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[[quoteright:300:[[VideoGame/SoulSeries http://static.tvtropes.org/pmwiki/pub/images/Soul_Calibur_IV_cover_7316.jpg]]]]
[-[[caption-width-right:300:Introducing [[SetSwordsToStun Guest Physics]] and [[Franchise/StarWars some other guys]].]]-]

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 ]]


* As stated above, [[Franchise/MetalGear Solid Snake]] and Franchise/SonicTheHedgehog in ''VideoGame/SuperSmashBros 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 Smash 4, Franchise/MegaMan was added as a new guest character, while Sonic makes a return.
* 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.
* One of the earliest (if not the earliest) fighting game with a guest fighter would have to be the first ''VideoGame/FightersHistory'' arcade 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. 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 an "Extra" boss, which was the Ox from Data East's 1984 ''Karate Champ'' arcade.
** In the Japan-exclusive Super Famicom-only title in the series, ''Fighter's History: Mizoguchi Kiki Ippatsu!!'', the final boss this time is another guest fighter, which is Karnov's cousin, Chelnov, from the run 'n' gun arcade game ''Atomic Runner Chelnov''.
*** Makoto Mizoguchi from this series made two appearances as a guest fighter: the first was in ''Suiko Enbu: Fuuun Saiki'' (with Liu Yungmie), while the second was in ''[[VideoGame/TheKingOfFighters KOF]]: Maximum Impact Regulation A'' (for promoting the cell phone game ''Garou Densetsu vs. Fighter's History Dynamite'').
* 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.
** 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 for Marco).
** Coincidentally, 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''.
* Manga/{{Gon}} in ''VideoGame/{{Tekken}} 3''.
* 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 ([[NintendoGameCube GameCube]], {{PlayStation 2}} and {{Xbox}}, respectively).
** [[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 {{PlayStation 3}} and Yoda on {{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''.
** While not Guest Fighters in the same sense as the others listed above, 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/{{Mai-HiME}}'' 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, the female Spartan based on the ''Franchise/{{Halo}}'' games who appears in ''VideoGame/DeadOrAlive 4''.
** 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''.
* 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''.
** 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''.
* Paul Phoenix and Marshall Law from ''VideoGame/{{Tekken}}'' appear in ''Urban Reign''. Paul also appears alongside Heihachi in ''[=Xevious 3D/G=]'', a {{shmup}} of all things.
* K-1 fighter-turned-comedian Bobby Ologun appears as the final boss in the PlayStation 2 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.
* ''NarutoShippudenUltimateNinjaStorm2'' allows you to use Lars Alexandersson from ''VideoGame/{{Tekken}} 6''. 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'', NarutoShippudenUltimateNinjaStorm3 had [[Franchise/DragonBall Goku's]] outfit as a DLC costume for Naruto. In return, DragonBallZBattleOfZ will have a Sage Naruto costume for Goku.
* 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.
** Durst was also featured as an unlockable character in [[TheProblemWithLicensedGames the ill-advised fighting game adaptation]] of ''VideoGame/FightClub''.
** 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 Rob Van Dam, who hadn't been in WWE for a couple of years prior to the game beginning development and, indeed, signed with {{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 BrockLesnar and EddieGuerrero.
** ''WWE '13'' featured Mike Tyson.
* Similarly, rocker [[BlackFlag Henry Rollins]] has a sizably role in ''[[DefJamSeries Def Jam: Fight for NY]]'', featuring the eponymous rap label's performers. Actors 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.
* The hidden boxers in ''[=Ready2Rumble=] 2'', including basketball star Shaquille O'Neal, [[BillClinton Bill]] & [[HillaryRodhamClinton Hillary Clinton]], and 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 ''TeenageMutantNinjaTurtlesSmashUp'' (One normal, one in ''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 ''Literature/KaraNoKyoukai'' in ''MeltyBlood''.
** {{Videogame/Melty Blood}}'s Sion Eltnam Atlasia (Renamed "Eltnum") for UnderNightInBirth. She was later joined by Akatsuki from ''VideoGame/AkatsukiBlitzkampf''
* ''[[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'', aplty showing a rivalry of sorts with Jim in the story mode.
* [[VideoGame/GodOfWar Kratos]] again in the PlayStation 3 version of ''VideoGame/MortalKombat9''. Given that ''MortalKombat'' 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.
* The Japanese 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'' (likely intended as a MythologyGag, as seen above). 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 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]], [[Main/OriginalGeneration Deku, Mr. Meat and Palm Tree]]. 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 PlayStation 3 and 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/MegaMan Bad Box Art Mega Man]], and {{Pac-Man}} 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.
* ''VideoGame/PlayStationAllStarsBattleRoyale'' has several characters that are from third-party games: [[Franchise/BioShock Big Daddy]], [[VideoGame/{{Tekken}} Heihachi Mishima]], [[VideoGame/DmCDevilMayCry Dante]], and [[VideoGame/MetalGearRisingRevengeance Raiden]] are in the launch roster, and [[VideoGame/DeadSpace Isaac Clarke]] is in as DownloadableContent.
* ''Vattroller X'' for the GameBoyAdvance features [[Manga/OnePiece Zoro]], [[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.''
* [[PunchOut Arm Wrestling]] 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 HirohikoAraki.
* [[VideoGame/VirtuaFighter Akira Yuki]] again in Sega and Dengeki Bunko's 2D MassivelyMultiplayerCrossover fighting game ''Dengeki Bunko Fighting Climax'', acting as a boss character. Pai Chan serves as his AssistCharacter.
* ''Videogame/{{Divekick}}'' has Johnny Gat of the ''Videogame/SaintsRow'' series as one of the new characters in the Addition Edition.

[[/folder]]

[[folder: Other Games ]]

* 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]].
** Izuna and Shino are also in ''VideoGame/WindyXWindam''.
* While not unique characters, Haseo and Ovan have costumes in ''[[Franchise/DotHack .hack Link]]'' belonging to characters from ''VideoGame/TalesOfGraces''. They are the only charcters in the game to do so.
* 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.]]
* ''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/MegaMan 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.
* 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]].
* 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.
* ''[[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 {{NASCAR}} 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
* ''[[VideoGame/TrackAndField New International Track & Field]]'' is a sports game for the NintendoDS. The characters are big-headed and SuperDeformed, and overall it has a kiddie aesthetic. It was also published by {{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 a Pro Baseball series with similar styling, to the somewhat out there but not terrible weird, like [[Franchise/{{Castlevania}} Simon Belmont]] and [[RocketKnightAdventures Sparkster]], to completely family-'''un'''friendly characters like [[Franchise/SilentHill Pyramid Head]] and [[RumbleRoses Evil Rose]].
* Due to being released by LucasArts, [[StarWars Han Solo]] and IndianaJones skins are available to any character (even the girl) in the first ''{{Mercenaries}}'' game.
* ''Gunbird 2'' featured [[SengokuAce Aine]] and [[VideoGame/DarkStalkers Morrigan]] as hidden characters (the latter being only in the Dreamcast version, which was published by Capcom).
* The classic PS1 racing game ''Test Drive 5'' had the Fear Factory (one of the bands who supplied the music) wagon.
* ''RumbleRoses'''s Reiko was[[note]]The past tense is because the servers are shut down[[/note]] a multiplayer skin on ''VideoGame/MetalGearSolid3: [[UpdatedRerelease Subsistence]]''.
* VideoGame/{{Klonoa}} in ''Moto GP''.
* ''WarriorsOrochi 3'' has five guest fighters: [[BladestormTheHundredYearsWar Joan of Arc]], [[WarriorsLegendsOfTroy Achilles]], [[TrinitySoulsOfZillOll Nemea]], [[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]].
* 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 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/{{Spider-Man}}, {{Wolverine}}, {{Shrek}}), and musicians as well ([[Music/GreenDay Billie Joe Armstrong]], [[{{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?!).
* In ''VideoGame/BadDudes'', the first boss was Karnov, who was the protagonist of his own - much more obscure - game.
* Similarly, ''Mario Hoops 3-on-3'' and ''Mario Sports Mix'' featured a White Mage, Black Mage, Ninja, Moogle, and Cactaur from ''FinalFantasy'', due to Square-Enix being the developer.
** Similarly (again), the arcade ''VideoGame/MarioKart'' games (by {{Namco}}) have PacMan, Ms. Pac-Man, Blinky and Mametchi (a Tamagotchi); this is notable for being the first crossover between the Namco and Bandai halves of the merged NamcoBandai.
*** And in turn, the ''Mario Kart'' clone ''Pac-Man World Rally'' (published, not developed, by Namco) has [[KatamariDamacy the Prince of All Cosmos]], [[DigDug a Pooka and a Fygar]]; the PSP version also has the exclusive characters of VideoGame/{{Mappy}} and MrDriller.
* ''NBAJam'' featured anyone and everyone from the designers to President 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.
*** For a similiar yet unrelated factoid, the NFL almost killed the ''NFL Blitz'' series for being quite violent for a football game. Midway ran with it and dropped the NFL license to produce ''Blitz: The League'' which is, yes, rated M. (And bringing things full circle is that the sequel to ''Blitz'' has what can be considered the predecessors to ''VideoGame/MortalKombat9'''s X-Ray moves.)
** 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.
* [[spoiler:IndianaJones]] can be unlocked in ''[[LegoAdaptationGame Lego Star Wars]]: The Complete Saga''. Likewise, [[spoiler:[[StarWars Han Solo]]]] is unlockable in ''Lego Indiana Jones'' (both cases doubling as an ActorAllusion).
* Midway was prone to do this with ''MortalKombat'' characters in non-fighters:
** Early version of ''NBA Jam Tournament Edition'' as noted above.
** ''VideoGame/UnrealChampionship2TheLiandriConflict'' has Raiden as playable and Shao Kahn as an announcer.
** Scorpion, Sub-Zero and Noob Saibot in the arcade shooter ''The Grid''.
** Raiden and Shinnok in ''NFL Blitz''.
** Scorpion and Sub-Zero in ''MLB Slugfest''.
** Scorpion in ''VideoGame/PsiOpsTheMindgateConspiracy''.
* ''Virtua Striker 3'' and ''2002'' has a [[SonicTheHedgehog Sonic]] team consisting of the hedgehog and his friends.
** And Yuji Naka as an announcer.
* 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.
** Dante also pops up as an unlockable player character in the PS2 version of ''ViewtifulJoe''.
* 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 also appears in ''VideoGame/FightersMegamix'', with a fighting style similar to ''VideoGame/FightingVipers''. That's right. ''A fighting race car'', a whole new meaning for CarFu.
* [[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.
* The Virtua Formula in the Sega Genesis port of ''{{OutRun}}ners'', only accessible through a code [[GameBreaker but is the fastest and grippiest of all the selectable cars in the game.]]
* ''[[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.
* In an ironic twist, [[StreetFighter Ryu]] is a guest fighter for ''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.
** [[spoiler: Akuma and Evil Ryu]] will also be Guest Fighters.
* In ''Hot Shots Tennis: Get a Grip'', you can play as one of the Helghast from ''{{Killzone}}'' (and recruit another as an umpire), but you have to [[DefeatMeansPlayable beat them first]].
* VideoGame/{{Bayonetta}} is a Guest fighter in ''AnarchyReigns'' if you preordered the game or bought the DLC.
* In ''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.
* [[VideoGame/JakAndDaxter Jak, Daxter]], [[VideoGame/RatchetAndClank Ratchet, Clank]], [[VideoGame/GodOfWar Kratos]], [[VideoGame/LittleBigPlanet Sackboy]], [[VideoGame/GravityRush Kat]], and the aforementioned Toro have all made appearances in some of the later ''HotShotsGolf'' games.
* 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]].
* Kurisu Makise of ''VisualNovel/SteinsGate'' is playable as a DLC character in 5pb/Mages.' beat-em-up ''Phantom Breaker: Battleground''.
* 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.
* Music/RobZombie shows up as a driver in ''VideoGame/TwistedMetal 4''.
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