Play as Despair:
Press Right(2), Left(2), Right, Left, Right at the main menu to unlock Despair and give Xena additional attacks. A sound will confirm correct code entry. Alternately, press C-Left, C-Right, C-Left, C-Right at the main menu. or successfully complete the game under any difficulty setting.

Play as Bunny Despair:
Press Right(2), Left(2), Right, Left, Right, C-Left, C-Up, C-Right, C-Down at the main menu. A sound will confirm correct code entry. Alternately, press C-Left, C-Up, C-Right, C-Down at the main menu. Select Despair to have him appear in a bunny costume.

Titan mode:
Press Right(2), Left(2), Right, Left, Right, C-Up, C-Down, C-Up, C-Down at the main menu. A sound will confirm correct code entry. This allows three people to be fought in quest mode.

Fight Gabrielle instead of Hope:
Press Right(2), Left(2), Right, Left, Right, C-Left(4) at the main menu. A sound will confirm correct code entry.

Small fighters:
Hold A and press Right(2), Left(2), Right, Left, Right, WP, SP, SK, WK, A during a fight.

Polygon fighters:
Hold A and press Right(2), Left(2), Right, Left, Right, SP(2), A during a fight.

Invisible fighter:
Hold A and press Right(2), Left(2), Right, Left, Right, SK(3), WK, Z during a fight.