Alternate character
Press one of the following controller combinations at the title screen to play as the corresponding character against Rex.
| Character | Code |
| Bonapart | Press Up, A, C |
| Edwina | Press Left, B + C, C |
| Robochic | Press Right, Up, Down |
| Stump | Press A + C, Right, C |
| Ramses | Press Right, Left, A |
| Webra | Press A + C, Up, Right |
| Guano | Press Up, Right, A + B |
| McFire | Press Down, C, Right |
| Skinny | Press Right, Down, Right |
| Sheba | Press B + C, B, B |
| Brainiac | Press Right, Right, C |
| Buff | Press Left, C, B |
| El Toro | Press B + C, A, Up |
| Spidra | Press A, Down, B |
| Weezil | Press Down, Right, Up |
| Mondu | Press A + B, Down, Left |