The series revolves around main team members Robin, Starfire, Cyborg, Beast Boy, and Raven. While it is an action cartoon, the series is also character-driven, with a focus on the main characters' struggles with being teenage superheroes, their mutual friendships, and their limitations. Seasons four is based upon one of the most popular New Teen Titans arcs, "Terror of Trigon". Many characters from the comics, including Aqualad and Speedy, appear throughout the series.