Amanda Waller Warhawk 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. In the animated series' related comics, Warhawk appeared in Batman Beyond issue #21 ("The Blackest Day - Part 1") when Batman teams up with the JLU in a high-voltage adventure as they battle new villain Blacklight. Warhawk's next appearance was in Justice League Unlimited. In the season one finale "The Once and Future Thing, Part Two: Time Warped", Warhawk met the modern-day Green Lantern (John Stewart), the original Batman (Bruce Wayne) and Wonder Woman after Chronos sent them to the future. At that time, he is a member of the remaining future JLU members alongside Static (Virgil Hawkins) and Terry McGinnis. Warhawk later revealed that he is Rex Stewart, the son of John and Shayera Hol at the time his father was involved with Vixen after having broken up with his mother since the traumatic events of the episode "Starcrossed". Regardless, John bonds with his future son, even saving him from death during the battle with the Jokerz. After the cyclical causality erased memories of the team-up from the future JLUers and Wonder Woman, only John and Batman retained knowledge of Warhawk's existence. Learning Warhawk's future existence made John suffer indecision between the two women. John decided to keep this information a secret from Shayera to which Batman agreed. Warhawk also appears in the second season finale "Epilogue", again as a member of the JLU. In the third season episode "Ancient History", John finally informs Shayera that she is to become the mother of his child. This information briefly gives Shayera an ecstatic feeling of hope. But despite still loving Shayera, John decides to stay with Vixen and "refuses to be destiny's puppet", preferring to let things work themselves out. After this, Shayera asks Batman to tell her what he knows about