Ultra Boy - Definition and Overview

Ultra Boy is a fictional character, a member of the Legion of Super-Heroes in the thirtieth century of the DC Universe. He is Jo Nah of the planet Rimbor. He has the powers of ultra-strength, flight, penetra-vision (basically Superboy's x ray vision under a different name)and ultra-speed. However he can only use one power at a time. He gained these powers when he was swallowed by a space whale and was exposed to radiation while inside the whale. His real name is derived from the story of the Biblical Jonah who was the original literary character to undergo being swallowed by a whale and survive.

Ultra Boy first appeared in Superboy #98 (1962). He was romantically linked for many years with fellow Legionnaire Phantom Girl. The names of his parents are Crav and Mytra Nah. His girlfriend on Rimbor before he joined the Legion was An Ryd. She was later murdered and Brainiac 5 was framed for the crime.

In post-Zero Hour continuity he was also linked with Phantom Girl's counterpart in that reality Apparition. They eventually married and had a son together just before the Legion's reality was rebooted for the third time.