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Playstation 2 - Shaman King: Power Of Spirit cheats

Different endings: 
Good ending: Beat the final Boss normally. 
Bad ending: Beat the final Boss with a map weapon

Secret characters in versus mode: 
Play in versus mode. Press Select on the following characters to unlock
hidden characters:

Press Select Yoh: Unlock Zeke. 
Press Select on Meril: Unlock Masked Meril. 
Press Select on Kanna: Unlock Matilda, or 
Press Select again Unlock Marion Fauna 

Yoh: Halo Blade special move:
Read the Tome Of The Shaman to learn Halo Blade special move.
Press L1 + R1, Up to perform it.

Unlock versus mode in main menu: 
Finish all 20 episodes in story mode.