Sonic the Hedgehog
Get from the start
Tails "Miles Prower"
Get from the start
Knuckles
get from the start
Amy Rose
get from the start
Cream
find before going in House of Eggman
Shadow the Hedgehog
Get By finding 2 chaos emeralds
Rouge the Bat
Get by collecting 4 Chaos emeralds
Silver the Hedgehog
get by completing All Special Stages in world 1-4
Blaze the Cat
get by Playing as Silver in all of world 5
Aya Williams
Get by completing ALL Levels in world 1
Candy the Hedgehog
Get by Beating her Boss battle
Zane the Hedgehog
Get by beating his boss battle
E-106 Upsilon
Get by beating his boss battle
Chess the Robot
Get B