[[caption-width-right:315:Everybody's favourite lumps of clay!]]
->''A meteor crashed one fateful day, turned Mudville creatures into clay, with heroes bent on doing right, and twisted foes up for the fight, CLAYFIGHTER!''
-->--Clayfighter 63⅓ Sculptor's Cut intro

''Clayfighter'' is a series of fighting games published by Creator/InterplayEntertainment. The series is known for its usage of stop motion animation and clay animation.

The story of Clayfighter begins when a meteor made entirely out of clay crashes on the grounds of a circus located in the town of Mudville. The circus' employees are contaminated by the goo the meteor has emitted, and causes them to transform into twisted and wacky versions of their former selves.

In Clayfighter 2: Judgment Clay, the evil Dr. Kiln uses the goo from the meteor to create even more clayfighters! After the fall of the N. Boss, the final opponent from the first game, Dr. Kiln declares himself grand master of Mudville, and decides to hold a fighting tournament, to see who will become the next grand master of Mudville! Who will win?

In the third game, Clayfighter 63⅓, Dr. Kiln has a new scheme: to transform the entire world into clay! The clayfighters are set to defeat him for once and for all.

Games in the Clayfighter series include:
* Clayfighter (SNES) (1993) and its Mega Drive/Genesis port (1994)
* Clayfighter: Tournament Edition (SNES) (An updated version of Clayfighter)
* C-2: Judgment Clay (SNES) (1994)
* Clayfighter 63⅓ (N64) (1997)
* Clayfighter 63⅓: Sculptor's Cut (N64) (1998) (A updated version the Clayfighter 63⅓)

Interplay also announced a new Clayfighter game for Wii and {{DSi}}, including improved graphics and gameplay, but this was ultimately cancelled. Interplay announced another Clayfighter in early 2015, with an expected release in 2016.
* TheAhnold: Hoppy, in C-2.
** When he becomes a Cyborg in the third game, he loses the Arnold accent entirely and instead becomes a DrillSergeantNasty.
* ArtificialLimbs: Dr. Kiln has replaced his left hand with a mechanical prosthetic one, that can transform into a chainsaw, a scalpel, a machine gun and other dangerous things, after he was forced to amputate it when he accidentally touched the goo the meteor emitted.
* AssKicksYou: Helga
* AWinnerIsYou: In the original game, beating the game on a difficulty other than Hard would simply show the credits. Only with beating Hard mode do you get a text ending.
** This carries over into ''63 1/3'', where Dr. Kiln and the proper character endings are inaccessible on the easiest setting.
* BadSanta: Sumo Santa.
* BlobMonster: The Blob.
* BoxingKangaroo: Kangoo (and her EvilTwin Thunder) from Judgement Clay.
* BrawnHilda: Helga.
* BriarPatching: Taffy has a move where he can fake being dizzied to lure an opponent in for a beatdown.
* BruceLeeClone: Kung Pow.
%%* ChargedAttack
* CharacterizationMarchesOn:
** Bad Mr. Frosty was implied to be a villain in the first game, putting Santa Claus out of work, and in the second, he'd just gotten out of prison, having beaten up Santa Claus directly. By the third game, he's one of the good guys and [[BadSanta "Sumo Santa"]] is one of the playable villains.
** Bonker was maniacally smiling in the first game, but frowning and depressed in the third.
** Blob started out upbeat in the first game, became outright angry and psychotic in the second game, but then turned into a thick-voiced cheerful moron in the third.
** Ickybod Clay went the other way: starting with a creepy and whispery voice in the first game, but a high-pitched cheerful whine in the third.
*** It's probably safe to say that no character kept exactly the same personality
* {{Claymation}}
* DarkerAndEdgier: ''C-2: Judgment Clay'' is both literally and figuratively darker than its predecessor. While the original had a cheery circus motif and cheery music, C-2 has a gritty, ghetto style with heavy rock music and dank, dusty backgrounds. Clayfighter 63 1/3 is even darker, with ominous orchestral music and much more advanced gameplay, including parries and fatalities (which are still comical).
%%* DigitizedSprites
* DummiedOut: The Blob's bomb move in the original game, which proved to be a glitchy mess when used.
* EasyModeMockery: In ''63 1/3'', Dr. Kiln can't be fought on cookie difficulty. The game ends after the MirrorMatch with a message thanking the player for doing some warm-up practice before the real playthrough.
* ElvisImpersonator: Blue Suede Goo, of course.
* EvilRedhead: Dr. Kiln.
* EvilTwin: the final boss of Judgment Clay is an evil version of your chosen character, with different moves and ( usually) different animations, as well as a different name (Blob fights Slyck, Bad Mr. Frosty fights Ice, Tiny fights Butch, etc).
* FinishingMove: Dubbed Claytalities in the N64 version.
* FluffyTheTerrible: Tiny.
* FunWithFlushing: A stage in 63⅓ takes place above a toilet that it's possible to knock your opponent into.
* GettingCrapPastTheRadar: In Sculptor's Cut, it's possible to have Lady Liberty ram her opponents with her chest as an attack, in which you can see her ''flashing her breasts.'' Granted, it's hard to see because of the .jpeg artifacts and pixellation, but if you have particularly sharp eyes, [[http://imageshack.us/a/img829/7310/flashdem.png well...]]
* GuestFighter: VideoGame/EarthwormJim and VideoGame/{{Boogerman}} in 63⅓.
* HalfTheManHeUsedToBe: Several of the Claytalities. Most characters have at least one that does this.
* LadyNotAppearingInThisGame: a male example in Dr. Kiln. He's supposedly the BigBad of the second game, but he doesn't appear in person until the third.
* LullDestruction: It's particularly bad in 63⅓, especially during the Claytalities, where it seems that random voice clips are thrown together in random succession.
* MadScientist: Dr. Kiln. Complete with the stereotypical hunched back, glasses and the [[HerrDoktor German accent]].
* MadeOfPlasticine: Literally.
* MagicMeteor: The meteor made out of clay that emits goo that is able to transform living creatures and inanimate objects into clay creatures.
* MonsterClown: Bonker from the first and third game.
** Though he changes a lot between games. In the first, he's an eternally-grinning psycho clown, in the third, he's a constantly-frowning DeadpanSnarker.
* NiceHat: Bad Mr. Frosty's top hat.
* NoCelebritiesWereHarmed: Blue Suede Goo. [[ElvisPresley Elvis]] impersonator much?
* OrganAutonomy: High Five, [[spoiler:Dr. Kiln's severed hand, that has been mutated into a large and sentient being by chemicals. Holds deep hatred for his former host.]]
* PunBasedTitle: ''Clayfighter 2: Judgment Clay'', and ''Clayfighter 63⅓'', which are allusions to the second ''{{Terminator}}'' film and the [[SuperTitle64Advance "64" endings]] of N64 games, respectively.
* PunnyName:
** The first game's final match against N. Boss.
** Many of the fighters' names, most obvious being ElvisImpersonator Blue Suede Goo and pumpkin-headed [[Literature/TheLegendOfSleepyHollow Ickybod Clay]].
** All of the character endings in ''Sculptor's Cut'' as well. For instance, here is Ickybod Clay's:
--> "Ickybod Clay has succeeded in scaring all of the good guys off the Island of Claymodo. He knew that those weaklings didn't stand a ghost of a chance. His spirit high, his sole wish was to terrorize everyone on Claydonia and frighen all that see him. Icky's dream has just come to life, as he has made our heroes flee from his haunting visage. I'm afraid that's the end of this macabre tale."
* PutOnABus: Blue Suede Goo, Helga, Ickybod Clay, Taffy and Bonker were unavailable in the 2nd game. N. Boss also disappears as the final boss of Clayfighter 2 is your character's evil twin.
** For Blue Suede Goo and Helga, they don't show up in Clayfighter 63 1/3 ether.
*** According to [[http://www.polygon.com/2015/3/2/8135465/clayfighter-hd-remaster-interplay this]], Blue Suede Goo's a shoe in. No word on Helga, though.
** Sad to say, Octo, Kangoo, Nana Man, Goo Goo, and the evil twins disappear after Clayfighter 2, with Tiny from the first Clayfighter joining Blue Suede Goo and Helga on that bus.
*** TheBusCameBack: For Taffy, Ickybod Clay and Bonker. If [[http://www.polygon.com/2015/3/2/8135465/clayfighter-hd-remaster-interplay this article is to be believed]], Blue Suede Goo and Tiny will be back in the Remastered Clayfighter as well.
* SadClown: Bonker in C63&1/3.
* SecretCharacter: at least one per game (save Tournament Edition):
** Clayfighter: N.Boss is avalible by entering a code.
** C2: The evil twins after beating the game.
** 63 1/3: Boogerman, Dr, Kiln, Sumo Santa.
** Sculptors Cut: VideoGame/EarthwormJim and Boogerman by beating the game. High Five by a code.
* ShapeshifterWeapon: The Blob. Also, Dr. Kiln's prosthetic hand is able to transform into dangerous weapons.
* ShoutOut: Helga's [[http://www.vgmuseum.com/end/snes/b/cfhel.htm Hard mode ending]] from the first game tells the player she once was married to Olaf the Stout, one of TheLostVikings, and left him for Tiny the wrestler.
** ''Franchise/MortalKombat''[='=]s fatalities, ''VideoGame/StreetFighterIII''[='=]s Parries, ''[[VideoGame/{{Darkstalkers}} Vampire Savior]]''[='=]s general gameplay system, and ''VideoGame/KillerInstinct''[='=]s combos system in 63 1/3 (you can even do combo breakers in the game).
* {{Snowlems}}: Bad Mr. Frosty.
* StealthPun: The ending credits always have an animation of Helga shouting at the very end. [[spoiler:It ain't over 'til the fat lady sings.]]
* TotallyRadical: Originally, Bad Mr. Frosty wore a blue top hat (to be evocative of the magic hat that is commonly depicted as bringing the original Frosty the Snowman to life). In ''C2: Judgment Clay'', though, he started wearing a backwards baseball cap. (The top hat was restored in the third game, though.)
* UpdatedRerelease: ''Clayfighter: Tournament Edition'', as well as the "Sculptor's Cut" of 63⅓.
* WasOnceAMan: All of the characters from the first game were mutated humans.
* WeaponizedLandMark: Lady Liberty, the Statue of Liberty turned into a sentient being made out of clay by Dr. Kiln, that is able to use her torch as a flamethrower.
* WiiWare: the cancelled fourth game.
* WitchDoctor: Houngan, the evil Jamaican witch doctor.