Ozzie's Fort is a secondary home of the warmongering Mystics of the middle ages, apart from Magus's Lair. After the defeat of Magus, only Ozzie, Flea, and Slash remained in the fort, along with Magus's best equipment for battle. They had transferred the treasure to the new location (this tidbit was lost in the English translation). While traveling throughout time, Crono and friends stopped at the fort, where the Mystical Knights challenged them. They were easily overcome by a wandering Cat who foiled Ozzie.