Kavu Island was an island on Tyhrranosis, that the Galactic Rangers had set base on. After successfully defeating the Momma Tyhrranoid, Ratchet was called to battle, as the Galactic Rangers were under attack. Ratchet and the rangers then fended off the Tyhrranoids in several battles, destroying their base and taking control of the island.
The terrain of Kavu Island was very similar to that of the Korgon Base on Tyhrranosis, which mostly consisted of grass, soil and mud. The island was rather circular; however, only one half was played in the battlefield fights. When it is viewed in the map, it looks similar to a face, with a body.