Rokk Krinn (Earth-9107)

Cosmic Boy, Rokk Krinn is a founding member of the Legion of Super-Heroes with the natural ability to manipulate magnetic fields.

On his native Braal, Rokk was a Magnoball champion, and a renowned athletic figure. After saving the life of billionaire industrialist R.J. Brande, along with two others Garth Ranzz and Imra Ardeen, he was invited to join the newly formed Legion of Super-Heroes, a team of superpowered teenagers representing the United Planets across the galaxy.[1] After the brief and unsuccessful tenure of the government-appointed Leviathan, Cosmic Boy became the Legion's first long-term leader.