Kong: The Animated Series

On Kong Island, the evil Professor Ramone De La Porta forces Dr. Jenkins to take him to the location of the powerful, mystic Primal Stones. Jason, Tann, and Lua frantically search the exotic Island for the kidnapped scientist. They find Dr. Jenkins and De La Porta in the ruins of an ancient temple. De la Porta merges with a giant prehistoric bear, becoming Slothbear, and attacks them. Jason merges with Kong and defeats him.