First Appearance: KINGDOM HEARTS (2002)
Origin: Hercules (1997)

The loyal pet of Hades, lord of the dead. Cerberus is a ferocious hellhound with three enormous heads to tear foes apart, and he certainly won't hesitate to do so to anyone who stands in his master's way.

Hades sics him on you when you first enter the Underworld, as well as on Cloud when he returns to the land of the living to wreak havoc. Both times, however, Cerberus is easily dispatched. It certainly seems like his bark is much worse than his bite!