The game features eight playable characters and one boss character:
Bad Mr. Frosty – A
snowman with a bad attitude. His special attacks include throwing snowballs, spitting sharp balls of ice, sliding along the ground and kicking his opponent, and turning into a snow boulder and rolling into his opponent. His arena in 1-player mode is an icy lake in front of an ice block castle with penguin spectators. His
taunt consists of his standing with arms akimbo or gesturing while stating "I'm bad, I'm cool, I'm no-one's fool."
Blob – A blob of clay. A self-proclaimed master of "
goojitsu", his specialty is "
morphing" into objects to attack his opponent, with his specialty being transforming into a buzzsaw and cutting his opponent in half. He is said to be highly intelligent, despite being made up of the slimy dregs of the mutagenic meteor. His arena is a pool of green slime.
Blue Suede Goo – An
Elvis impersonator with wildly exaggerated features, including a big gut and even bigger hair. He throws musical notes at his opponent and uses his hair as a blade. He fights on the keys of a flaming piano with the words "Big Hunk O' Burnin' Clay" (a parody of the Elvis song "
Hunka Hunka Burnin' Love") on it. His name is a parody of the 1950s song "
Blue Suede Shoes", a version of which Presley recorded on his debut album.
Bonker – A cheerfully manic clown whose arsenal includes deadly pies, killer cartwheels, a spraying flower, and the big hammer that gives him his name. He will fight in two funhouses, one resembling a clown head, the other resembling a bubble-spewing
rubber duck (although their interiors are the same, save for a palette swap).
Helga – An obese and heavily breasted opera singer dressed in
Viking attire. She is Blue Suede Goo's rival and attacks by hurling herself at her opponents, stabbing them with the horns on her helmet, and by belting a high vocal note for a sonic scream. The first opponent in single player mode, she fights at an open-air opera theatre.
Ickybod Clay – A
scarecrow-like ghost with a pumpkin head. He can teleport and throw balls of
ectoplasm at foes. His name is a play on
Ichabod Crane from "
The Legend of Sleepy Hollow", and his pumpkin-head is based on the
Headless Horseman from the same tale. His arena is a haunted house.
Taffy – A fighting piece of
taffy whose attacks mainly involve stretching and twisting his thin but super-flexible body. As a result, Taffy uses some of the longest-reaching moves in the game. He can also twist himself tightly to cause himself to spin at his opponent while his arms flail. In 1-player mode, he will fight in two overflowing taffy factories.
Tiny – A buff, large-toothed
wrestler-type character with a penchant for posing, who does not really rely on wrestling. Instead, he uses his big fists to charge across the screen and punch, as well as rolling himself into a ball and flinging himself at foes. Another opponent with two palette-swapped arenas, he will fight in a wrestling ring or at a coliseum.
N. Boss – The final boss is an anthropomorphic string of pearls with two eyes (one wide open, one half closed). N. Boss only attacks with projectiles copied from other characters and a grab attack. Unlike the other characters, he does not appear to be made of clay and the announcer does not announce his name at the start of the match or when he wins. N. Boss uses the purple meteor itself as his arena, although it is actually a palette swap of The Blob's stage. In
ClayFighter: Tournament Edition, he has his own arena. His name is a play on
M. Bison from
Street Fighter II and the phrase "
end boss". ==Development==