M.U.S.C.L.E. (Millions of Unusual Small Creatures Lurking Everywhere) was an attempt to market toys in the U.S. based on the manga & anime series Kinnikuman.

In the game the player picks two characters and fights an endless number of two-out-of-three fall matches. The matches can take place in a standard ring, and ice ring, or an electric rope ring. The characters can only punch, jump kick, or perform a German suplex. Randomly, the character Meat will throw a glowing ball in the ring. Whoever grabs it first will start glowing and he can then perform his special attack.

CHARACTERS (Clockwise from the top)
Kinnikuman: The main character of the series, he is a bumbling hero who is fighting to earn the crown of Planet Kinniku. Special Move: Kinniku Buster

Terryman: A Texan who considers himself Kinnikuman's rival. Special Move: Calf Branding

Ramenman: A master martial artist from China with a strong sense of justice. Special Move: Leg Lariat

Robin Mask: An English fighter whose refined appearance hides his brutal nature. Special Move: Tower Bridge

Buffaloman: A monster of a fighter, Buffaloman once lead the Devil Choujin. He later reformed and joined the side of justice. Special Move: Hurricane Mixer

Warsman: A natural cyborg from Russia who was shunned for his appearance. He became a fighter to get out his aggression. Special Move: Screwdriver

Geronimo: A Native American who managed to join the Justice Choujin despite being an ordinary human. After dying in battle, he was reborn as a Choujin. Special Move: Tomahawk

Ashuraman: A six-armed fighter who was one of the Seven Devil Knights. He can swing his arms hard enough to create small tornadoes. Special Move: Ashura Buster