Deen was an insane, wheelchair-bound old man living at the top of a jungle plateau. He had his trained pet Pteranodon, Turu, kidnap the local natives, forcing them to work in the plateau's mines, mining for him what he thought was silver. Deen's operation was brought down when Dr. Benton Quest and Race Bannon invaded the plateau. Bannon shot Turu with a bazooka, causing the winged reptile to fall into a tar pit. Deen, who despite his cruel treatment of his fellow man daily, dearly loved the Pteranodon, and died in the tarpit along with Turu when he made a vain but heartfelt attempt to rescue his pet.