Klarion

Klarion the witch boy appears in the 7th episode of Young Justice alongside Abra Kadabra, they both are responsible for kidnapping the Kent V.Nels.

History
Klarion is a young practitioner of the dark arts originally hailing from Witch-World, an otherworldly dimension where everyone is at least somewhat knowledgeable about black magic. The problem was, being a child, he was constantly under the direction of adults who dictated what he could and could not do with his powers, as well as what kind of sorcery he could study. Using his power to open a gateway into the normal universe, Klarion and his cat familiar, Teekl, embarked on a journey to learn all there was to know about witchcraft, as well as cause some chaos along the way.