Zan-Em

• Also known as

Zan-Em was a psychic scientist who was banished to the Phantom Zone for unauthorized mind control experiments. As part of his plan to escape the Zone and trap Superboy there, Zan-Em mentally manipulated Lester Wallace into developing a hatred of aliens. When Lester projected Superboy into the Zone, Zan-Em remarked that he had been confined there for nearly two decades. Superboy soon escaped, leaving Zan-Em trapped in his prison.