Go to the options screen from the title screen. Then select story mode, hold Select, and quickly press Up, Down, Right, Left, Square, X, Triangle, Circle. If you entered the code correctly, you will hear a sound. Now the Bosses may be selected during versus or story modes.
Select versus mode, then when choosing a character, hold L1, L2, or R2.
| Infinite Energy Player 1 | 801DDDA0 00C0 |
| Full Power Player 1 | 801DDDA8 00C0 |
| Infinite Energy Player 2 | 801DE3E8 00C0 |
| Full Power Player 2 | 801DE3F0 00C0 |