Korean animation
The remainder of the first season was produced in-house by Warner Bros. Animation, but since the show was a U.S./Canada co-production, some of the animation production work was outsourced to Canadian animation studios Studio B Productions and Top Draw Animation, as well as South Korean animation production company Digital eMation, which also provided the original main title animation opening. Storyboarding of some of the episodes was done by Atomic Cartoons.