Warhawk (Rex Stewart) is a fictional character created for the DC Animated Universe, voiced by Peter Onorati. In the Batman Beyond two-part episode "The Call", Warhawk is a member of Justice League Unlimited (the Justice League of the future) alongside Big Barda, Green Lantern (Kai-ro) and Aquagirl (Mareena). He was initially at odds with Batman (Terry McGinnis) because he had been recruited onto the team by Superman without the rest of the JLU's consent. But after Batman proved himself to be a competent and trustworthy member against Starro, Warhawk's attitude shifted from reluctant ally to devoted teammate. They would eventually become close comrades and colleagues.