Play as Robert:

Beat Time Attack in under a minute.

Play as Boro:

Just beat the game on easy mode.

Play as Ushi:

Survive in the ring for 1 minute in Rodeo mode.

Play as the Master:

Beat all of the Masters in Master Challenge mode.

Play as Joker:

Beat 100 people in survival mode.

GameShark Codes

P1 Always Have 0 Stars		80209757 0000
P1 Start W/ Extra Stars		d0209757 0000
P1 Start W/ Extra Stars		80209757 000f
P2 Always Have 0 Stars		8020b61f 0000
P2 Start W/ Extra Stars		d020b61f 0000
P2 Start W/ Extra Stars		8020b61f 000f 

Thanks to Revolution readers Magus, Derek Harris, Terry Gladman and Patrick Messal!