A variant of XtremeKoolLetterz, seen used in both work titles and in names.

The letter X [[LetXBeTheUnknown is already fascinating]] [[XMakesAnythingCool and cool]], so double the X, double the awesomeness! Right? Much like XtremeKoolLetterz, it's often meant to evoke {{badass}}ery, or lend the show an air of youthful [[TotallyRadical hipness and coolness]].

How exxactly are you supposed to pronounce this [[NoPronunciationGuide is usually unclear]].
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!!Exxamples:

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[[folder: Advertising ]]

* Advertising/TheMostInterestingManInTheWorld doesn't always drink beer, but when he does, he prefers Dos Equis ([[labelnote:XX]]from Spanish, literally, 'two X'[[/labelnote]]). Stay thirsty, my friends.

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[[folder: Anime ]]

* ''Anime/AfterWarGundamX'' has, of course, the MidSeasonUpgrade MS, the "Gundam Double X". However, this is [[JustifiedTrope justified]] in that it was designed to possess double the firepower of the Gundam X, as well as two [[WaveMotionGun Sattelite Cannons]], essentially making it twice the Gundam the X was. It's also played with in that despite its pronunciation, "XX" appears ''nowhere'' in its name or designation.
* However, the designations of the Gundams in ''Anime/MobileSuitGundamWing'' play this straight, with all of their alphanumerics beginning with "XXXG".

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[[folder: Card Games ]]

* ''TabletopGame/{{Fluxx}}''

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[[folder: Comic Books ]]

* ''TheMaxx''
* MarvelComics' Roxxon Energy Corporation, a BrandX of Exxon (see RealLife section).
* ''XXXenophile''

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[[folder: Film ]]

* The German movie ''Film/DerWixxer''.
* Foxxy Cleopatra from ''Film/AustinPowers in Goldmember''.
* ''Traxx''

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[[folder: Literature ]]

* The Taxxons from ''Literature/{{Animorphs}}''.
* When Max Barry wrote the book ''Syrup'', he authored it under a byline of "Maxx Barry". When he wrote JenniferGovernment, he considered making it 3 Xs before settling back on 1.
* The Franchise/StarWarsExpandedUniverse gives us a character with the alias [[LeetLingo Teh Roxxor]].

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[[folder: Live Action TV ]]

* The spaceship {{Lexx}}, from a series of the same name.
* German game show ''[=GoXX=]''.
* The German show ''Reläxx''.
* The main character (and host) of ''DoubleTheFist'', Steve Foxx.
* In one episode of ''Series/HowIMetYourMother'', a fake magazine (featuring women bodybuilders) called ''Muscle Sexxy'' is mentioned.

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[[folder: Music ]]

* Music/{{Scooter}}'s lead vocalist H.P. Baxxter, whose real name is actually Hans Peter Geerdes. H.P. first started using the surname Baxxter back in the 80s when he was part of the synthpop group Celebrate The Nun, and it was no-doubt chosen because of gothic coolness associated with the double x.
* Music/{{Underworld}}'s Born Slippy (N.U.X.X.)
* Music/TheyMightBeGiants' "S~E~X~X~Y", which is always pronounced as the 5 letters. Not explained, except "because it's extra, baby".
* The xx named themselves after this, although they were originally X until they realised there were other bands with that name (their album cover was kept the same).
* There are numerous bootleg compilations called Ultra Rare Traxx or Trax. Calling them 'Traxx' was a way of disguising the fact that they weren't always songs.

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[[folder: Video Games ]]

* ''Tower Bloxx''
* ''VideoGame/{{Zaxxon}}''
* ''[[http://hol.abime.net/4313 Exxon]]''
* ''Hexxagon''
* ''Boxxle,'' a ''VideoGame/{{Sokoban}}'' game on the original GameBoy.
* ''VideoGame/{{Vexx}}'', a PlatformGame.
* ''[[RumbleRoses Rumble Roses XX]]''. If there ever were a third game, [[FranchiseKiller which there probably won't]], perhaps it would have been called '''XXX'''.
* ''Akumajō Dracula XX'', the Japanese title of the SNES game ''VideoGame/CastlevaniaDraculaX''.
* ''Ataxx''
* The villains in the [[SimulationGame flight simulator]] ''Epic'' are the alien race Rexxon.
* Naxxramas, a raid dungeon in ''VideoGame/WorldOfWarcraft''.
* ''Cardiaxx'', a sci-fi style shoot 'em up for the Amiga.
* The X-Nauts in ''VideoGame/PaperMarioTheThousandYearDoor'' have a computer named Tec-XX. This is a StealthPun, actually: [[spoiler:"[[HeelFaceTurn double cross]]".]]
* Some of the songs in the Max series in ''VideoGame/DanceDanceRevolution'' add a second X for good measure, like "MAXX UNLIMITED" and "Fascination MAXX". The course with all the Max songs is called "MAX of MAXX"

[[/folder]]

[[folder: Web Original ]]

* "Boxxy", an author of memetic Website/YouTube videos.
* Website/KomixxyPl

[[/folder]]

[[folder: Western Animation ]]

* Haxx, a character from ''WesternAnimation/ExtremeDinosaurs''.
* Foxxy Love on ''WesternAnimation/DrawnTogether''.

[[/folder]]

[[folder: Real Life ]]

* The company [[http://en.wikipedia.org/wiki/Blaxxun Blaxxun]] (originally spelled "Black Sun").
* Exxon Mobil Corporation.
* Minolta Maxxum cameras (now Sony Alpha).
* Redd Foxx (real name: John Elroy [[Series/SanfordAndSon Sanford]])
* As a tribute to Redd Foxx, actor/comedian/singer Jamie Foxx (real name Eric Marlon Bishop)
* XXX-rated movies. This is really just a marketing gimmick, implying "X" is dirty. (Even if a lot of legitimate films were rated X.) And that "XXX" is [[RuleOfThree three times]] dirtier.
* Exxos, a short-lived ScienceFictionVideoGames publishing label of ERE Informatique, a French video game company of the 1980s.
* The new FXX Network, which is of course a spinoff of FX Networks.
* The video game company Epyx had a label named "Maxx Out!"
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