Ultra Boy

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Real Identity: Jo Nah
Affiliation(s): Legion of Superheroes
Appearances (STAS): New Kids in Town
Appearances (JLU): Far From Home
Powers: Super Strength, Super Speed, Invulnerability, Flight and Enhanced Vision

Jo Nah grew up in the later half of the 30th century on the planet Rimbor. The planet is known for its child neglect. While on a salvage mission in space, Jo Nah's ship was swallowed by a giant creature. To survive, Jo Nah ate some of the creature's flesh and in the process, gained super powers; super strength, speed, invulnerability, flight and vision powers. However, he can only use one power at a time.

Jo Nah left Rimbor and joined Leland McCauley's Workforce, the Legion of Superheroes' competition as Ultra Boy. However, Ultra Boy later joined the Legion and fell in love with fellow teammate Phantom Girl.