Superman: The Animated Series - Season 2 Episode 1 Blasts from the Past (1)
Overview: Superman decides to release Mala, a Kryptonian criminal, from the Phantom Zone, but when Mala proves too power-hungry for this world, Superman tries to send her back. Mala escapes with the Phantom Zone Projector and releases Krypton's most notorious traitor, Jax-Ur.