In the episode "Drama Queen," Zee cannot decide between Oliver Queen and Mortimer Drake for the male lead role in a school play she is directing. Oliver wins it by sabotaging Mortimer's audition, but several mishaps during rehearsals put his safety at risk. On opening night, he blames Mortimer for the accidents and admits to the audition being sabotaged; Zee, appalled, reassigns the role to Mortimer and starts the play, with herself as the female lead. An enraged Oliver then wrecks his stage room, where he discovers his greatest secret: Mortimer intends to harm Zee because of her arrogance and foolishness criticizing Mortimer's acting and praising Zee's. Mortimer threatens her onstage and reveals himself as the villain Cavalier, bent on avenging himself. He then ends up battling Oliver, who suits up as Green Arrow, pulls Zee to safety, and fights Cavalier in a pitched battle; the audience cheers wildly, mistaking this for the actual play. Green Arrow wins the fight, with Cavalier delivering a dramatic death scene that earns praise from both Green Arrow and the audience. The two boys come to respect one another and turn their scorn toward Zee's acting and directing as she fumes in the wings however despite this oliver obvioulsy takes mortimer to jail for his crimes against zatanna.
- He is originally was meant to be Batman's enemy but instead, he becomes Green Arrow's rival.
- Although in the comics he was Batman and Wonder Woman's enemy.
- He is voiced by Griffin Puatu, who voices in Warcraft and Deathstroke: Knights & Dragons.
- His appearance in his civilian clothes resembles that of Lin-Manuel Miranda.