
 Let X Be the Unknown / int_691c1a3a
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Let X Be the Unknown
 Let X Be the Unknown / int_691c1a3a
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Half-Life: Opposing Force has its "Race X" aliens.
 Let X Be the Unknown / int_691c1a3a
featureApplicability
1.0
 Let X Be the Unknown / int_691c1a3a
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1.0
 Half-Life: Opposing Force (Video Game)
hasFeature
Let X Be the Unknown / int_691c1a3a
 Let X Be the Unknown / int_6952ee85
type
Let X Be the Unknown
 Let X Be the Unknown / int_6952ee85
comment
Element X in AdventureQuest (an MMORPG). Which has now been replaced by the considerably less awesome-sounding Harm and Void elements. The Guardian Dragon still claims to breathe Element X due to a healthy diet of The Powerpuff Girls, though.
 Let X Be the Unknown / int_6952ee85
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1.0
 Let X Be the Unknown / int_6952ee85
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 AdventureQuest (Video Game)
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Let X Be the Unknown / int_6952ee85
 Let X Be the Unknown / int_69daf29
type
Let X Be the Unknown
 Let X Be the Unknown / int_69daf29
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In Grrl Power, a shadowy secret agent introduces himself as "X".
 Let X Be the Unknown / int_69daf29
featureApplicability
1.0
 Let X Be the Unknown / int_69daf29
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1.0
 Grrl Power (Webcomic)
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Let X Be the Unknown / int_69daf29
 Let X Be the Unknown / int_6b3b8320
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Let X Be the Unknown
 Let X Be the Unknown / int_6b3b8320
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Wiseguy: Undercover agent Vinne Terranova is Hauled Before A Senate Subcommittee, but his superior Frank McPike insists that he testify behind a screen with his voice electronically altered, as he doesn't want Vinnie to blow his cover. An annoyed Vinnie goes into the bedroom, then reappears wearing a pillow case with eyeholes cut in it. "Is this how you want me to appear? Agent X?"
 Let X Be the Unknown / int_6b3b8320
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1.0
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 Wiseguy
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Let X Be the Unknown / int_6b3b8320
 Let X Be the Unknown / int_6d564c8
type
Let X Be the Unknown
 Let X Be the Unknown / int_6d564c8
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In Freedom Force, the basis of all power is the mysterious.... Energy X! The Consonant Out Of Space?
 Let X Be the Unknown / int_6d564c8
featureApplicability
1.0
 Let X Be the Unknown / int_6d564c8
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1.0
 Freedom Force (Video Game)
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Let X Be the Unknown / int_6d564c8
 Let X Be the Unknown / int_6d8311c4
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Let X Be the Unknown
 Let X Be the Unknown / int_6d8311c4
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In a similar vein to the anime, prior to the release of the second generation of Pokémon games, Pokémon Gold and Silver, Lugia was referred to as "Pokémon X". A similar, but downplayed, example exists with Shadow Lugia in Pokémon XD, where it is referred to as "XD001".
 Let X Be the Unknown / int_6d8311c4
featureApplicability
1.0
 Let X Be the Unknown / int_6d8311c4
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1.0
 Pokémon Gold and Silver (Video Game)
hasFeature
Let X Be the Unknown / int_6d8311c4
 Let X Be the Unknown / int_6ec3ba16
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Let X Be the Unknown
 Let X Be the Unknown / int_6ec3ba16
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Mutant X, in which "Mutant X" is an underground cell of mutants protecting mutants.
 Let X Be the Unknown / int_6ec3ba16
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1.0
 Let X Be the Unknown / int_6ec3ba16
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Let X Be the Unknown / int_6ec3ba16
 Let X Be the Unknown / int_775cd181
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Let X Be the Unknown
 Let X Be the Unknown / int_775cd181
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Streets of Rage has the main villain, Mr. X.
 Let X Be the Unknown / int_775cd181
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1.0
 Let X Be the Unknown / int_775cd181
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1.0
 Streets of Rage (Video Game)
hasFeature
Let X Be the Unknown / int_775cd181
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Let X Be the Unknown
 Let X Be the Unknown / int_78278517
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Laurie Anderson's "Let X=X."
 Let X Be the Unknown / int_78278517
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1.0
 Let X Be the Unknown / int_78278517
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1.0
 Laurie Anderson (Music)
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Let X Be the Unknown / int_78278517
 Let X Be the Unknown / int_794a6748
type
Let X Be the Unknown
 Let X Be the Unknown / int_794a6748
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The game show What's My Line?, where a panel had to guess the occupations of the contestants, sometimes included contestants whose names were well-known but whose faces weren't, who would be introduced to the panel as "Mr. X". (For example, Jacques Cousteau was Mr. X in one episode.)
 Let X Be the Unknown / int_794a6748
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1.0
 Let X Be the Unknown / int_794a6748
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 What's My Line?
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Let X Be the Unknown / int_794a6748
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Let X Be the Unknown
 Let X Be the Unknown / int_7c4f1adb
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"Project X", an episode of Our Miss Brooks, has Mr. Conklin develop the eponymous secret project as a way of impressing school board president Mr. Stone.
 Let X Be the Unknown / int_7c4f1adb
featureApplicability
1.0
 Let X Be the Unknown / int_7c4f1adb
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 Our Miss Brooks (Radio)
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Let X Be the Unknown / int_7c4f1adb
 Let X Be the Unknown / int_81692f99
type
Let X Be the Unknown
 Let X Be the Unknown / int_81692f99
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In the Star Trek franchise, eXperimental starships are given an "NX" designation until the spaceframe is approved for mass construction and an "NCC" registry.
 Let X Be the Unknown / int_81692f99
featureApplicability
1.0
 Let X Be the Unknown / int_81692f99
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 Star Trek (Franchise)
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Let X Be the Unknown / int_81692f99
 Let X Be the Unknown / int_83d41855
type
Let X Be the Unknown
 Let X Be the Unknown / int_83d41855
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David Xanatos from Gargoyles. (yes, that Xanatos.) Sometimes he's even addressed as "Mr. X."
 Let X Be the Unknown / int_83d41855
featureApplicability
1.0
 Let X Be the Unknown / int_83d41855
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 Gargoyles
hasFeature
Let X Be the Unknown / int_83d41855
 Let X Be the Unknown / int_842c5731
type
Let X Be the Unknown
 Let X Be the Unknown / int_842c5731
comment
Monster X aka Keizer Ghidorah from Godzilla: Final Wars.
 Let X Be the Unknown / int_842c5731
featureApplicability
1.0
 Let X Be the Unknown / int_842c5731
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1.0
 Godzilla: Final Wars
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Let X Be the Unknown / int_842c5731
 Let X Be the Unknown / int_8a6bf3f3
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Let X Be the Unknown
 Let X Be the Unknown / int_8a6bf3f3
comment
Planet X (see below for details) appears in many old sci-fi works. Today, most people recognize it from Duck Dodgers in the 24½th Century, which parodies this by having it as an actual planet with a giant "X" on it, which you can find by following a trail of planets similarly labelled with other letters of the alphabet.
 Let X Be the Unknown / int_8a6bf3f3
featureApplicability
1.0
 Let X Be the Unknown / int_8a6bf3f3
featureConfidence
1.0
 Duck Dodgers in the 24½th Century
hasFeature
Let X Be the Unknown / int_8a6bf3f3
 Let X Be the Unknown / int_8ac4e993
type
Let X Be the Unknown
 Let X Be the Unknown / int_8ac4e993
comment
The Gundam franchise, keeping with Real Life, gives prototype mobile suits model numbers that contain the letter X. More often than not, these machines are Super Prototypes — the biggest example being the original RX-78-2 Gundam.
 Let X Be the Unknown / int_8ac4e993
featureApplicability
1.0
 Let X Be the Unknown / int_8ac4e993
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1.0
 Gundam (Franchise)
hasFeature
Let X Be the Unknown / int_8ac4e993
 Let X Be the Unknown / int_8ba4613a
type
Let X Be the Unknown
 Let X Be the Unknown / int_8ba4613a
comment
In Death Note, Near literally lets X be the unknown, with "L-Kira" being the face of Kira that is pretending to be L, and "X-Kira" being the one who is doing the majority of the actual killings. It's not actually his name, but Near uses it like a name, it still uses X for mystery, and it still sounds cool.
 Let X Be the Unknown / int_8ba4613a
featureApplicability
1.0
 Let X Be the Unknown / int_8ba4613a
featureConfidence
1.0
 Death Note (Manga)
hasFeature
Let X Be the Unknown / int_8ba4613a
 Let X Be the Unknown / int_935a39be
type
Let X Be the Unknown
 Let X Be the Unknown / int_935a39be
comment
The Japanese title of Super Smash Bros. Brawl: Dairant� Smash Brothers X.
 Let X Be the Unknown / int_935a39be
featureApplicability
1.0
 Let X Be the Unknown / int_935a39be
featureConfidence
1.0
 Super Smash Bros. Brawl (Video Game)
hasFeature
Let X Be the Unknown / int_935a39be
 Let X Be the Unknown / int_96ed7c35
type
Let X Be the Unknown
 Let X Be the Unknown / int_96ed7c35
comment
Mister X, one of Wolverine's enemies. And no, no one knows his real name. Yet.
 Let X Be the Unknown / int_96ed7c35
featureApplicability
1.0
 Let X Be the Unknown / int_96ed7c35
featureConfidence
1.0
 Wolverine (Comic Book)
hasFeature
Let X Be the Unknown / int_96ed7c35
 Let X Be the Unknown / int_996d6ce0
type
Let X Be the Unknown
 Let X Be the Unknown / int_996d6ce0
comment
The X's uses this trope.
 Let X Be the Unknown / int_996d6ce0
featureApplicability
1.0
 Let X Be the Unknown / int_996d6ce0
featureConfidence
1.0
 The X's
hasFeature
Let X Be the Unknown / int_996d6ce0
 Let X Be the Unknown / int_9a527531
type
Let X Be the Unknown
 Let X Be the Unknown / int_9a527531
comment
In the Avernum series, one of the archmages who govern magical use is named X. He's far more secretive and secluded than the other two.
 Let X Be the Unknown / int_9a527531
featureApplicability
1.0
 Let X Be the Unknown / int_9a527531
featureConfidence
1.0
 Avernum (Video Game)
hasFeature
Let X Be the Unknown / int_9a527531
 Let X Be the Unknown / int_9dd5f449
type
Let X Be the Unknown
 Let X Be the Unknown / int_9dd5f449
comment
The X-Zone in Sonic Advance, and likewise XX in Sonic Advance 2. Both of them are the final level in their respective games... unless you're playing as Sonic and have all the Chaos Emeralds.
 Let X Be the Unknown / int_9dd5f449
featureApplicability
1.0
 Let X Be the Unknown / int_9dd5f449
featureConfidence
1.0
 SonicAdvance
hasFeature
Let X Be the Unknown / int_9dd5f449
 Let X Be the Unknown / int_9edf7c1d
type
Let X Be the Unknown
 Let X Be the Unknown / int_9edf7c1d
comment
The leader of the X-Men, Professor X. This is even invoked in a What If? story where Magneto, instead of splitting with Xavier, decided to stay on his side and form the X-Men with him. In that case, "X" is short for "Xavier", his actual name. Once, a flashback sequence has Moira MacTaggart point out that naming the team after himself was a bit egotistical. Xavier insists that the connection never occurred to him.
 Let X Be the Unknown / int_9edf7c1d
featureApplicability
1.0
 Let X Be the Unknown / int_9edf7c1d
featureConfidence
1.0
 What If? (Comic Book)
hasFeature
Let X Be the Unknown / int_9edf7c1d
 Let X Be the Unknown / int_9f89a5f0
type
Let X Be the Unknown
 Let X Be the Unknown / int_9f89a5f0
comment
Pokémon
In a similar vein to the anime, prior to the release of the second generation of Pokémon games, Pokémon Gold and Silver, Lugia was referred to as "Pokémon X". A similar, but downplayed, example exists with Shadow Lugia in Pokémon XD, where it is referred to as "XD001".
Prior to its release, Pokémon Crystal, an Updated Re-release of Pokémon Gold and Silver, was known as Pokémon X, which happens to be the title of one of the 6th Generation Pokémon games, Pokémon X.
 Let X Be the Unknown / int_9f89a5f0
featureApplicability
1.0
 Let X Be the Unknown / int_9f89a5f0
featureConfidence
1.0
 Pokémon (Franchise)
hasFeature
Let X Be the Unknown / int_9f89a5f0
 Let X Be the Unknown / int_9fcc8c53
type
Let X Be the Unknown
 Let X Be the Unknown / int_9fcc8c53
comment
The mysterious Mask X character from Punch-Out!! spin-off Arm Wrestling, who turns out to be Bald Bull once unmasked.
 Let X Be the Unknown / int_9fcc8c53
featureApplicability
1.0
 Let X Be the Unknown / int_9fcc8c53
featureConfidence
1.0
 Punch-Out!! (Video Game)
hasFeature
Let X Be the Unknown / int_9fcc8c53
 Let X Be the Unknown / int_a002daa9
type
Let X Be the Unknown
 Let X Be the Unknown / int_a002daa9
comment
X Japan.
 Let X Be the Unknown / int_a002daa9
featureApplicability
1.0
 Let X Be the Unknown / int_a002daa9
featureConfidence
1.0
 X Japan (Music)
hasFeature
Let X Be the Unknown / int_a002daa9
 Let X Be the Unknown / int_a1ea0f34
type
Let X Be the Unknown
 Let X Be the Unknown / int_a1ea0f34
comment
One of the spies in Chitty Chitty Bang Bang goes by the codename of X. His superiors get confused and think they are speaking to Rex or Tex. It doesn't help when the other spy tries to clarify that it's X as in "X and bacon."
 Let X Be the Unknown / int_a1ea0f34
featureApplicability
1.0
 Let X Be the Unknown / int_a1ea0f34
featureConfidence
1.0
 Chitty Chitty Bang Bang
hasFeature
Let X Be the Unknown / int_a1ea0f34
 Let X Be the Unknown / int_a32fb846
type
Let X Be the Unknown
 Let X Be the Unknown / int_a32fb846
comment
In Violenceâ„¢: The Roleplaying Game of Egregious and Repulsive Bloodshed (a dark satire of hack-n-slash RPGs), the author is identified only as "Designer X". Until the end, where the publisher reveals it to be Greg Costikyan.
 Let X Be the Unknown / int_a32fb846
featureApplicability
1.0
 Let X Be the Unknown / int_a32fb846
featureConfidence
1.0
 Violenceâ„¢: The Roleplaying Game of Egregious and Repulsive Bloodshed (Tabletop Game)
hasFeature
Let X Be the Unknown / int_a32fb846
 Let X Be the Unknown / int_a3cf43d8
type
Let X Be the Unknown
 Let X Be the Unknown / int_a3cf43d8
comment
Bum Reviews: Chester A. Bum explains that he doesn't want to spoil the celebrity cameo from Zombieland, and so dubs him Mr. X for a short while.
 Let X Be the Unknown / int_a3cf43d8
featureApplicability
1.0
 Let X Be the Unknown / int_a3cf43d8
featureConfidence
1.0
 Bum Reviews (Web Video)
hasFeature
Let X Be the Unknown / int_a3cf43d8
 Let X Be the Unknown / int_a4514a75
type
Let X Be the Unknown
 Let X Be the Unknown / int_a4514a75
comment
Sector X is Iji is actually a subversion—although it seems mysterious at first, the actual reason it's titled Sector X is because it's the tenth sector, and X is the roman numeral for 10.
 Let X Be the Unknown / int_a4514a75
featureApplicability
1.0
 Let X Be the Unknown / int_a4514a75
featureConfidence
1.0
 Iji (Video Game)
hasFeature
Let X Be the Unknown / int_a4514a75
 Let X Be the Unknown / int_a4ff8e01
type
Let X Be the Unknown
 Let X Be the Unknown / int_a4ff8e01
comment
Fate/Grand Order:
Saber Arturia has alternate versions of herself with strange origins and motives. An Assassin called Mysterious Heroine X, a Berserker called Mysterious Heroine X Alter, a Foreigner called Mysterious Heroine XX, and another Foreigner called Mysterious Idol X Alter.
There is also an Avenger called Mysterious Ranmaru X, a female counterpart of Mori Ranmaru from the same place as the Heroine Xes.
 Let X Be the Unknown / int_a4ff8e01
featureApplicability
1.0
 Let X Be the Unknown / int_a4ff8e01
featureConfidence
1.0
 Fate/Grand Order (Video Game)
hasFeature
Let X Be the Unknown / int_a4ff8e01
 Let X Be the Unknown / int_a5ad0ca9
type
Let X Be the Unknown
 Let X Be the Unknown / int_a5ad0ca9
comment
X Minus One: The "X" in the name carries over from Dimension X, but now implies tension and excitement, the countdown for a rocket launch! Each episode warns of "a million could-be years on a thousand may-be worlds".
 Let X Be the Unknown / int_a5ad0ca9
featureApplicability
1.0
 Let X Be the Unknown / int_a5ad0ca9
featureConfidence
1.0
 X Minus One (Radio)
hasFeature
Let X Be the Unknown / int_a5ad0ca9
 Let X Be the Unknown / int_a66b3bbc
type
Let X Be the Unknown
 Let X Be the Unknown / int_a66b3bbc
comment
DanceDanceRevolution X and X2.
 Let X Be the Unknown / int_a66b3bbc
featureApplicability
1.0
 Let X Be the Unknown / int_a66b3bbc
featureConfidence
1.0
 DanceDanceRevolution (Video Game)
hasFeature
Let X Be the Unknown / int_a66b3bbc
 Let X Be the Unknown / int_a7bb2a13
type
Let X Be the Unknown
 Let X Be the Unknown / int_a7bb2a13
comment
Mega Man ZX has the Guardian airship, located in...Area X.
 Let X Be the Unknown / int_a7bb2a13
featureApplicability
1.0
 Let X Be the Unknown / int_a7bb2a13
featureConfidence
1.0
 Mega Man ZX (Video Game)
hasFeature
Let X Be the Unknown / int_a7bb2a13
 Let X Be the Unknown / int_ae259c31
type
Let X Be the Unknown
 Let X Be the Unknown / int_ae259c31
comment
The Spy Who Loved Me. The codename of Anya Amasova is XXX. However Bond already knows who she is as a top KGB agent, so there's little point in her having a codename except as the obligatory sexually-suggestive Punny Name.
 Let X Be the Unknown / int_ae259c31
featureApplicability
1.0
 Let X Be the Unknown / int_ae259c31
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1.0
 The Spy Who Loved Me
hasFeature
Let X Be the Unknown / int_ae259c31
 Let X Be the Unknown / int_b3db2f86
type
Let X Be the Unknown
 Let X Be the Unknown / int_b3db2f86
comment
Captain America and The Avengers foe Baron Zemo (the original) couldn't remove his hood because of a Freak Lab Accident involving Adhesive-X. Admit it, "X" even makes "I'm angry because this mask is glued to my face" cool.
 Let X Be the Unknown / int_b3db2f86
featureApplicability
1.0
 Let X Be the Unknown / int_b3db2f86
featureConfidence
1.0
 Captain America (Comic Book)
hasFeature
Let X Be the Unknown / int_b3db2f86
 Let X Be the Unknown / int_b69946ad
type
Let X Be the Unknown
 Let X Be the Unknown / int_b69946ad
comment
In Darkness at Noon, Rubashov invokes this, charging the Party has lost touch with the masses, which have become once again "the great silent x of history":
 Let X Be the Unknown / int_b69946ad
featureApplicability
1.0
 Let X Be the Unknown / int_b69946ad
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1.0
 Darkness at Noon
hasFeature
Let X Be the Unknown / int_b69946ad
 Let X Be the Unknown / int_b7151774
type
Let X Be the Unknown
 Let X Be the Unknown / int_b7151774
comment
Mysterious Girlfriend X, with the girlfriend in question being Mikoto Urabe.
 Let X Be the Unknown / int_b7151774
featureApplicability
1.0
 Let X Be the Unknown / int_b7151774
featureConfidence
1.0
 Mysterious Girlfriend X (Manga)
hasFeature
Let X Be the Unknown / int_b7151774
 Let X Be the Unknown / int_b8025197
type
Let X Be the Unknown
 Let X Be the Unknown / int_b8025197
comment
Sonic.exe and its associated works, discarding the X in the file extension name, would eventually reveal the name of the deity capturing the souls of humans to be 'X' as well.
 Let X Be the Unknown / int_b8025197
featureApplicability
1.0
 Let X Be the Unknown / int_b8025197
featureConfidence
1.0
 Sonic.exe (Fanfic)
hasFeature
Let X Be the Unknown / int_b8025197
 Let X Be the Unknown / int_ba169d3c
type
Let X Be the Unknown
 Let X Be the Unknown / int_ba169d3c
comment
Pokémon-X. The title has been hinted as being a reference to a creature or an item.
 Let X Be the Unknown / int_ba169d3c
featureApplicability
1.0
 Let X Be the Unknown / int_ba169d3c
featureConfidence
1.0
 Pokémon-X (Webcomic)
hasFeature
Let X Be the Unknown / int_ba169d3c
 Let X Be the Unknown / int_be122162
type
Let X Be the Unknown
 Let X Be the Unknown / int_be122162
comment
Dierks Bentley's "How Am I Doin'" is credited to a "Writer X", who is actually Jim Beavers.
 Let X Be the Unknown / int_be122162
featureApplicability
1.0
 Let X Be the Unknown / int_be122162
featureConfidence
1.0
 Dierks Bentley (Music)
hasFeature
Let X Be the Unknown / int_be122162
 Let X Be the Unknown / int_c0369f1b
type
Let X Be the Unknown
 Let X Be the Unknown / int_c0369f1b
comment
Chemical X from The Powerpuff Girls, which is a chemical that Professor Utonium accidentally spilled into the formula when creating the Powerpuff Girls. This is a Bowdlerisation, since it was originally a "Can of Whoopass".
Likewise, the effects of the chemical can be reversed with Antidote X.
 Let X Be the Unknown / int_c0369f1b
featureApplicability
1.0
 Let X Be the Unknown / int_c0369f1b
featureConfidence
1.0
 The Powerpuff Girls (Franchise)
hasFeature
Let X Be the Unknown / int_c0369f1b
 Let X Be the Unknown / int_c48af607
type
Let X Be the Unknown
 Let X Be the Unknown / int_c48af607
comment
DC had an Earth X as well before the Crisis; it was the Freedom Fighters' world, where the Axis won World War II. According to Word of God, this is because editorial nixed the idea of calling it Earth-swastika.
 Let X Be the Unknown / int_c48af607
featureApplicability
1.0
 Let X Be the Unknown / int_c48af607
featureConfidence
1.0
 Freedom Fighters (DC Comics) (Comic Book)
hasFeature
Let X Be the Unknown / int_c48af607
 Let X Be the Unknown / int_cf69b21e
type
Let X Be the Unknown
 Let X Be the Unknown / int_cf69b21e
comment
Protoform X (otherwise known as the murderous Rampage) from Beast Wars, the result of a top secret science experiment that turned out to be an uncontrollable monster. After his capture, he was loaded aboard the Axalon alongside other protoforms, under conditions of utmost secrecy, so he could be quietly disposed of somewhere far from home.
 Let X Be the Unknown / int_cf69b21e
featureApplicability
1.0
 Let X Be the Unknown / int_cf69b21e
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1.0
 Beast Wars
hasFeature
Let X Be the Unknown / int_cf69b21e
 Let X Be the Unknown / int_d154285c
type
Let X Be the Unknown
 Let X Be the Unknown / int_d154285c
comment
TNA has the X Division, its official "no limits" division, as opposed to its heavyweight division, which had a minimum weight limit. It's essentially a hardcore division but not in the Garbage Wrestler sense, in that more "high spots" are to be expected sense. Despite having competitors approaching and surpassing 300 lbs, including a celebrated champion in Samoa Joe, a weight limit was eventually put in place for those who wanted to compete in the X division, temporarily turning it into a glorified cruiser weight division until it was lifted.note The weight limit was an attempt to apologize to fans for putting the belt on Abyss, who wasn't a bad wrestler but wasn't what people watched X Division matches for, being neither springy, nor quick, nor very technical.
 Let X Be the Unknown / int_d154285c
featureApplicability
1.0
 Let X Be the Unknown / int_d154285c
featureConfidence
1.0
 Impact Wrestling (Wrestling)
hasFeature
Let X Be the Unknown / int_d154285c
 Let X Be the Unknown / int_d72572ba
type
Let X Be the Unknown
 Let X Be the Unknown / int_d72572ba
comment
In Condemned: Criminal Origins, there's "Serial Killer X," which... really doesn't make sense other than that the letter "X" sounds mysterious.
 Let X Be the Unknown / int_d72572ba
featureApplicability
1.0
 Let X Be the Unknown / int_d72572ba
featureConfidence
1.0
 Condemned: Criminal Origins (Video Game)
hasFeature
Let X Be the Unknown / int_d72572ba
 Let X Be the Unknown / int_d8bda674
type
Let X Be the Unknown
 Let X Be the Unknown / int_d8bda674
comment
X/1999
 Let X Be the Unknown / int_d8bda674
featureApplicability
1.0
 Let X Be the Unknown / int_d8bda674
featureConfidence
1.0
 X/1999 (Manga)
hasFeature
Let X Be the Unknown / int_d8bda674
 Let X Be the Unknown / int_da02c1ef
type
Let X Be the Unknown
 Let X Be the Unknown / int_da02c1ef
comment
The villainous group in Paper Mario: The Thousand-Year Door are known as X-Nauts.
 Let X Be the Unknown / int_da02c1ef
featureApplicability
1.0
 Let X Be the Unknown / int_da02c1ef
featureConfidence
1.0
 Paper Mario: The Thousand-Year Door (Video Game)
hasFeature
Let X Be the Unknown / int_da02c1ef
 Let X Be the Unknown / int_dab32e3
type
Let X Be the Unknown
 Let X Be the Unknown / int_dab32e3
comment
Mega Man X is a Black Box to everyone but his creator and has unknown limitless potential.
 Let X Be the Unknown / int_dab32e3
featureApplicability
1.0
 Let X Be the Unknown / int_dab32e3
featureConfidence
1.0
 Mega Man X (Video Game)
hasFeature
Let X Be the Unknown / int_dab32e3
 Let X Be the Unknown / int_dd3fe595
type
Let X Be the Unknown
 Let X Be the Unknown / int_dd3fe595
comment
"Project X" is a top secret government project in Atlas Shrugged, which turns out to be a horrifying weapon of mass destruction based on certain frequencies of sound wave. The X officially stands for "Xylophone", but they're definitely playing up the mystery angle.
 Let X Be the Unknown / int_dd3fe595
featureApplicability
1.0
 Let X Be the Unknown / int_dd3fe595
featureConfidence
1.0
 Atlas Shrugged
hasFeature
Let X Be the Unknown / int_dd3fe595
 Let X Be the Unknown / int_de8f1f24
type
Let X Be the Unknown
 Let X Be the Unknown / int_de8f1f24
comment
In an example that is literal to the trope title, the Secret Reports of Kingdom Hearts III mention a mysterious girl, implied to be a character from Kingdom Hearts χ, who was used as a test subject in the experiments of Ansem the Wise's apprentices. Suffering amnesia and unable to recall her own name, she was referred to only as "Subject X".
 Let X Be the Unknown / int_de8f1f24
featureApplicability
1.0
 Let X Be the Unknown / int_de8f1f24
featureConfidence
1.0
 Kingdom Hearts III (Video Game)
hasFeature
Let X Be the Unknown / int_de8f1f24
 Let X Be the Unknown / int_e43ea2a3
type
Let X Be the Unknown
 Let X Be the Unknown / int_e43ea2a3
comment
Ultraman X: The titular hero is called as such because of how little the humans know of him.
 Let X Be the Unknown / int_e43ea2a3
featureApplicability
1.0
 Let X Be the Unknown / int_e43ea2a3
featureConfidence
1.0
 Ultraman X
hasFeature
Let X Be the Unknown / int_e43ea2a3
 Let X Be the Unknown / int_e5d5d23c
type
Let X Be the Unknown
 Let X Be the Unknown / int_e5d5d23c
comment
The Doom mod Scythe 2 includes a level named "Mr. X", where the player fights his own Evil Counterpart.
 Let X Be the Unknown / int_e5d5d23c
featureApplicability
1.0
 Let X Be the Unknown / int_e5d5d23c
featureConfidence
1.0
 Doom (Video Game)
hasFeature
Let X Be the Unknown / int_e5d5d23c
 Let X Be the Unknown / int_e5feb1e
type
Let X Be the Unknown
 Let X Be the Unknown / int_e5feb1e
comment
Ace Attorney - Coldkiller X (Coldkiller Z in the original)
 Let X Be the Unknown / int_e5feb1e
featureApplicability
1.0
 Let X Be the Unknown / int_e5feb1e
featureConfidence
1.0
 Ace Attorney (Franchise)
hasFeature
Let X Be the Unknown / int_e5feb1e
 Let X Be the Unknown / int_e93a5ed7
type
Let X Be the Unknown
 Let X Be the Unknown / int_e93a5ed7
comment
Dimension X: The title piggy-backs on the imagination of alternate dimensions, these stories were all about what unknowns are in the future.
 Let X Be the Unknown / int_e93a5ed7
featureApplicability
1.0
 Let X Be the Unknown / int_e93a5ed7
featureConfidence
1.0
 Dimension X (Radio)
hasFeature
Let X Be the Unknown / int_e93a5ed7
 Let X Be the Unknown / int_ebe15b25
type
Let X Be the Unknown
 Let X Be the Unknown / int_ebe15b25
comment
Buck Danny's nemesis is Lady X.
 Let X Be the Unknown / int_ebe15b25
featureApplicability
1.0
 Let X Be the Unknown / int_ebe15b25
featureConfidence
1.0
 Buck Danny / Comicbook
hasFeature
Let X Be the Unknown / int_ebe15b25
 Let X Be the Unknown / int_ec4d141b
type
Let X Be the Unknown
 Let X Be the Unknown / int_ec4d141b
comment
Deathwish Enforcers has the main villain, Big Boss X.
 Let X Be the Unknown / int_ec4d141b
featureApplicability
1.0
 Let X Be the Unknown / int_ec4d141b
featureConfidence
1.0
 Deathwish Enforcers (Video Game)
hasFeature
Let X Be the Unknown / int_ec4d141b
 Let X Be the Unknown / int_edb68237
type
Let X Be the Unknown
 Let X Be the Unknown / int_edb68237
comment
In The Great Escape, the resistance organisation is called the X organisation. Its leader is called Big X. Both justified and Truth in Television: Security, obviously, was an issue, and calling something the 'X' Organization would give no clues to its purpose. Same concept was used in naming the three tunnels Tom, Dick, and Harry.
 Let X Be the Unknown / int_edb68237
featureApplicability
1.0
 Let X Be the Unknown / int_edb68237
featureConfidence
1.0
 The Great Escape
hasFeature
Let X Be the Unknown / int_edb68237
 Let X Be the Unknown / int_ef076a36
type
Let X Be the Unknown
 Let X Be the Unknown / int_ef076a36
comment
Star Trek: Voyager. The holodeck program The Adventures of Captain Proton is an Affectionate Parody of cheesy scifi, so the Supervillain Lair of Mad Scientist Dr. Chaotica is located on "Planet X" as a homage to this trope.
 Let X Be the Unknown / int_ef076a36
featureApplicability
1.0
 Let X Be the Unknown / int_ef076a36
featureConfidence
1.0
 Star Trek: Voyager
hasFeature
Let X Be the Unknown / int_ef076a36
 Let X Be the Unknown / int_ef8bd4a5
type
Let X Be the Unknown
 Let X Be the Unknown / int_ef8bd4a5
comment
Mega Man
Dr. Wily once went by the alias "Mr. X" in Mega Man 6.
Mega Man X is a Black Box to everyone but his creator and has unknown limitless potential.
Mega Man ZX has the Guardian airship, located in...Area X.
 Let X Be the Unknown / int_ef8bd4a5
featureApplicability
1.0
 Let X Be the Unknown / int_ef8bd4a5
featureConfidence
1.0
 Mega Man (Franchise)
hasFeature
Let X Be the Unknown / int_ef8bd4a5
 Let X Be the Unknown / int_f0a86c12
type
Let X Be the Unknown
 Let X Be the Unknown / int_f0a86c12
comment
The name of Ted Mosby's college radio personality alias in How I Met Your Mother is "Doctor X".
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Let X Be the Unknown / int_f0a86c12
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Let X Be the Unknown
 Let X Be the Unknown / int_f4ba2731
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As revealed in Kingdom Hearts 3D [Dream Drop Distance], the letter "X" is known as the Recusant's Sigil, which Xehanort used to mark the Organization's members as his vessels in his massive Grand Theft Me plan. He can even track people who wear it on their clothes, such as Sora's dream-world outfit.
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Let X Be the Unknown
 Let X Be the Unknown / int_f599977e
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Ace Combat 7: Skies Unknown has Mister X, a nickname given to enemy ace Mihaly A. Shilage.
 Let X Be the Unknown / int_f599977e
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 Let X Be the Unknown / int_f599977e
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 Ace Combat 7: Skies Unknown (Video Game)
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Let X Be the Unknown
 Let X Be the Unknown / int_f652eaf8
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The first X in X: The Man with the X-Ray Eyes refers to the protagonist's name (Xavier), but also suggests the previously unknown powers unleashed by Xavier's experiment.
 Let X Be the Unknown / int_f652eaf8
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Let X Be the Unknown
 Let X Be the Unknown / int_f6a54e75
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Kingdom Hearts:
Every member of Organization XIII has a name that is a Significant Anagram of their original name with an "X" added in. Xemnas is a unique exception, as he used the name of a man whose identity he stole (Ansem). Interestingly, the Japanese syllabary has no "X", making their names words that should not be pronounceable.
The χ-blade, with the significance of the letter discussed in Kingdom Hearts: Birth by Sleep. To add to the confusion, it's based on the Greek letter "chi", yet pronounced the exact same way as "key", making it no sound different from "Keyblade." It can get a little awkward when using verbal communication.
As revealed in Kingdom Hearts 3D [Dream Drop Distance], the letter "X" is known as the Recusant's Sigil, which Xehanort used to mark the Organization's members as his vessels in his massive Grand Theft Me plan. He can even track people who wear it on their clothes, such as Sora's dream-world outfit.
In an example that is literal to the trope title, the Secret Reports of Kingdom Hearts III mention a mysterious girl, implied to be a character from Kingdom Hearts χ, who was used as a test subject in the experiments of Ansem the Wise's apprentices. Suffering amnesia and unable to recall her own name, she was referred to only as "Subject X".
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Short-lived wrestling promotion Wrestling Society X, which took place in a secret underground X bunker.
 Let X Be the Unknown / int_f7d34c92
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Let X Be the Unknown
 Let X Be the Unknown / int_f81101f2
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As with the games, before the second generation was fully revealed, the Pokémon anime used the Code Name "Pokémon X" for Lugia. Dr. Namba also refers to Lugia by this name, despite the episode that he debuts in having come out a while after the Generation 2 games were revealed. On a related note, Pokémon Xnote The full title is Pokémon X: 10 Years of Pokémon. is also the name of a CD album that was released to commemorate the 10th anniversary of Pokémon.
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The X-Team from Minilife TV.
 Let X Be the Unknown / int_fa5dc503
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Let X Be the Unknown
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X the Unknown could well have been an alternate Trope Name. In this case X is a radiation-eating Muck Monster from beneath the Earth!
 Let X Be the Unknown / int_fce80d77
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 Let X Be the Unknown / int_fce80d77
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The following is a list of statements referring to the current page from other pages.

 Let X Be the Unknown
processingCategory2
Naming Conventions
 Let X Be the Unknown
processingCategory2
Text Tropes
 Tiger Mask W / int_d99fdd5e
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
 Ash's Just Reward (Fanfic) / int_d99fdd5e
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Let X Be the Unknown
 Chains of Reality (Fanfic) / int_d99fdd5e
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Let X Be the Unknown
 Sonic.exe Remake (Fanfic) / int_d99fdd5e
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Let X Be the Unknown
 The Ed, Edd n Eddy Project (Fanfic) / int_d99fdd5e
type
Let X Be the Unknown
 Chitty Chitty Bang Bang / int_d99fdd5e
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Let X Be the Unknown
 Revenge of the Nerds / int_d99fdd5e
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Let X Be the Unknown
 The Great Escape / int_d99fdd5e
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Let X Be the Unknown
 The Midnight Sky / int_d99fdd5e
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Let X Be the Unknown
 X: The Man with the X-Ray Eyes / int_d99fdd5e
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Let X Be the Unknown
 X the Unknown / int_d99fdd5e
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
 SixFlags
seeAlso
Let X Be the Unknown
 XtremeKoolLetterZ
seeAlso
Let X Be the Unknown
 YouKnowNothingAboutX
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
 I've Got a Secret / int_d99fdd5e
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Let X Be the Unknown
 The X-Files / int_d99fdd5e
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Let X Be the Unknown
 What's My Line? / int_d99fdd5e
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown
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Let X Be the Unknown