Cosmic Boy is a fictional superhero appearing in comic books published by DC Comics. He first appeared in 1958 and is a member of the Legion of Super-Heroes, a team of heroes from the future. His real name is Rokk Krinn, and he hails from the planet Braali. Cosmic Boy has the ability to generate and manipulate magnetic fields, which allows him to control metal objects and create force fields. As a founding member of the Legion, Cosmic Boy plays a crucial role in their adventures, often serving as a leader. He is known for his strong sense of justice and commitment to protecting the universe. Over the years, Cosmic Boy has appeared in various comic series, animated shows, and video games, solidifying his place in the DC Universe.