Fight as Boss against CPU
Press Left(3), Right(3), Left(7) at the game selection screen. The sound of an explosion will confirm correct code entry. The Vs. mode option will be highlighted. Press Start to display a new character selection screen. Any character may be chosen to fight the CPU.
Fight as Boss against player two
Press Left(3), Right(3), Left(7) and reset the game at the game selection screen. Return to the game selection screen and press Right(3), Left(3), Right(7), Start. The sound of an explosion will confirm correct code entry.
Slow motion
Press Start on controller two during a one player game.