Kaldur'ahm is from Atlantis and the son of Black Manta. Kaldur'ahm left Atlantis to become Aquamans sidekick, Aqualad. As Aqualad he, Robin, Kid Flash and Superboy created a group of young superheroes assigned to undertake covert operations on behalf of the Justice League operating in Mount Justice with Aqualad as their leader. The other members are Miss Martian, Artemis, Zatanna and Rocket. He has water superpowers. When becoming Aqualad Kaldur'ahm had to leave his friends Garth and Tula.