Star Gladiator 2 cheats and cheat codes for Dreamcast

Easy mode:
Press L + R + A during gameplay.

Unlock Evil Gamof as playable character:
Highlight Gamorf at the fighter selection screen and hold
Start and press A.

Unlock Rai-On as playable character:
Highlight Byakko at the fighter selection screen and press
Up, Down, Left, Left, Right, Left, Up.

Unlock Kaede as playable character:
Highlight Rain at the fighter selection screen and press
Down, Down, Left, Left, Up.