DC COMICS: DC Animated Universe JLU Bios (LOSH Cosmic Boy)

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BIOS:
Rokk Krinn is a founding member of the Legion of Super-Heroes under the code-name Cosmic Boy. Rokk is a Braalian and like all of his native race has the superhuman ability to generate magnetic fields. Rokk's parents were struggling for work on the impoverished world of Braal, so he left at the age of fifteen for Earth to find work to assist his family. On a spaceship trvelling to Earth helped save billionaire R.J. Brande from an assassination attempt along with Lightning Lad and Saturn Girl. Brande was impressed by the youth and offered them work founding a team of young super-heroes. Rokk accepted and became Cosmic Boy, the team's first leader. During his first year worked as a leader dedicated and being a figurehead as a founding member and the first leader even when just another active member. After sometime, a romance blossomed between Lydda Jath alias Night Girl of the Legion of Substitute Heroes. After time he raised enough funds to bring his family to Earth, but a firebomb went off in the neighbourhood where they lived. His whole family was injured and his mother later died. This led Rokk to almost kill this also encouraged his younger brother, Pol Krinn, to join the Legion Academy as Magnetic Kid. When he agreed with his fellow founders that they were getting old and it was time they resigned, Rokk was pushing for his brother to be elected to the team in his place.