What are the names of the sonic heroes

I'm going to assume you mean the names of all the good guys in the Sonic games...

Sonic the Hedgehog
Amy Rose
Miles "Tails" Prower
Knuckles the Echidna
Cream the Rabbit
Big the Cat
E-102 Gamma (forget the name of the version from Sonic Heroes)
Tikal the Echidna
Shadow the Hedgehog
Rouge the Bat
Blaze the Cat
Espio the Chameleon
Charmie Bee
Vector the Crocodile/Alligator (forget which)
The Chao
Maria (human and doesn't do anything)
Dr. Ivo Robotnik/Eggman (he has been a pseudo-good guy at times)
Chaos (while a major villain was actually just tainted by taint the echidnas of old left on the Chaos Emeralds)
Marine the Racoon
And the three bird losers from the Sonic Riders game, Jet and the other two