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Cosmic Boy is a superhero from the XXXI Century.

Biography

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

In Brainiac's ending, Cosmic Boy questions her friend Brainiac 5 after his unauthorized time travel, but dismisses all charges as soon as it's clear that the Coluan's loyalty lies within the Legion.

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.