| Code | Effect |
|---|---|
| Amigo | Beat all of the side missions |
| Amy | Already unlocked |
| Blaze | Beat Babylonian story |
| Billy | Beat all of the side missions |
| Cream | Beat Heroes story |
| Eggman | Beat Babylonian story |
| Jet | Already unlocked |
| Knuckles | Already unlocked |
| Nights | Beat all of the side missions |
| Rouge | Beat Heroes story |
| SCR-GP | Beat Babylonian story |
| Silver | Beat Babylonian story |
| Sonic | Already unlocked |
| Storm | Already unlocked |
| Shadow | Beat Heroes story |
| Tails | Already unlocked |
| Wave | Already unlocked |
| SCR-HD - FIRST | Beat the entire story mode (Heroes and Baylonians). |