Aku Aku is a magic mask and an ally of Crunch Bandicoot. When he was a Tribesman, he died (his death remains unknown and not seen) and his spirit takes over a mask. He has four feathers on his head and green hair (possibly made of a leaf) on his chin. In the original games, Aku Aku's duty was to protect Crash and he can be summoned three times and he will give Crash a special power. Aku Aku's evil brother, Uka Uka is a dreadful mask who plans world domination.
- In Crash of the Titans and Mind Over Mutant, Aku Aku is voiced by Greg Eagles, who is noted for the voice of the Grim Reaper in Billy and Mandy.