Perform the following actions to unlock additional costumes.

Costume	Action to be performed
Avalon Centrifuge	Ace the Huge Peril for Huge Spaceship.
Clive Handforth	Ace the Fowl Play level.
Dr. Herbert Higginbotham	Ace the Into the Heart of the Negativatron level.
Eve Silva Paragorica	Ace the Invasion of the Body Invaders level.
Larry Da Vinci	Ace the Final Test level.
Sackbot	Finish Story Mode.
Victoria von Bathysphere	Ace the Kling Klong level.