Unlock the following costumes by performing the corresponding tasks:
COSTUME - HOW TO UNLOCK Ratcicle costume - Ratcicle Kingdom Arena. Talk to the character on the right for the costume. Spike costume - Desert Arena. Talk to the three headed mutant for the costume. Snipe costume - Wumpa Island Arena. Talk to Crunch for the costume. Magmaden costume - Junkyard Arena. Take the "Roller" exit with all the Mojo to go to the far side the village and talk to the cub for the costume. Skeleton costume - Mount Grimly Arena. Go to the area where you first encountered Yuktopus and talk to Uka Uka for the costume.