Sonic the Fighters (called Sonic Championship in North America), is a fighting game.

An employee at AM2 in Sega added Sonic the Hedgehog characters into a copy of the game Fighting Vipers during his spare time. His coworkers liked the idea, so the game was developed and released in the arcade in May 1996, running on the Sega Model 2B board.

The following characters are playable:

• Sonic the Hedgehog (can transform into Super Sonic during the final matches)
• Miles "Tails" Prower
• Knuckles the Echidna
• Amy Rose
• Espio the Chameleon
• Fang the Sniper
• Bean the Dynamite
• Bark the Polar Bear

If a character defeats all eight opponents, he will face Metal Sonic and Doctor Eggman (His North American name, Doctor Robotnik, was misspelled as 'Doctor Robotnic' in that distribution.)

A Sega Saturn version was announced but never released.

A new fighting game was released for Game Boy Advance called Sonic Battle.