Puyo Puyo Party cheats and cheat codes for Nintendo 64

Random character selection:
Go to the character selection screen, then highlight Lulu 
and hold Start.

Unlock all characters are elephants
Go to the character selection screen, then highlight the elephant 
and hold Start.

Unlock Dark Arle as playable character:
Select one player or two player mode. Hold R and press A 
at the character selection screen.

Unlock Carbunkle as playable character:
Go to the character selection screen, then highlight Arle the 
girl and keep held Start until Carbunkle appears. 

Unlock Satan as playabler character:
Go to the character selection screen, then highlight Shin 
and keep held Start until the Satan appears.