Aku Aku is a magical mask that protects Crash Bandicoot and serves as a useful ally to him in most Crash Bandicoot games. He has a twin brother mask Uka Uka who the complete opposite of him and is also very evil. In the Crash Bandicoot games, Aku Aku can be found in crates with a picture of the a mask on them. Once the crate is smashed, Aku Aku will be released and will allow Crash to be able to withstand one hit from an enemy.