S2·E6 Superman Meets His Match
Aired September 23, 1967
Synopsis
A Kryptonite meteor falls to Earth and weakens Superman as its falls into the ocean. When the meteor hits the bottom of the ocean it breaks in two and releases a green creature that has the same powers as Superman. Superman cannot defeat the creature but manages to knock it out. He takes the unconscious creature into space and sends it far away from Earth.