Fusa was a species of kangaroo-like Rahi that was the mortal enemy of the Muaka. They were known for their powerful hind legs, with which they defended themselves. Most were often found near Po-Koro and along the eastern coast of Mata Nui. They later returned to Metru Nui following its rediscovery, and evacuated onto Spherus Magna after the death of Makuta.