The guardian of the Wumpa Islands and the father figure of Crash and his friends. Aku Aku is the spirit of an ancient witch doctor encased in a floating, wooden mask. When he sensed Crash's mission to stop Doctor Cortex, he scattered copies of himself throughout the Wumpa Islands in an effort to aid him in his mission. Whenever Crash possesses an Aku Aku mask, he will be shielded from one enemy attack or contact. Collecting three Aku Aku masks gives Crash temporary invulnerability from all minor dangers.