Cosmic Boy is a superhero from the XXXI Century.
Born on Earth from a Braalian family, Rokk Krinn inherited his people's power to manipulate magnetic fields. After saving R.J. Brande's life with Saturn Girl and Lightning Boy, he founded the Legion of the Superheroes and became its historical leader.
Role in Injustice
Powers and abilities
Cosmic Boy possesses the ability to manipulate magnetic fields, creating force fields, manipulating any kind of metal, flying, and even tapping into a planet's magnetic field itself. Extremely powerful, he's also a capable leader and a wise tactician.