| # | - | A | - | B | - | C | - | D | - | E | - | F | - | G | - | H | - | I | - | J | - | K | - | L | - | M | - | N | - | O | - | P | - | Q | - | R | - | S | - | T | - | U | - | V | - | W | - | X | - | Y | - | Z |
| Characters |
| E Series Robots |
| Main Characters |
| Metal Sonic |
| NPCs |
| Civilians |
| Froggy |
| Tikal |
| Bosses |
| Chaos 0 |
| Chaos 1 and 2 |
| Chaos 4 |
| Chaos 6 |
| Egg Hornet |
| Egg Viper |
| Perfect Chaos |
| Zero |
| Miscellaneous |
| Cars |
| Emeralds |
| Plot Summary backgrounds |