Cosmic Boy is a founding member of the Legion of Super-Heroes in the 30th Century. Born on the planet Braal, he has the power to manipulate magnetic fields. He is often viewed as the team's leader for his level-headedness and strength of spirit. His younger brother is Magnetic Kid, his wife is Night Girl, and his best friends are Legion co-founders Lightning Lad and Saturn Girl. He has also used the identities Polestar and Time Trapper. He has also been a member of the Legion of Substitute Heroes. In Reboot Legion continuity, Cosmic Boy begins his career as a famous athlete playing Magnoball. In Prime Legion continuity, Cosmic Boy later becomes a member of the Knights Tempus. Cosmic Boy was created by Otto Binder and Al Plastino, first appearing in Adventure Comics #247. (1958)