Tor-An was a Kryptonian criminal exiled to the Phantom Zone for performing forbidden experiments in mind transference. He escaped the Phantom Zone and adopted the identity of Michael Barnes, a high school teacher in Midvale. He made Supergirl fall in love with him, and almost succeeded in getting her to marry him, but was foiled and exposed for the criminal he was at the last minute. He was transported to the future and jailed in a Kryptonian cage.
