Klarion the Witch Boy is a supervillain appearing in American comic books published by DC Comics, having first appeared in The Demon #7 and was created by Jack Kirby. The character is typically portrayed as a powerful but mischievous, immature extradimensional warlock who serves as both the archenemy of Etrigan the Demon and is a reoccurring adversary for various mystic characters and teams in the DC Universe.

Young Justice is an American superhero animated television series developed by Brandon Vietti and Greg Weisman for Cartoon Network and Distributed By Warner Bros. Domestic Television. Despite its title, it is not a direct adaptation of Peter David, Todd Dezago and Todd Nauck's Young Justice comic series, but rather an original story set in the DC Universe with a focus on teenage and young adult superheroes.