Sonic Rivals 2 is the sequel to Sonic Rivals. The game was developed by Backbone Entertainment and supervised by Sega Studio USA, exclusively for the PlayStation Portable handheld videogame console. Sonic Rivals 2 was released on November 13, 2007 in North America. Like the Original, Sonic Rivals 2 was also not released in Japan.

Characters

Sonic the Hedgehog: "The World's Fastest Hedgehog," Sonic works with Tails to investigate the Chao disappearances.

Miles "Tails" Prower: Sonic's friendly sidekick, Tails assists Sonic in finding the missing Chao.

Knuckles the Echidna: The Guardian of the Master Emerald, Knuckles teams up with Rouge to find it once it goes missing.

Rouge the Bat: A government spy with a great desire for jewels, Rouge teams up with Knuckles to find the Master Emerald.

Shadow the Hedgehog: The "Ultimate Life Form", Shadow works with Metal Sonic to stop Eggman Nega's plans
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Metal Sonic: Sonic's Robot doppleganger, Metal Sonic is sent by Eggman to work with Shadow.

Silver the Hedgehog: A Psychokinetic Hedgehog from the future, Silver works with Espio to rescue the missing Chao.

Espio the Chameleon: A ninja master, Espio works with Silver to solve the case of the missing Chao.