Power Lad

Tom Baker is Power Lad or is he? Jimmy Olsen meets a youth called Tom Baker, who appears to gain super-powers from a scientific accident and becomes the partner of Superman. Later it is revealed that he is really Dik-Rey an evil Kandorian from the bottle city of Kandor, where after his plot is discovered, he is returned back to never to be heard from again.

(SPJO No.45 Jun 1960 "“Tom Baker, Power Lad!”)