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[-[[caption-width-right:350:[[Franchise/StarWars "Strong with the force,]] [[VideoGame/SoulSeries you are. But not]] ''[[VideoGame/SoulSeries that]]'' [[VideoGame/SoulSeries strong."]]]]-]

A Guest Fighter is a character that doesn't belong in the setting who just shows up in a VideoGame, especially a FightingGame, much like a SpecialGuest on a TV show. It seems like if a fighting game hasn't had a full-blown {{Crossover}}, it has at least had a Guest Fighter or two.

Guest Fighters are quite the {{Base Breaker}}s; depending on who you ask, they are either awesome and hilarious because they're [[FishOutOfWater fishes out of water]] bringing all their superpowers and {{continuity nod}}s to the conflict or detracting from the premise of the established fictional universe and/or a cheap cash grab because they're... fishes out of water. That being said, the Guest Fighters ''least'' likely to inflict base breaking are the fishes whose styles and settings are more '''in''' water, such as [[Franchise/TheLegendOfZelda Link]] in ''[[VideoGame/SoulSeries Soulcalibur II]]'' or [[Franchise/ANightmareOnElmStreet Freddy Krueger]] in ''VideoGame/MortalKombat9'', or guests in MassiveMultiplayerCrossover games in which case there is no such thing as a fish out of water. And even then, [[UnpleasableFanbase it's still not a sure bet]].

The trope name comes from the ''VideoGame/SuperSmashBros Brawl'' website, in which the name is used to refer to [[Franchise/MetalGear Solid Snake]] and Franchise/SonicTheHedgehog, the two characters ''outside'' Nintendo's ownership.

In nearly all cases, those characters are {{Unexpected Character}}s, so Guest Fighter can be considered a subtrope of that.

----
!!Examples:
[[foldercontrol]]

[[folder: Fighting Games]]

* ''VideoGame/SuperSmashBros'':
** [[Franchise/MetalGear Solid Snake]] and Franchise/SonicTheHedgehog in ''Super Smash Bros. Brawl''. The latter was highly demanded by fans who wanted to see him in a fighting game with Mario (which was why he was added in the game). Solid Snake is a unique case. Creator/HideoKojima originally asked for Snake to be added to ''Super Smash Bros. Melee''. However, since that game was too far in development, Snake was added in ''Brawl''.
** In the fourth game for Nintendo3DS and WiiU, [[VideoGame/MegaManClassic Mega Man]] and VideoGame/PacMan were added as new guest characters, while Sonic makes a return. Ryu from ''Franchise/StreetFighter'', Cloud from ''Franchise/FinalFantasy'', and VideoGame/{{Bayonetta}} also join them as DownloadableContent characters.
** Some guest characters have brought along friends to help (or hinder) them: [[Franchise/{{SonicTheHedgehog}} Shadow the Hedgehog]], [[Franchise/MetalGear Cyborg Ninja]] (in Brawl only), [[VideoGame/{{MegaManClassic}} Elec Man]] and [[VideoGame/{{PacMan}} The Ghosts]] can be summoned with Assist Trophies, but its random who will pop out.
** In ''Super Smash Bros. for 3DS'', 3rd party enemies also appear in Smash Run. [[VideoGame/Sonic3AndKnuckles Eggrobo,]] and [[VideoGame/{{MegaManClassic}} Mettaur]] represent the Sonic and Mega Man series, but the Pac-Man universe has no representation in this mode. Instead, [[VideoGame/DigDug Pooka]] and [[VideoGame/{{Xevious}} Bacura]] represent Namco's universe.
** ''Smash 4'' also has some tophies of characters who are not owned by Nintendo. The list includes [=CommanderVideo=] from VideoGame/BitTrip, and Rayman, Globox, and Barbara from Franchise/{{Rayman}}.
** Aside from trying to improve on the gameplay, VideoGame/ProjectM was going to add four newcomers, including [[Franchise/{{SonicTheHedgehog}} Knuckles the Echidna]].
** ''Smash 4'' also included DLC costumes based on [[VideoGame/MegaManClassic Protoman,]] [[VideoGame/MegaManX Mega Man X, Zero,]] [[VideoGame/MegaManBattleNetwork Mega Man.EXE,]] [[Franchise/SonicTheHedgehog Tails, Knuckles,]] [[VideoGame/VirtuaFighter Jacky Bryant, Akira Yuki]] [[StylisticSuck (in a blocky, polygonal form)]] [[VideoGame/{{Tekken}} Heihachi,]] [[VideoGame/TalesOfSymphonia Lloyd Irving,]] [[VideoGame/TheTowerOfDruaga Gil]], [[VideoGame/MonsterHunter the Hunter's Blademaster Armor and the Rathalos Blademaster Armor]], [[VideoGame/SuperMarioRPG Geno]], and [[Franchise/FinalFantasy Chocobo.]] In an example of WhatCouldHaveBeen, at least two of those characters ([[http://www.sourcegaming.info/2015/06/26/800/ Heihachi]] and [[http://www.sourcegaming.info/2016/02/21/nintendodream3/ Geno]]) were considered for the game, but for one reason or another, could not be added.
* VideoGame/CartoonNetworkPunchTimeExplosion had [[WesternAnimation/CaptainPlanetAndThePlaneteers Captain Planet]] who was an UnexpectedCharacter to everyone. In the story mode, he made a BigDamnHeroes moment where he saved the other 14 heroes from [[spoiler: The Narrator's Evil Remote Control]]. And he can use all the elements for attacks.
* The earliest known fighting game with a guest fighter would have to be the first ''VideoGame/FightersHistory'' game by Data East, which its final boss is ''Karnov'' from the arcade game of the same name, who also appeared in later titles in the series (and also appeared as an enemy in ''VideoGame/BadDudes'' and ''VideoGame/TrioThePunch''). However, he wasn't playable until the arcade game was ported to the SNES with a cheat code to play as him.
** In ''Fighter's History Dynamite'' (known in Europe as ''Karnov's Revenge''), another guest fighter appears as a BonusBoss, which was the Ox from Data East's 1984 ''Karate Champ''.
** In the Japan-exclusive Super Famicom title in the series, ''Fighter's History: Mizoguchi Kiki Ippatsu!!'', the final boss this time is another guest fighter, Chelnov, from the run 'n' gun arcade game ''Atomic Runner''.
** Makoto Mizoguchi from this series made two appearances as a guest fighter: the first was in ''Suiko Enbu: Fuu'un Saiki'' (with Liu Yungmie), while the second was in ''[[VideoGame/TheKingOfFighters KOF: Maximum Impact Regulation A]]''.
* Although both the ''VideoGame/FatalFury'' and ''VideoGame/ArtOfFighting'' franchises take place in the same universe, Ryo Sakazaki from the ''Art of Fighting'' series appearing in ''Fatal Fury Special'' (an update of ''Fatal Fury 2'') as the secret final boss counts.
** Geese Howard from ''Fatal Fury'' appears as a secret final boss in ''Art of Fighting 2'', though with a different appearance, due to Art of Fighting being placed chronogically before Fatal Fury, thus making the Geese in AOF younger.
** Truly a remarkable example because from one simple guest appearance, the entire ''VideoGame/TheKingOfFighters'' franchise was given birth (which is like "Guest Fighter: The Game", at least in its original design, as not only did characters from ''Fatal Fury'' and ''Art of Fighting'' appear on the roster but so too did non-fighting game characters from games such as ''VideoGame/PsychoSoldier'' and ''VideoGame/IkariWarriors''). ''[=KoF=]'' in itself has had a few guest fighters (particularly in ''XI'' where characters from fighting games like ''[[VideoGame/FuunSeries Savage Reign]]'' and ''Buriki One'' got to join the cast). And while it features characters from multiple universes, ''KOF '94'' can be considered the earliest cross-over fighting game.
** Leaving aside the games that explicitly fold into it, ''The King of Fighters: Maximum Impact 2'' has fun with this trope. [[VideoGame/SamuraiShodown Hanzo Hattori]] and [[VideoGame/MetalSlug Fio]] both show up... and are quite confused (Hanzo wonders what happened to ninjitsu when he meets [[HighlyVisibleNinja Mai]], and Fio mistakes Ralf and Clark for Marco and Tarma, respectively). Its update, Regulation A, also has Mizoguchi, though he's notably the first and only non-SNK character to join the KOF cast.
** Clark and Ralf make appearances in ''VideoGame/MetalSlug6'' and ''7'', as well as one or two of their signature moves. Leona is an add-on character in ''Metal Slug XX'', the PSP re-release of ''Metal Slug 7''. Additionally, ''VideoGame/MetalSlugDefense'' has all 3 of them, plus Kyo, Iori, Benimaru, Goro Daimon, Mature, and Vice, as purchasable units.
** The King of Fighters 2000 has Assist Characters known as strikers to help you out. Some og them are from other SNK games, such as Rocky from Robo Army, Duke Edwards from Burning Fight, and Neo & Geo from Quiz Dai Sousa-sen. (The first two are from Beat 'Em Ups, but Neo & Geo are from, oddly enough, [[UnExpectedCharacter a quiz game.]])
** ''The King of Fighters 14'' will have Mui Mui from the Pachislot game series ''Dragon Gal'' as a playable character. A [[http://shoryuken.com/2016/03/14/king-of-fighters-xivs-entire-cast-leaks-again/ supposed screenshot of the roster]] was leaked and shows Mui Mui and other fighters before they were revealed. She's a member of the "Another World" team, which includes [[VideoGame/SamuraiShodown Nakoruru]] and Love Heart, the protagonist of another pachislot game, ''Sky Love''.
* Manga/{{Gon}} in the console port of ''VideoGame/{{Tekken}} 3''. Almost two decades later, Akuma from ''Franchise/StreetFighter'' crashes ''Tekken 7: Fated Retribution'' on a mission to hunt down Heihachi Mishima.
* The ''VideoGame/{{Soul|Series}}'' series is downright notorious for this:
** [[Franchise/TheLegendOfZelda Link]], [[VideoGame/{{Tekken}} Heihachi]] and ComicBook/{{Spawn}} in ''Soulcalibur II''. The catch is that each of these three are exclusive to a single console ([[UsefulNotes/NintendoGameCube GameCube]], UsefulNotes/PlayStation2 and UsefulNotes/{{Xbox}}, respectively). The HD remake for the Xbox Live Arcade and PSN brings only Heihachi and Spawn back (not Link for obvious reasons), but now both are available across both platforms.
** [[VideoGame/TalesOfSymphonia Lloyd Irving]] in ''Soulcalibur Legends''.
** [[Franchise/StarWars Darth Vader, Yoda]] and "[[VideoGame/TheForceUnleashed The Apprentice]]" in ''Soulcalibur IV''; the latter is effectively an EarlyBirdCameo. The catch for the first two is each of them are playable from the start exclusively on one console (Vader on UsefulNotes/{{PlayStation 3}} and Yoda on UsefulNotes/{{Xbox 360}}) and are paid DownloadableContent on the other, making the pair from a technical point of view the first fighting game DLC characters, predating [[VideoGame/BlazBlue Makoto Nanaya]] by almost two years.
** Kratos in ''Soulcalibur: Broken Destiny''. The eponymous ''VideoGame/GodOfWar'', [[NamesTheSame not the]] ''Tales of Symphonia'' character despite Lloyd's earlier presence.
** [[VideoGame/AssassinsCreedII Ezio Auditore da Firenze]] in ''Soulcalibur V''.
** In ''Soul Calibur III'', It is possible to create [[VideoGame/XenoSaga KOS-MOS]] in the Character Creation by using all of the "Type X" parts.
** Likewise, ''Soul Calibur V'' has a fighting style based on [[VideoGame/{{Tekken}} Devil Jin]]. Tekken's producer, Katsuhito Harada, appears as a bonus character in Quick Battle mode using this style. In the game, he's known under his Website/{{Twitter}} handle [[https://twitter.com/Harada_TEKKEN?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor Harada_TEKKEN]], and wears an outfit resembling Heihachi's gi.
** While not Guest Fighters in the same sense as the others, there are also a number of characters who were created for the series by well known artists. In this sense, they count as well.
*** Necrid was designed by ''ComicBook/{{Spawn}}'' creator Todd [=McFarlane=] for ''Soulcalibur II'', the game which [=McFarlane=] also made a toy line for (the making of which was [[MoneyDearBoy conditional on Necrid's inclusion]]). He was available on all three console versions.
*** Angol Fear was created by ''Manga/KeroroGunsou'' creator Mine Yoshizaki. She is a cousin to Angol Mois from that series and made a one-off appearance in chapter 148 of the manga after her debut, making her a genuine retroactive guest.
*** Ashlotte Maedel was created by Creator/OhGreat.
*** Kamikirimusi was created by ''Anime/MaiHime'' character designer Hirokazu Hisayuki.
*** Scheherazade was created by ''Anime/RahXephon'' creator Yutaka Izubuchi.
*** Shura was created by ''Manga/{{Gantz}}'' creator Hiroya Oku.
** All these guest fighters have background stories and plots that sufficiently explain why they are in the series. However, they are never actually referenced again or even hinted about having existed at any point, and have zero impact within the story. The 5 created characters for ''IV'', including Angol Fear, are an exception as they are actually mentioned as part of the story, with Ashlotte having the strongest connection due to her part in the story for ''V'''s new Astaroth.
*** On another note, Creator/{{Ubisoft}}'s WordOfGod on Ezio's presence [[http://www.eurogamer.net/articles/2011-10-21-ezio-confirmed-for-soulcalibur-5 is that]] it is easily explained through the Animus, the decidedly time-spanning but not universe-spanning FramingDevice of the ''Assassin's Creed'' universe. Though at one point the ''Soulcalibur'' community manager noted the fuzziness of Ezio's timeline during the events of ''Assassin's Creed: Brotherhood'' (the incarnation used in ''V''), suggested that it was actually time/dimensional travel instead of [[spoiler:''Soul Calibur V'' itself being a video game inside the Animus]]. The latter seems to be backed up by Ezio's official profile, which has him retrieving an item from the Templars that seems to briefly transport him to 1607, this leaving erratic readings in the Animus.
** And [[VideoGame/{{Tekken}} Yoshimitsu]] could be considered one, atleast in spirit, given a similar character exists since the first ''Soulcalibur''. While vaguely hinted at first, it was confirmed for ''V'' that this Yoshimitsu is the founder of the group the ''Tekken'' Yoshimitsu forms part of, and the [[LegacyCharacter first in a long line of successors carrying the same name.]]
* Nicole-458, a female Spartan from ''Franchise/{{Halo}}'' who appears in ''VideoGame/DeadOrAlive 4''. It's worth noting that she has never appeared in ''any actual Halo media'', since she was created specifically for [=DOA4=].
** Akira Yuki, Sarah Bryant, and Pai Chan from ''VideoGame/VirtuaFighter'' are playable characters in ''VideoGame/{{Dead or Alive 5}}''. Jacky Bryant joins up as well in ''[[UpdatedRerelease Dead or Alive 5: Ultimate]]'', as do Rachel and Momiji from ''VideoGame/NinjaGaiden''.
** A later update added Naotora Li from ''VideoGame/SamuraiWarriors'' in ''Last Round''
* The Japanese version of ''VideoGame/MarvelSuperHeroesVsStreetFighter'' had [[AscendedFanboy Norimaro]], an original character created by Japanese comedian Noritake Kinashi. He carried around a little satchel full of props as he fought. His super move was to fling every prop in the bag in a giant shotgun-blast of random objects. When he won, he'd pull out a little camera, hold it at arm's length, turn it around, and snap a picture of himself. [[NoExportForYou He was removed from the US version]], although data for him still exists in the game.
** Preceding that, Akuma appeared in ''VideoGame/XMenChildrenOfTheAtom''. After that there was Anita from ''VideoGame/{{Darkstalkers}}'' in ''VideoGame/MarvelSuperHeroes''. Similar to ''The King of Fighters'' example, the use of Capcom-owned characters in their Creator/MarvelComics-licensed fighting games predicated the start of the ''VideoGame/MarvelVsCapcom'' series.
** Akuma also appeared in the console version of ''VideoGame/{{Cyberbots}}'' as a mecha under the name "Zero Akuma". This characters was very likely inspired by Cyber Akuma, the final boss in ''Marvel Super Heroes vs. Street Fighter''.
** [[VideoGame/StreetFighterAlpha Sakura]] also shows up in the first ''VideoGame/RivalSchools'' game.
** The now-discontinued PC mouse game ''Street Fighter Online: Mouse Generation'' had several crossover characters from other licenses, namely Wuxia novels by Jin Yong, ''Manga/{{Cyborg 009}}'', Kiminori Wakasugi from ''Manga/DetroitMetalCity'' and the title character from ''Series/SpaceSheriffGavan''.
* [[VideoGame/MegaManBattleNetwork MegaMan.EXE]] and [[VideoGame/MegaManZero Zero]] are unlockable fighters in ''Franchise/{{Onimusha}} Blade Warriors''.
* K-1 fighter-turned-comedian Bobby Ologun appears as the final boss in the UsefulNotes/PlayStation2 port of ''[[VideoGame/PowerInstinct Power Instinct Matrimelee]]''. He uses much GratuitousEnglish and has a BeamSpam super called "Bobby Beam".
* In ''[[VideoGame/DragonBallZBudokaiTenkaichi Dragon Ball Z Budokai Tenkaichi 3]]'', Arale Norimaki from ''Manga/DoctorSlump'' is an unlockable character. [[JustifiedTrope Justified]] in that Arale ''did'' appear in episodes 55, 56, and 57 of the first ''Manga/DragonBall'' anime series, so when they said they would put ''everyone'' in ''Budokai Tenkaichi 3'', they really meant '''everyone'''.
** And in an example of Guest ''Stage'', Penguin Village is an unlockable stage.
* The Japanese version of ''VideoGame/DragonBallZBudokai 2'' had an alternate costume for Frieza, as his son Kuriza from AkiraToriyama's self-parody manga ''Neko Majin Z''. Neko Majin himself appears as a guest assistant character in the Japanese version of ''Dragon Ball Z: Supersonic Warriors 2'' for the NintendoDS.
* ''VideoGame/NarutoShippudenUltimateNinjaStorm2'' allows you to use Lars Alexandersson from ''VideoGame/{{Tekken}} 6''. Creator/NamcoBandai has the rights to both series and ''Naruto'' author Masashi Kishimoto designed Lars's alternate outfit, so he reappears here with said outfit and redesigned to fit with the art style of the game.
** As an example of a Guest ''Costume'', ''VideoGame/NarutoShippudenUltimateNinjaStorm3'' had [[Franchise/DragonBall Goku's]] outfit as a DLC costume for Naruto. In return, DragonBallZBattleOfZ will have a Sage Naruto costume for Goku.
* Similar to the ''WWE Smackdown: Just Bring It!'' example, Fred Durst was also featured as an unlockable character in [[TheProblemWithLicensedGames the ill-advised fighting game adaptation]] of ''Film/FightClub''.
* Similarly, rocker [[BlackFlag Henry Rollins]] has a sizably role in ''[[VideoGame/DefJamSeries Def Jam: Fight for NY]]'', featuring the eponymous rap label's performers. Actors [[Series/HouseMD Omar Epps]] and Creator/DannyTrejo also make appearances and are playable characters.
* While not a playable character, [[spoiler:VideoGame/DonkeyKong]] is a not-so-secret challenger in the Wii ''VideoGame/PunchOut'' title. He would only appear during the last phase of Career Mode: [[LastStand Mac's Last Stand]]. Win or lose, once you met him, you could fight him any time in Exhibition Mode. But because all opponents at this point are random, you ran the risk of him being LostForever if you lost the Last Stand before fighting him.
** For the [=GameCube=] port of EA's ''Fight Night Round 2'', you can play as Little Mac in his SNES appearance.
* ''VideoGame/Ready2RumbleBoxing: Round 2'' has hidden boxers including basketball star Shaquille O'Neal, [[UsefulNotes/BillClinton Bill]] & [[UsefulNotes/HillaryRodhamClinton Hillary Clinton]], and Music/MichaelJackson.
** Could possibly count Rumbleman, who's basically boxing announcer Michael Buffer hopped up on [[Franchise/{{Batman}} Venom]].
* Three VideoGame/RavingRabbids with different movesets in ''VideoGame/TeenageMutantNinjaTurtlesSmashUp'' (One normal, one in ''VideoGame/SplinterCell'' gear, and one in TMNT getup). This caused an eruption of "ruined" cries among the TMNT fanbase.
** Parodied [[http://www.2pstart.com/2010/01/20/tortoises-and-hares/ here]].
* Ryougi Shiki of ''LightNovel/KaraNoKyoukai'' in ''VideoGame/MeltyBlood''.
** {{Videogame/Melty Blood}}'s Sion Eltnam Atlasia (Renamed "Eltnum") for ''VideoGame/UnderNightInBirth''. She was later joined by Akatsuki from ''VideoGame/AkatsukiBlitzkampf''
* ''[[VideoGame/FateUnlimitedCodes Fate/Unlimited Codes]]'' had a guest appearance by the Lancer from [[LightNovel/FateZero the 4th Grail War]], who is from the same fictional universe but from a different time period than [[VisualNovel/FateStayNight the one covered by the game]].
* VideoGame/EarthwormJim has appeared as a guest fighter in ''ClayFighter 63⅓'' and the PC edition of ''VideoGame/BattleArenaToshinden''. In the former, he has his own moveset and even his own story and stage, but in the latter, he is just a bonus skin for Rungo Iron.
** Boogerman from [[VideoGame/{{Boogerman}} the game of the same name]] also appeared in ''ClayFighter 63⅓'', aptly showing a rivalry of sorts with Jim in the story mode.
* ''Franchise/MortalKombat''
** [[VideoGame/GodOfWarSeries Kratos]] again in the UsefulNotes/PlayStation3 version of ''VideoGame/MortalKombat9''. Given that ''Mortal Kombat'' is set in a multiverse and and has a penchant for gore-tastic fighting, Kratos fits right in.
*** And [[Franchise/ANightmareOnElmStreet Freddy Krueger]] also appears as a {{DLC}} character.
** In ''VideoGame/MortalKombatX'', fellow horror icon [[Franchise/FridayThe13th Jason Voorhees]] appears as a {{DLC}} character. His announcement date was also fitting -- he was announced on a Friday the 13th. A second guest character in the form of ''Franchise/{{Predator}}'' also comes over as DLC.
*** Two more guest fighters join ''Mortal Kombat X'' through its "Kombat Pack 2": Leatherface from ''Franchise/TheTexasChainsawMassacre'' and a Xenomorph[[note]]with Tarkatan DNA, courtesy of Baraka[[/note]] from ''Franchise/{{Alien}}''.
*** Additionally, Jax has a DLC "Carl Weathers" costume based on his appearence as [[Franchise/{{Predator}} Dillon]], the Jerkass teammate of Dutch from '''Predator'''.
* The Japanese UsefulNotes/SegaSaturn version of ''[[VideoGame/FightingVipers Fighting Vipers]]'' had ''PEPSIMAN!'' as a secret playable character. [[NoExportForYou Only in the original Japanese Sega Saturn release, sadly.]].
** Interestingly, the Arcade version has some unused Guest Fighters that were DummiedOut in the final release, that were likely added as a joke and not meant to be in the full game: [[Franchise/SonicTheHedgehog Sonic, Tails]] and Takashi Iizuka (director of Sonic Team). However, they are still playable thanks to emulation hacking. [[http://www.x-cult.org/games/150/Fighting_Vipers/30/Sonic_The_Hedgehog/ Source]] [[http://www.x-cult.org/games/150/Fighting_Vipers/31/Takashi_Iizuka/ links]]. Sonic being there was the result of a bored programmer, and Yuji Naka saw it and loved the idea, thus ''[[VideoGame/SonicTheFighters Sonic the Fighters]]'' was born.
** ''[[VideoGame/SonicTheFighters Sonic the Fighters]]'' originally had Honey the Cat, an original character based on the same character from ''Fighting Vipers''. She was DummiedOut in the original Arcade version of the game and the ''Sonic Gems Collection'' re-release, but she's now avaliable for play in the UsefulNotes/PlayStation3 and Xbox 360 digital re-release.
* ''[[VideoGame/FightersMegamix Fighters Megamix]]'', aside from being ''[[VideoGame/VirtuaFighter Virtua Fighter 2]]'' vs. ''[[VideoGame/FightingVipers Fighting Vipers]]'', also features many weird and out-of-place characters from other Sega AM2 works, who were added clearly JustForFun. Including [[VideoGame/SonicTheFighters Bean the Dynamite, Bark the Polar Bear]], Akira and Sarah (from ''Virtua Fighter Kids''), Siba (a scrapped character from the first ''Virtua Fighter'') [[VideoGame/VirtuaCop Janet]], Rent-A-Hero, [[VideoGame/DaytonaUSA Hornet]] (yep, you can fight as a ''race car''), [[Main/OriginalGeneration Deku, Mr. Meat]] and [[CreatorCameo Palm Tree]] (A 3D version of the palm tree from '' Sega [=AM2=]'s logo!''). Needless to say, as crazy as this game and it's roster was, it was great because it was 100% grade A GuiltyPleasure.
* [[VideoGame/FinalFantasyVII Cloud, Tifa, Yuffie, Vincent, Zack, and Sephiroth]] (the latter two making their first playable appearances) in ''{{Ehrgeiz}}'', plus the final boss's first form looks suspiciously similar to Red XIII. Incidentally, this was the [[JustHereForGodzilla only reason]] most fans bought the game.
* ''VideoGame/StreetFighterXTekken'' on UsefulNotes/PlayStation3 and UsefulNotes/PlayStationVita had '''FIVE''' Guest Fighters.
** Firstly, there's Cole [=MacGrath=] of ''VideoGame/InFamous''. He's then joined on the same platforms by two cats (Toro and Kuro) that are Sony's mascots in Japan. Plus [[VideoGame/MegaManClassic Bad Box Art Mega Man]], and VideoGame/PacMan riding a [[VideoGame/{{Tekken}} Mokujin]] robot. The former three are avaliable from the start of the game, while the later two were released as free DownloadableContent. Needless to say, the five of them are major {{Base Breaker}}s.
** To an extent, Poison counts as this. She was from the VideoGame/FinalFight video game series, and while she did make an appearance with Hugo in ''Street Fighter III'', she wasn't playable. Street Fighter X Tekken is the first time she's playable in a Street Fighter game.
* ''VideoGame/PlayStationAllStarsBattleRoyale'' has several characters that are from third-party games: [[VideoGame/BioShock Big Daddy]] (2K Games), [[VideoGame/{{Tekken}} Heihachi Mishima]] (Namco), [[VideoGame/DmCDevilMayCry Dante]] (Capcom), and [[VideoGame/MetalGearRisingRevengeance Raiden]] (Konami) are in the launch roster, and [[VideoGame/DeadSpace Isaac Clarke]] (EA) is in as DownloadableContent.
* ''Vattroller X'' for the GameBoyAdvance features [[Manga/OnePiece Zoro]], [[Manga/OnmyouTaisenki Kogenta]] and [[Manga/BeetTheVandelBuster Beet]] as [[http://www.youtube.com/watch?v=vs3P5SPIjUQ secret characters]] who are unlocked by passwords available in Japanese cards of the ''Vattroller X'' manga.
* Franchise/SpiderMan was a guest fighter in the Creator/{{Activision}} title ''X-Men: Mutant Academy II.''
* Arm Wrestling (a ''VideoGame/PunchOut'' spinoff) involves this; the third round is against Mask X. But, during the round, pull off the mask and looky here, it's [[spoiler:Bald Bull from ''Punch-Out!!'']] The text also says, "Wow!!! [[spoiler:Bald Bull!!!]]"
* [[VideoGame/FatalFury Terry Bogard]] and [[VideoGame/TheKingOfFighters Benimaru Nikaido]] in ''XuanDouZhiWang''. The fact that ''XD'' [[SincerestFormOfFlattery clearly takes inspiration from]] ''The King of Fighters'' has not been lost on fans, which is probably the reason Creator/{{SNK}} struck a deal with Tencent to put the two in the game in the first place.
* [[VideoGame/MortalKombat Scorpion]] is part of the cast of ''VideoGame/InjusticeGodsAmongUs'' as DLC. A little unusual, sure, but doubles as a MythologyGag towards ''[[VideoGame/MortalKombatVsDCUniverse Mortal Kombat vs. DC Universe]]''.
* ''Manga/{{Baoh}}'''s Ikuro Hashizawa in ''VideoGame/JoJosBizarreAdventureAllStarBattle'', but only technically as ''Baoh'' is another manga by ''Manga/JoJosBizarreAdventure'' creator Creator/HirohikoAraki.
* [[VideoGame/VirtuaFighter Akira Yuki]] again in Creator/{{Sega}} and [[LightNovels Dengeki Bunko]]'s 2D MassivelyMultiplayerCrossover fighting game ''VideoGame/DengekiBunkoFightingClimax'', acting as a boss character. Pai Chan serves as his AssistCharacter.
** The console versions get two more with [[VideoGame/ValkyriaChronicles Selvaria Bles]] and her assist character, Alicia Melchiott.
** On top of that, none of the stages in the game are from any visual novels. Instead, they are from Sega games, such as Sonic the Hedgehog, Phantasy Star Online 2, NiGHTS Into Dreams, and 7th Dragoon.
* ''Videogame/{{Divekick}}'' has Johnny Gat of the ''Videogame/SaintsRow'' series as one of the new characters in the Addition Edition. Shaundi also appears as an assist character in one of Gat's moves. The fencer from ''VideoGame/{{Nidhogg}}'' also arrived in a later update.
* ''VideoGame/AggressorsOfDarkKombat'' has Kotaro Fuuma from ''VideoGame/WorldHeroes'' making a guest appearance.
* Alongside its original cast of characters, indie game ''VideoGame/ProjectG'' featured Zero from ''VideoGame/MegaManX'' two years before ''Marvel Vs. Capcom 3'' did.
* ''VideoGame/KillerInstinct'' (2013) brings in Rash from the ''VideoGame/{{Battletoads}}'' series. He will be a member of the Season 3 cast in 2016 but was released to players for a limited time in an early form in August of 2015. In early 2016, it was announced that the Arbiter from ''Franchise/{{Halo}}'' and General RAAM from ''Videogame/GearsOfWar'' would be joining the cast as well.
* ''VideoGame/NewgroundsRumble'''s second release included Fancy Pants from ''VideoGame/FancyPantsAdventures''. Unlike the other characters in the roster, he's not a Website/{{Newgrounds}} original.
* WesternAnimation/TheGrimAdventuresOfBillyAndMandy video game included General Skarr as a secret character. While he did appear as a minor character in the series down the line, he was originally from Billy and Mandy's sister show, WesternAnimation/EvilConCarne.
* The online game [[http://www.gamezhero.com/games/kungfu2turbo American Dad vs Family Guy]] has [[VideoGame/StreetFighter Ryu]] appear as the final boss.
* [[http://www.cartoonnetwork.com/games/tko/ Cartoon Network's other fighting game, Titanic Kungfubot Offensive]] has some playable characters from shows that did not originate from CN, which includes WesternAnimation/{{JohnnyTest}}, [[WesternAnimation/{{TotalDrama}} Duncan, and Chef Hatchet]].
* Whenever a big crossover fighting game is coming out, you know that someone's gonna make a fake leak. Some of them are [[JustForFun outright jokes]]. [[http://24.media.tumblr.com/tumblr_lfto0bLRQo1qbj63mo1_500.jpg Take this "leak"]] of Wrestling/JohnCena in VideoGame/MarvelVsCapcom3 for example.
* For April Fools Day, ''VideoGame/{{Skullgirls}}'' released a prank saying that Zone-Archive's Zone-Tan [[http://www.eventhubs.com/images/2013/apr/02/skullgirls-new-animator-zone-created-new-character-01/ would be a playable DLC character]]. Zone's... *ahem* "fans" would know that her bio and playstyle have references to Zone-Tan's creation and short appearances, such as [[CreatorCameo having a demon slaying mother, welding a size-changing key as a weapon,]] [[CombatTentacles and, of course, having her pet tentacle monster Lemmy help her out in the fight.]]
* In the PSP rerelease of ''VideoGame/StreetFighterAlpha 3'', VideoGame/CapcomFightingEvolution's Ingrid was a hidden playable character.
* The ''Super Puzzle Fighter'' and ''VideoGame/SuperGemFighter'' featured SuperDeformed versions of Street Fighter and Darkstalkers characters. However, both games had one character that wasn't from either series. Puzzle Fighter had Devilotte from the Giant Mech Fighting Game VideoGame/{{Cyberbots}} appear as a secret character, while Gem fighter had Tessa from VideoGame/RedEarth.
* VideoGame/MischiefMakers' Marina Liteyears made a playable appearence in the Japan Only VideoGame/RakugakiShowtime. She can even use her trademark shaking abilities after picking up a [[LimitBreak Smiley Ball]]
* ''VideoGame/NitroplusBlasterzHeroinesInfiniteDuel'' features [[VisualNovel/FateZero Saber]] in all of its versions while [[VideoGame/SenranKagura Homura]] and [[VideoGame/ArcanaHeart Heart Aino]] are available as DownloadableContent in the console versions.
[[/folder]]

[[folder:Action]]
* ''VideoGame/ZoneOfTheEnders: the 2nd Runner'' features a guest appearance of ''VideoGame/{{Gradius}}'s'' [[CoolStarship Vic Viper]] as a TransformingMecha.
* The promotional sample disk version of Main/NightsIntoDreams, Christmas NiGHTS, had a mode where you could play through Spring Valley as Sonic. Dr. Eggman is also a boss in this veraion of the game, though he's just a reskinned version of the boss Puffy.
* VideoGame/KingdomHearts3DDreamDropDistance had a world based on VideoGame/TheWorldEndsWithYou, making it the first Square-Enix world to not be based on Final Fantasy.
[[/folder]]

[[folder:Action-Adventure]]
* In ''VideoGame/TheCatLady'', you actually get to meet Joe and Ivy from ''VideoGame/{{Downfall}}''. Similar to the Street Fighter-Final Fight example, both Downfall and The Cat Lady share the same universe.
* In the alien invasion game ''Under the Skin'', one of the areas your alien prankster attacks is Raccoon City and your antagonists in that area include Jill Valentine (the Resident Evil 3 version of her).
* ''VideoGame/TheWonderful101'' has [[VideoGame/{{Bayonetta}} Bayonetta, Jeanne, and Rodin]] as hidden playable characters.
* ''VideoGame/RumbleRoses'''s Reiko was[[note]]The past tense is because the servers are shut down[[/note]] a multiplayer skin on ''VideoGame/MetalGearSolid3: [[UpdatedRerelease Subsistence]]''.
[[/folder]]

[[folder: Beat 'Em Up]]
* In an ironic twist, [[Franchise/StreetFighter Ryu]] is a guest fighter for ''VideoGame/AsurasWrath'', but he also comes with a complete change in gameplay from the main game to be like ''VideoGame/StreetFighterIV'', Gauges and Life bars included.
** Akuma and Evil Ryu are also Guest Fighters.
* VideoGame/{{Bayonetta}} is a Guest Fighter in ''VideoGame/AnarchyReigns'' if you preordered the game or bought the DLC.
* In the battle against Creator/MattGroening in VideoGame/TheSimpsonsGame, Groening will summon [[WesternAnimation/{{Futurama}} Zoidberg and Bender]] as mooks. Before that, [[VideoGame/{{TheSimpsons}} The Simpsons Arcade]] had the ComicStrip/LifeInHell bunnies gang up on you in Krustyland if you weren't careful.
* Paul Phoenix and Marshall Law from ''VideoGame/{{Tekken}}'' appear in ''VideoGame/UrbanReign'' as playable characters.
[[/folder]]

[[folder:First/Third Person Shooter]]
* A stylistic reimagining of ''VideoGame/TeamFortress2'''s Pyro was added to the retail version of ''VideoGame/KillingFloor'' for those who had both the game and ''Team Fortress 2'' during the Twisted Christmas event. [[FridgeLogic What a 1960s mercenary is doing in a second millennium Zombie-clone outbreak in London is anyone's guess.]]
** Although the Pyro's history is a complete mystery, to the point where no one even know's [[AmbiguousGender his or her gender]] so [[FridgeBrilliance maybe it makes complete sense that the Pyro'd be there, it's just that we don't know why yet.]]
* Due to being released by Creator/LucasArts, [[Franchise/StarWars Han Solo]] and Franchise/IndianaJones skins are available to any character (even the girl) in the first ''VideoGame/{{Mercenaries}}'' game.
* ''VideoGame/UnrealChampionship2TheLiandriConflict'' has [[Franchise/MortalKombat Raiden]] as a playable character and Shao Kahn as an announcer.
** Scorpion, Sub-Zero and Noob Saibot are also playable in the arcade shooter ''The Grid''.
* Scorpion’s definitely Mortal Kombat’s version of [[WolverinePublicity Wolverine]]- he’s playable in ''VideoGame/PsiOpsTheMindgateConspiracy''.
* In an act of cross-promotion, ''Film/JohnWick'' became a playable character for ''VideoGame/{{Payday 2}}'' during [=CrimeFest=] 2014. Another cross-promotion, this time for ''VideoGame/HotlineMiami2WrongNumber'' Deluxe Edition, made the protagonist of Hotline Miami, known only as Jacket, available for Deluxe Edition owners. In December 2015, Bodhi, the leader of the Ex-Presidents bank robbers from ''Film/PointBreak1991'', was released for free alongside the Point Break DLC, which also includes two film-inspired heists.
* [[Franchise/{{Halloween}} Michael Myers]] and Film/{{Predator}} are special items known as Field Orders in VideoGame/CallOfDutyGhosts. They can only be played as in the Fog and Ruins maps, respectively.
* ''VideoGame/CannonSpike'' is a game that had more Guests than original characters. [[Franchise/StreetFighter Cammy, Charlie,]] [[Characters/{{Darkstalkers}} Baby Bonnie Hood,]] [[VideoGame/MegaManClassic Mega Man]] and [[VideoGame/GhostsNGoblins Arthur]] basically band together with some OriginalGeneration characters and shoot shit up.
[[/folder]]

[[folder:Dating Sim]]
* While they're not technically fighters due to the game being a DatingSim, ''VideoGame/NamcoHigh'' includes three characters from ''Webcomic/{{Homestuck}}'' (Jane Crocker, Terezi Pyrope, and Davesprite) due to the author being a major part of the development. All three are referred to as "weird exchange students" in the character info.
[[/folder]]

[[folder:Hack and Slash]]
* ''VideoGame/WarriorsOrochi 3'' has five guest fighters: [[BladestormTheHundredYearsWar Joan of Arc]], [[VideoGame/WarriorsLegendsOfTroy Achilles]], [[VideoGame/TrinitySoulsOfZillOll Nemea]], [[VideoGame/NinjaGaiden Ryu Hayabusa]], and [[VideoGame/DeadOrAlive Ayane]]. The [[UpdatedRerelease Ultimate]] version introduces [[Videogame/NinjaGaiden Rachel, Momiji]], [[Videogame/DeadOrAlive Kasumi]], [[Videogame/SoulSeries Sophitia]] and [[VideoGame/AtelierRoronaTheAlchemistOfArland Sterkenburg Cranach]].
* VideoGame/{{Bayonetta2}} has special costumes that replace the original sound effects.
** The [[Franchise/SuperMarioBros Mushroom Kingdom Princess]] and [[VideoGame/SuperMarioLand Sarasaland Princess]] costumes replace Halos with Gold Coin, and Bayonetta can summon Bowser instead of Madama Butterfly to attack when using Wicked Weaves. She'll even have a cute Mario or Luigi plush doll attached to her hip. Bayonetta can also use the Chain Chomp as a weapon, while donning a Mario Costume.
** The [[Franchise/TheLegendOfZelda Hero of Hyrule]] costume replaces Halos with Rupees and the sounds effects with SFX from VideoGame/TheLegendOfZeldaALinkToThePast, Hideki Kamiya's favorite Legend of Zelda game. The [[CoolSword Shuraba]] will be replaced with the Master Sword, and can allow her to damage flaming enemies without taking damage. The Hylian Shield on her wrist will also allow her to parry attacks.
** The [[Franchise/{{Metroid}} Galactic Bounty Hunter]] costume will have Bayonetta use the Arm Cannon for gun attacks. When she uses Panther Within, she uses Samus's Morph Ball mode, and double jumping makes her use the ScrewAttack.
** Finally, the [[VideoGame/StarFox Star Mercenary]] gives off VideoGame/StarFox64 sound effects, and replaces Love is Blue with mini Arwings that shoot lasers. If you wear this costume in Chapter 16: Sovereign Power, you'll control and Arwing instead of a jet, and can fire Smart Bombs.
** If Jeanne wears these costumes, her sound effects will be from the game's first entries: VideoGame/TheLegendOfZeldaI, [[VideoGame/{{Metroid1}} Metroid]], and [[VideoGame/StarFox1 Star Fox]]. [[/folder]]

[[folder:Minigame Game]]
* ''[[VideoGame/WarioWare WarioWare: Do It Yourself!]]'' used to have microgames based on ''VideoGame/{{Shantae}}'', ''VideoGame/WorldOfGoo'', ''VideoGame/SuperMeatBoy'', ''VideoGame/BitTrip'', ''VideoGame/SwimIkachan'', ''VideoGame/MaxAndTheMagicMarker'', ''VideoGame/TokiTori'', ''VideoGame/JettRocket'', ''VideoGame/AndYetItMoves'', and ''VideoGame/ChronosTwin'' that could be downloaded through Nintendo Wi-Fi Connection, but they are now unobtainable thanks to the servers being shut down.
[[/folder]]

[[folder:MMORPG]]
* The Cartoon Network MMORPG VideoGame/{{FusionFall}} has representation from almost every major Cartoon Network show from the 90s until 2009. [[MyFriendsAndZoidberg There's also]] appearances from Johnny Test and Dukey from WesternAnimation/JohnnyTest, which was a Canadian show created for Teletoon, Agent K9 from the movie [[Film/CatsAndDogs Cats and Dogs: Revenge of Kitty Galore]][[note]]Simply put, it was ProductPlacement[[/note]], and TOM, the host of Creator/{{Toonami}}, which was canceled at the time.
** Costumes based on WesternAnimation/LegendOfTheGuardiansTheOwlsOfGaHoole were featured when the movie was released.
* VideoGame/LostSaga Has a boatload of guest characters: Ragna, Jin/[[PaletteSwap Noel]], Rachael, Hakumen, Platinum, and Hazama from VideoGame/{{BlazBlue}}, Sol and May/[[PaletteSwap Johnny]] from VideoGame/GuiltyGear, Hoahmaru, Nakoruru, and Galford from VideoGame/SamuraiShodown, and Kyo, Iori, and [[VideoGame/FatalFury Mai]] from VideoGame/TheKingOfFighters. The can only be bought win in-game currency, and typically have stronger equipment.
[[/folder]]

[[folder:Platformer]]
* ''[[VideoGame/MegaManClassic Mega Man Universe]]'' [[DevelopmentHell would had have]] [[Franchise/StreetFighter Ryu]] as one of the playable characters. [[VideoGame/GhostsNGoblins Arthur]] also shows up in the cinematic teaser trailer.
* VideoGame/LegoAdaptationGame
** Franchise/IndianaJones can be unlocked in ''VideoGame/LEGOStarWars: The Complete Saga''. Likewise, [[Franchise/StarWars Han Solo]] is unlockable in ''VideoGame/LEGOIndianaJones'' (both cases doubling as an ActorAllusion).
** Creator/AdamWest, Creator/KevinSmith and [[WesternAnimation/DuckDodgers Green Loontern]] are unlockable characters in ''VideoGame/LEGOBatman 3'', with Adam West doubling as the "In Peril" character for the game and the narrator of the bonus mission.
* [[Franchise/DevilMayCry Dante]] pops up as an unlockable player character in the [=PS2=] version of ''VideoGame/ViewtifulJoe''.
* The Baz from ''WebVideo/TwoBestFriendsPlay'' appears as a fighter in ''VideoGame/{{Divekick}}'' and an optional boss in ''VideoGame/ShovelKnight''. The UsefulNotes/PlayStation4 and UsefulNotes/XboxOne versions of the game features [[VideoGame/GodOfWarSeries Kratos]] and the ''VideoGame/{{Battletoads}}'' as bosses.
* Franchise/DonkeyKong and [[Franchise/SuperMarioBros Bowser]] are playable in the Wii U version of ''[[VideoGame/{{Skylanders}} Skylanders: SuperChargers]]'' and the Wii and Nintendo 3DS-exclusive spin-off ''Skylanders: [=SuperChargers=] Racing''. Their figures function as Skylander figures in the games and can also double as Toys/{{amiibo}}.
* [[VideoGame/SuperMeatBoy Meat Boy]] is a recurring character in the ''VideoGame/BitTrip'' series, appearing as a background character in ''RUNNER,'' ''[=Runner2=]'', and ''FLUX'', and as a powerup in ''FATE.''
** The "Good Friends" DLC pack for ''[=Runner2=]'' adds [[VideoGame/SuperMeatBoy Dr. Fetus,]] [[VideoGame/{{Machinarium}} Josef,]] [[VideoGame/CaveStory Quote,]] [[VideoGame/{{Psychonauts}} Raz,]] and [[VideoGame/{{Spelunky}} Spelunky Guy]] as playable characters. The Steam version includes [[VideoGame/{{Portal 2}} ATLAS]] as well.
* Nearly every character with an Toy/{{amiibo}} figure is playable in ''VideoGame/SuperMarioMaker'' as a Mystery Mushroom costume. This means the entire vanilla roster of ''[[VideoGame/SuperSmashBros Super Smash Bros. for 3DS and Wii U]]''[[note]]the only featured Smash characters not from the base game are [[Franchise/{{Pokemon}} Mewtwo]] and [[VideoGame/{{Mother3}} Lucas]][[/note]], the squid kids and a squid from ''VideoGame/{{Splatoon}}'', ''VideoGame/ChibiRobo'', and almost every major NPC from the ''VideoGame/AnimalCrossing'' series. Additionally, [[VideoGame/{{Swapnote}} Nikki]], [[VideoGame/StarFox Slippy, Peppy,]] an [[VideoGame/StarFoxZero Arwing]], [[VideoGame/BigBrainAcademy Dr. Lobe,]] [[VideoGame/TheLegendOfZeldaMajorasMask Tingle]], the [[VideoGame/WiiFit Wii Balance Board]] from ''Wii Fit'', [[VideoGame/WarioWare Ashley]], and [[VideoGame/TheLegendOfZeldaTriForceHeroes Totem Link]] are unlockable costumes despite not having amiibo.
** [[Series/RetroGameMaster Shinya Arino]] is also a Mystery Mushroom costume, unlocked by clearing a course made by him.
** Necky, the mascot of the Japanese website [[http://www.famitsu.com/ Famitsu]] and a GLA Mercedes Benz are unlocked by completing the "Yoshi is Awesome" and the "Mercedes-Benz Jump'n'Drive" events.
* Creator/{{Toonami}}'s TOM made an appearance in ''VideoGame/Sly2BandOfThieves'', basically acting like a reskinned Alarm Clock.
* One of the playable characters in ''VideoGame/TheAngryVideoGameNerdAdventures'' is the Bullshit Man, the star of a different webshow made by James Rolfe called [[WebVideo/YouKnowWhatsBullshit You Know What's Bullshit?]]
* VideoGame/TheyBleedPixels' bonus worlds are based on ''Seraph'', ''exp. magazine'', and VideoGame/SissysMagicalPonycornAdventure. They were actually made by the original creators themselves.
* The Franchise/{{Kirby}} series' reoccurring bosses Lololo & Lalala were actually [[VideoGame/AdventuresOfLolo stars of their own series]] before they fought against the pink puffball.
* VideoGame/Runbow has ''18'' playable characters from other franchises: VideoGame/ShovelKnight, [[VideoGame/SteamWorldDig Rusty]], [[https://www.youtube.com/watch?v=YEuUgJpFi9Y Swift from Sportsball]], [[VideoGame/{{Guacamelee}} Juan, Tostada,]] [[https://www.youtube.com/watch?v=ts9MN0FbEls Scram Kitty]], [[VideoGame/BitTrip CommanderVideo, Commandergirl Video,]] [[https://www.youtube.com/watch?v=Mzeo8AAd5tg Xeodrifter]] [[VideoGame/MutantMudds Max]], [[https://www.youtube.com/watch?v=ICq0rgCdAag Princess from Chariot]], [[VideoGame/HyperLightDrifter Drifter]], [[VideoGame/{{Teslagrad}} Teslamancer]], [[VideoGame/TheFall A.R.I.D.]], [[VideoGame/AzureStrikerGunvolt Gunvolt]], [[UnexpectedCharacter and even]] [[http://tvtropes.org/pmwiki/pmwiki.php/UsefulNotes/Unity Unity-Chan!]] A DLC later added [[https://www.youtube.com/watch?v=4A1wOTP3Eu8 Lilac]] from VideoGame/FreedomPlanet as a playable character.
[[/folder]]

[[folder:Puzzle Game]]
* In the Wii U [[VideoGame/{{Scribblenauts}} Scribblenauts Unlimited]] you could summon characters and items from the Mario and Zelda series. They have their own voices and have special reactions to certain items. (For example, if you summon a go-kart, Toad will run towards it and hop on!)
** Because the Original Scribblenauts was published by Konami in Japan, you could summon [[Franchise/MetalGear Old Snake, Solid Snake, Big Boss,]] [[Franchise/{{Castlevania}} Alucard,]] [[VideoGame/GanbareGoemon Goemon, Ebisumaru,]] [[VideoGame/{{Gradius}} Vic Viper]] and [[VideoGame/LovePlus Manaka Takane]]... [[NoExportForYou so long as you own a Japanese copy]].
** [[https://www.youtube.com/watch?v=QH2-TGUlwu4 Nyan Cat]] and [[https://www.youtube.com/watch?v=J---aiyznGQ Keyboard Cat]] were also characters you could summon in ''Unlimited''. However, Warner Bros was sued because both cats' use were unauthorized. [[http://nymag.com/daily/intelligencer/2013/09/keyboard-cat-nyan-cat-win-warner-bros-lawsuit.html The lawsuit was later worked out. Nyan Cat and Keyboard Cat will make future appearances in the series, but the creators will be paid.]]
[[/folder]]

[[folder:Racing Game]]
* ''[[VideoGame/SegaSuperstars Sonic & Sega All-Stars Racing]] [[MyFriendsAndZoidberg with]] VideoGame/BanjoKazooie'' for the {{Xbox 360}}. The other versions of the game are merely ''Sonic & Sega All-Stars Racing''; [[http://seganerds.thekartel.com/blog/2010/02/22/exclusive_qa_with_sonic_and_sega_all-star_racings_producers Mario was considered for the Wii version]], but [[WhatCouldHaveBeen alas]] existed the [[VideoGame/MarioAndSonicAtTheOlympicGames Olympic Games]], uhhh, games...
** The sequel has Danica Patrick, a real-life UsefulNotes/{{NASCAR}} and ex-[=IndyCar=] driver, and Ralph from Disney's ''Disney/WreckItRalph'', along with [[http://www.tssznews.com/2012/11/14/first-image-of-tf2-character-in-asr-transformed-uncovered/ members of the RED team]] from ''VideoGame/TeamFortress2'' exclusive to the Steam version of the game. Other Steam-exclusive characters include a VideoGame/FootballManager, General Winter from ''VideoGame/CompanyOfHeroes 2'', Willemus from ''VideoGame/TotalWarRomeII'', and [[LetsPlay/SimonLane one of the members of]] the LetsPlay/{{Yogscast}} (the last one is DLC, released for charity).
** Miis and Xbox Live Avatars have been playable in the Sonic and All Stars racing games since the start.
* ''VideoGame/TestDrive 5'' for the [=PlayStation=] had the Music/FearFactory (one of the bands who supplied the music) wagon.
* VideoGame/{{Klonoa}} in ''Moto GP''.
** Similarly (again), the arcade ''VideoGame/MarioKart'' games (by Creator/{{Namco|Bandai}}) have Pac-Man, Ms. Pac-Man, Blinky, Mametchi (a Tamagotchi), and Don (from ''VideoGame/TaikoDrumMaster''); this is notable for being the first crossover between the Namco and Bandai halves of the merged Creator/NamcoBandai.
** Meanwhile, ''Mario Kart DS'' offered R.O.B., and beginning in ''Wii'' you can play as your Mii. DLC for ''[[VideoGame/MarioKart8 8]]'' adds more crossover characters; Link of ''Franchise/TheLegendOfZelda'' fame and the Villager and Isabelle from ''VideoGame/AnimalCrossing''.
** The Blue Falcon from ''VideoGame/FZero'' made its Mario Kart debut in ''Mario Kart Wii'', and was a DLC kart in ''Mario Kart 8''.
** The Mii is a secret character in Mario Kart Wii, 7, and 8. Wuhu Loop and Maka Wuhu from Wii Sports Resort are also tracks in the game
** A [[CoolCar Mercedes-Benz GLA]] was actually DLC in [=MK8=], making it the first time a real car is in the Mario Kart series.
** Mario Kart 8's DLC stages include [[VideoGame/FZero Mute City, Big Blue]], VideoGame/AnimalCrossing, [[Videogame/TheLegendOfZeldaOcarinaOfTime Hyrule Circuit]], and [[VideoGame/{{Excite}} Excitebike Arena]], each with little references to their original series.
*** And in turn, the ''Mario Kart'' clone ''Pac-Man World Rally'' (published, not developed, by Namco) has [[KatamariDamacy the Prince of All Cosmos]], [[VideoGame/DigDug a Pooka and a Fygar]]; the PSP version also has the exclusive characters of VideoGame/{{Mappy}} and MrDriller.
* In the ''VideoGame/{{Excite}}'' series, Boulder from ''Excite Truck'' was a guest racer in ''Excitebots''.
* The fan-favorite Hornet car re-appears in ''VideoGame/DaytonaUSA 2'', alongside ''USA 2'''s new cars. It's identical to the way it preformed in the first game: same build, same speed, same ''camera angles'', and it can pull off [[ObviousRulePatch 4-1-4 shifting]]!
** Hornet is also available as DLC for the [=PlayStation=] Vita version of ''VideoGame/RidgeRacer'', '94 blocky look and all.
* The Virtua Formula in the UsefulNotes/SegaGenesis port of ''VideoGame/{{OutRun}}ners'', only accessible through a code [[GameBreaker but is the fastest and grippiest of all the selectable cars in the game.]]
* ''VideoGame/MarioKart''[='s=] notoriously difficult Rainbow Road race track makes an appearance in ''VideoGame/FZero X''.
* ''VideoGame/ChocoboRacing'' had Ava Brae from ''VideoGame/ParasiteEve'' and Jack from ''VideoGame/The3DBattlesOfWorldRunner'' appear as secret characters.
* ''VideoGame/DiddyKongRacing''[='s=] case is actually a subversion. Its the first time [[VideoGame/BanjoKazooie Banjo]] or [[VideoGame/ConkersBadFurDay Conker]] made an appearance in a video game. [[note]]DKR was released in 1997, Banjo-Kazooie was released in 1998, and Conker's Pocket Tales was released in 1999.[[/note]] However they were later owned by Rare, who was bought by Microsoft. Banjo and Conker did not appear in the UpdatedRerelease Diddy Kong Racing DS. On the other hand, [[VideoGame/BanjoKazooie Tiptup]] did. He also made his first appearance in Diddy Kong Racing, but became a minor character in the ''Banjo'' series. His status as a minor character is probably the reason he stayed in the roster.
* Atari Karts' entire roster is original- except Bentley Bear who was from ''VideoGame/CrystalCastles''.
* ''Power Drift'' has hidden bonus tracks in which the player controls guest vehicles from Creator/{{Sega}}'s previous deluxe arcade racers: the ''VideoGame/HangOn'' bike and the ''VideoGame/AfterBurner'' jet.
* The ''Sonic the Hedgehog'' spinoff series VideoGame/SonicRiders had guest characters in the first two games. NiGHTS was in both games, along with Ulala and Aiai in ''Riders'' and Amigo and Billy Hatcher in ''Zero Gravity''.
[[/folder]]

[[folder:Rhythm Game]]
* In a Rhythm Game example example: the song "Just [[Franchise/SuperMarioBros Mario]]", by "Creator/{{Ubisoft}} meets Creator/{{Nintendo}}", in the Wii version of ''VideoGame/JustDance 3''. The in-game dancer is even dressed in a Mario costume.
** ''VideoGame/JustDance 2015'' has ''Let It Go'' from ''{{Disney/Frozen}}'' and ''VideoGame/{{Tetris}}'' appear as songs. ''Let It Go'' has Elsa and Anna appear as the dancers, while the Tetris dancers are dressed up as Tetrominos. ("Tetris Blocks")
* Music/{{Vocaloid}} GUMI appears in ''VideoGame/PopnMusic'' as an opponent character in the songs that she sings, but unlike 99% of other characters, she is [[NonPlayerCharacter not playable]].
* VideoGame/Persona4DancingAllNight had [[Music/{{Vocaloid}} Hatsune Miku]]. Project Diva was developed by Dingo who assisted in Dancing All Nights development.
[[/folder]]

[[folder:Role Playing Game]]
* A rare MassiveMultiplayerCrossover version: ''VideoGame/SuperRobotWarsAlpha 3'' (by Banpresto) featured Temjin, Fei-Yen the Knight, and Apharmd the Hatter, three mechs from Sega's ''VideoGame/VirtualOn'' series.
** ''VideoGame/SuperRobotWarsK'' has brought them back again, this time incorporating the ''VideoGame/VirtualOn'' storyline into the game. Which essentially makes them {{canon immigrant}}s.
* ''VideoGame/RondoOfSwords'' features Izuna and Shino from ''VideoGame/IzunaLegendOfTheUnemployedNinja'' and Cotton from ''VideoGame/FantasticNightDreamsCotton'' as hidden characters. They are [[GameBreaker ridiculously broken]].
* While not unique characters, Haseo and Ovan have costumes in ''[[Franchise/DotHack .hack Link]]'' belonging to characters from ''VideoGame/TalesOfGraces''. They are the only characters in the game to do so.
* WhatCouldHaveBeen example: the developers of the Wii port of ''VideoGame/MarvelUltimateAlliance'' considered putting [[Franchise/TheLegendOfZelda Link]] and [[Franchise/{{Metroid}} Samus]] [[http://www.youtube.com/watch?v=uwElEsHkk_A as]] [[http://www.youtube.com/watch?v=opkOtApoqqI characters]].
* Dante of ''VideoGame/DevilMayCry'' fame appears as a boss in ''VideoGame/ShinMegamiTenseiIIINocturne''. And with a little effort, he can be added to your party's ranks.
* [[VideoGame/FinalFantasyVII Cloud]] is a secret character in ''VideoGame/FinalFantasyTactics''. Aerith makes a cameo appearance, but isn't playable. The PSP version adds [[VideoGame/FinalFantasyXII Balthier]] and [[VideoGame/FinalFantasyTacticsA2 Luso]], who are technically from the same universe as ''Tactics'', but from a different time period.
* ''VideoGame/CodeNameSteam'' lets you play as characters from ''Franchise/FireEmblem'' if you scan their respective amiibo on the 3DS's touch screen.
* Lightning from ''VideoGame/FinalFantasyXIII'' had made an appearance in ''VideoGame/FinalFantasyXIV'' through random events and she would help players fight ''Final Fantasy XIII'' themed monsters. Completing the event would earn players gear and hairstyles based on Lightning's game.
* ''[[VideoGame/ProjectXZone Project X Zone 2]]'', being a MassiveMultiplayerCrossover of Capcom, Namco Bandai, and Sega franchises, has a couple guest characters from Nintendo: Fiora from ''VideoGame/XenobladeChronicles'' and Chrom and Lucina from ''VideoGame/FireEmblemAwakening''.
** [[VideoGame/XenobladeChronicles MetalFace]] appears as a boss and Risen are enemies.
* In ''VideoGame/DigimonWorldReDigitize'', you can battle against Lili and Sebastian from ''VideoGame/{{Tekken}}''. Her Digimon is a slug-like Numemon named Catherine, who's [[http://wikimon.net/Catherine_(Re:Digitize) evolution line]] is a total Ugly Duckling story. It transforms from a slug, to a literal ''piece of crap'', to a giant teddy bear, until it finally evolves into [[HornyDevils Lilithmon]]. Sebastian on the other hand has a [[HolyHandGrenade Seraphimon]], who frequently butts heads with Catherine when she's fully evolved. And then there's the fact that you can fight Lili when she's in a pink Monzaemon costume...
* ''VideoGame/{{Indivisible}}'' includes appearances from Creator/LabZeroGames[='s=] own Annie from the ''VideoGame/{{Skullgirls}}'' universe as well as VideoGame/{{Shantae}}, VideoGame/ShovelKnight, Red from ''VideoGame/{{Guacamelee}}'', and others.
* One of [[FiveNightsAtFreddysWorld FNAF World]]'s secret bosses is none other than [[spoiler: "Chipper's Revenge", an evil robot version of the protagonist of Scott Cawthon's ''VideoGame/ChipperAndSonsLumberCo'' series. These kid-friendly games were heavily criticized, and that criticism influenced Cawthon to create ''Five Nights at Freddy's''. Chipper's lines after defeating him references this.]]
** [[spoiler: '''Chipper's Revenge''': ''"My world was lush and beautiful, full of strange and colorful creatures! But no, that wasn't enough for you. You wanted to be scared. You wanted to feel dread. And what happened to me? What happened to us? Obscurity..."'']]
[[/folder]]

[[folder:Sandbox]]
* VideoGame/RetroCityRampage features [[VideoGame/BitTrip CommanderVideo]], VideoGame/MeatBoy, and [[VideoGame/{{Minecraft}} Minecraft's Steve]] as secret characters.
[[/folder]]

[[folder:Shoot 'Em Up]]
* ''VideoGame/ArmedPoliceBatrider'' has guest appearances from what the AttractMode calls "Raizing All-Stars"--five ''VideoGame/MahouDaisakusen'' charactes and two ''VideoGame/BattleGaregga'' characters (each with two ships to their name).
* ''VideoGame/{{Gunbird}} 2'' featured [[VideoGame/SengokuAce Aine]] and [[VideoGame/{{Darkstalkers}} Morrigan]] as hidden characters (the latter being only in the UsefulNotes/SegaDreamcast version, which was published by Creator/{{Capcom}}).
* In ''VideoGame/BlueWishResurrection Plus'', Eden's Edge[[spoiler:/Eve]] is available for play. In the creator, X.X's next game, ''Eden's Aegis'', [[spoiler:Eve and Ridmie]] from ''Eden's Edge'' and ''Green Wind'' respectively are available for play if certain conditions are met.
* Paul Phoenix and Heihachi Mishima of ''VideoGame/{{Tekken}}'' in ''[=Xevious 3D/G=]'', of all things.
[[/folder]]

[[folder:Sports Games]]
* ''[[VideoGame/TrackAndField New International Track & Field]]'' is a sports game for the UsefulNotes/NintendoDS. The characters are big-headed and SuperDeformed, and overall it has a kiddie aesthetic. It was also published by Creator/{{Konami}}, who thought it a good idea to put a bunch of their characters in it. These vary from the fitting, such as the mascot of their ''Pro Baseball'' series with similar styling, to the somewhat out there but not terrible weird, like [[Franchise/{{Castlevania}} Simon Belmont]] and [[VideoGame/RocketKnightAdventures Sparkster]], to completely family-'''un'''friendly characters like [[Franchise/SilentHill Pyramid Head]] and [[VideoGame/RumbleRoses Evil Rose]].
* The Gamecube version of ''NBA Street 3'' has [[SuperMarioBros Mario, Luigi and Peach]] as playable characters to make up for the console's lack of online play. Plus, all versions of the game have the BeastieBoys as a secret team.
** ''SSX On Tour'' also had the trio (Cube only, obviously.)
** ''SSX 3'' also had Stretch, one of the characters from ''NBA Street'', as a secret character, as well as all the characters from the previous games.
*** And in that same game, the secret character Churchill debuted as a ''VideoGame/QuakeIIIArena'' '''custom skin'''. Yes, it's true!
*** Stretch's inclusion in ''SSX 3'' mirrors SSX riders Zoe and Moby's status as unlockable characters in the original ''NBA Street'', along with Tracey from ''Sled Storm''. Also in that game? R&B group 3LW.
*** Also Zoe and Psymon were playable in Sled Storm.
* Also notorious for this: the ''[[TonyHawkProSkater Tony Hawk's]]'' series had some weird [[http://en.wikipedia.org/wiki/Tony_Hawk%27s#Guest_characters guest skaters]]. Some are from Activision's game catalog (the ''VideoGame/{{Doom}}'' guy, ''VideoGame/GuitarHero'' characters), others licensed by the company (Franchise/SpiderMan, ComicBook/{{Wolverine}}, WesternAnimation/{{Shrek}}), and musicians as well ([[Music/GreenDay Billie Joe Armstrong]], [[Music/{{Blink 182}} Travis Barker]], [[Music/BeastieBoys MCA]]). The rest are there just for fun, fictional ([[Film/ThePhantomMenace Darth Maul and Jango Fett]]; [[Music/IronMaiden Eddie]]; {{Bigfoot|SasquatchAndYeti}}) or not (Creator/BenjaminFranklin?!).
** Tony Hawk's Pro Skater 5 featured the Teenage Mutant Ninja Turtles from the [[ComicBook/TeenageMutantNinjaTurtlesIDW IDW comic series]] and [[Music/{{OFWGKTA}} Tyler, the Creator]] as DLC characters
* Similarly, ''Mario Hoops 3-on-3'' featured a White Mage, Black Mage, Ninja, Moogle, and Cactuar from ''Franchise/FinalFantasy'', due to Creator/SquareEnix being the developer. ''VideoGame/MarioSportsMix'' featured the same guest characters, plus Slime from ''Franchise/DragonQuest'', and added Behemoth as a boss.
* ''VideoGame/NBAJam'' featured anyone and everyone from the designers to President UsefulNotes/BillClinton as hidden characters.
** Of particular note is that the NBA ''asked'' Midway to ''remove'' Raiden, Scorpion, Sub-Zero and Reptile of ''MortalKombat'' fame from later revisions of ''NBA Jam Tournament Edition'' because they were not at ease with ''MK'' being RatedMForMoney. You read that right.
** Then again, a notable guest in ElectronicArts' installment is Isaac Clarke from ''Franchise/DeadSpace''. Apparently, either NBA has issues with characters from fighting games and yet has no problem featuring a character who gets graphically chopped up by necromorphs or the times have changed on the subject of video game violence since the ''Mortal Kombat'' controversy.
** They seemed to change their minds on this early, as Raiden and Shinnok are playable in ''NFL Blitz''. Scorpion and Sub-Zero also made appearnces in ‘’MLB Sluggers’’, but that was made by a different company.
* ''Virtua Striker 3'' and ''2002'' has a [[SonicTheHedgehog Sonic]] team consisting of the hedgehog and his friends. Yuji Naka is also an announcer and coach of Sonic’s team.
* ''[[VideoGame/NHLHockey NHL 12]]'' features an All-Legend Team, made up of NHL greats like Wayne Gretzky, Mario Lemieux, Gordie Howe, Ray Bourque, among others. You can even put them on your favourite teams, presenting interesting situations all around.
* [[Franchise/JakAndDaxter Jak, Daxter]], [[Franchise/RatchetAndClank Ratchet, Clank]], [[VideoGame/GodOfWar Kratos]], [[VideoGame/LittleBigPlanet Sackboy]], [[VideoGame/GravityRush Kat]], and Toro have all made appearances in some of the later ''VideoGames/HotShotsGolf'' games.
** [[VideoGame/TwistedMetal Needles "Sweet Tooth" Kane]], [[VideoGame/MediEvil Sir Daniel Fortesque]], and VideoGame/{{Gex}} appear as unlockable characters in the American and European releases of ''Hot Shots Golf 2''.
** In ''Hot Shots Tennis: Get a Grip'', you can play as one of the Helghast from ''VideoGame/{{Killzone}}'' (and recruit another as an umpire), but you have to [[DefeatMeansPlayable beat them first]].
* The WesternAnimation/SurfsUp video game had Elliot from WesternAnimation/OpenSeason as a secret character.
* Of the 20 newcomers [[MarioAndSonicAtTheOlympicGames Mario & Sonic at the Rio 2016 Olympic Games]] introduced, Sticks the Badger is one not to originate from a video game. She came from the Sonic Boom cartoon. She's even from a different continuity from the other Sonic characters.
[[/folder]]

[[folder:Stealth-Based Game]]
* Among the original students that wander the school in ''VideoGame/YandereSimulator'', there's Pippi, the mascot of the rhythm game ''{{VideoGame/Osu}}''. She even plays ''osu!'' in the game! However, just because she's from another series doesn't mean she's immune to the wrath of the school's local {{Yandere}}...
[[/folder]]

[[folder: Strategy Game]]
* One mission in ''VideoGame/{{Warcraft}} III'' is infamous for having a [[VideoGame/{{Starcraft}} Hydralisk]] you can add to your forces. The character models for Terran Marines and Zerglings are also available.
* Interestingly, VideoGame/PlagueInc, a game about killing humanity with diseases, got its first official Guest Fighter in the form of the Simian Flu from ''Film/DawnOfThePlanetOfTheApes'', which was a result of a partnership with 20th Century Fox.
[[/folder]]

[[folder:Survival Horror]]
* A few Franchise/ResidentEvil titles have a habit of including playable characters in their minigames that are not involved in the main story.
** The Extreme Battle mode in ''VideoGame/ResidentEvil2'' features [[VideoGame/ResidentEvil Chris Redfield]].
** The Mercenaries mode in ''VideoGame/ResidentEvil4'' features [[VideoGame/ResidentEvil2 Hunk]].
** Mercenaries Return in ''VideoGame/ResidentEvil5'' features [[VideoGame/ResidentEvil Barry Burton and Rebecca Chambers]].
* An update to ''VideoGame/ZombieArmyTrilogy'' added the 8 characters from ''VideoGame/Left4Dead'' and ''Left 4 Dead 2'' as playable characters. This was relatively simple to do, as ''Zombie Army'' does not have voice acting, so all they had to do was get the license rights then plug the character models into their engine.
[[/folder]]

[[folder: Wrestling Games]]
* LimpBizkit frontman Fred Durst is a playable character in ''[[Wrestling/{{WWE}} WWF]] Smackdown: Just Bring It!'' Rumor has it, this was one of the conditions for allowing the developers to use the song "Rollin'", which was Undertaker's entrance theme at the time, in the game.
** The more recent Wrestling/{{WWE}} games feature hidden "legends"; in other words, popular wrestlers from WWE's past.
** ''WWE [=SmackDown=] vs. Raw 2011'' also features Wrestling/RobVanDam, who hadn't been in WWE for a couple of years prior to the game beginning development and, indeed, signed with Wrestling/{{TNA}} shortly after its release. He's listed as a "Free Agent", not as a Legend (the only other characters so designated are the Red and Green demonstration models, Paul Bearer, and the Undertaker's druid). Apparently, the dev team were just really big RVD fans and wanted to use him in the game very badly.
** ''WWE '12'' featured the returns of Wrestling/BrockLesnar and Wrestling/EddieGuerrero.
** ''WWE '13'' featured Mike Tyson.
** ''WWE 2K15'' features Wrestling/{{Sting}}, the first wrestler to be featured in the game despite never actually having wrestled for WWE.
** ''WWE 2K16'' features not one, but ''two'' versions of [[{{Franchise/Terminator}} the Terminator]].
[[/folder]]

[[folder: Vehicular Combat]]
* ''VideoGame/TwistedMetal''
** Music/RobZombie shows up as a driver in ''Twisted Metal 4''.
** A Warhawk from the [[VideoGame/{{Warhawk}} the game of the same name]] is the FinalBoss in ''Twisted Metal: Black''. Serves also as a CallBack, as the original ''Warhawk'' was developed by the same team that did the first two ''Twisted Metal'' games and ''Black''.
* While not "characters" per se, ''VideoGame/RocketLeague'' features a few "guest cars: first is the PS4-exclusive Sweet Tooth from ''Twisted Metal'', and DLC later added the [=DeLorean=] from ''Franchise/BackToTheFuture''. And with the announcement of an Xbox One version, a variation of the Warthog from ''Franchise/{{Halo}}'' and the Armadillo from ''VideoGame/GearsOfWar'' join the roster.
* Beyond Games' ''Motor Mayhem'' included three characters from ''Ultra Vortek'', a mediocre Mortal Kombat clone: Volcana, Grok, and Buzzsaw
[[/folder]]

[[folder:Non Video-Game Examples]]
* In a non-Video Game example, one episode of WesternAnimation/CelebrityDeathmatch had WesternAnimation/BeavisAndButthead fight against each other. While both shows were on MTV, Celebrity Deathmatch focused on parodies of real celebrities fighting to the death, not animated cartoon characters, making their match rather unexpected.
* Hayden Moss is known for competing in Series/BigBrother, but he also competed in [[Series/{{Survivor}} Survivor: Blood vs Water]]. He got in because his then girlfriend was a former Survivor contestant, and former Survivors competing against loved ones was the main gimmick of the season.
** Fellow contestant Gervase Peterson references this in one of his voting confessionals.
-->'''This isn't Big Brother, it's Survivor. We do things different here.'''
** In a related example, Big Brother 17 contestants Jackie Ibarra and Jeff Weldon first appeared in Series/TheAmazingRace.
** Big Brother 15 contestant Caleb Reynolds appears as a contestant on Survivor's 32nd season.
* [[ComicBook/UsagiYojimbo Miyamoto Usagi]] is known for his frequent appearances in Teenage Mutant Ninja Turtles media. His appearance in the 1987 cartoon (In which he was actually called "Usagi Yojimbo") was a set up for his own cartoon that was never made due to CreativeDifferences. He's more accurately portrayed in the 2003 cartoon. His world is the setting for a few episodes, characters like Tomoe and Gen appear, and Usagi is [[HeteroSexualLifePartners as close as a brother to Leonardo.]]
[[/folder]]
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