What other characters are in Sonic Unleashed

Sonic is the main character, obviously. Chip is a new character, also later known as Light Gaia. Dark Gaia is the big evil monster in the middle of the world. Dr. Eggman is the evil genius who gave Dark Gaia a wake-up call. Tails is a two-tailed fox and Sonic's best friend. Prof. Pickle is a professor at Spagonia and Shamar universities. Amy Rose is a hedgehog who is in love with Sonic. There are lots of minor characters besides that, but they're the main ones.