Knightfight, written by Joshua Williamson and drawn by Dan Mora, is a limited, 4-issue comic book series published by DC in 2025. Spinning off from DC: KO, the series follows Bruce Wayne travelling through multiple alternate universes created by the Heart of Apokolips, where each of Bruce's sons (Dick, Jason, Tim and Damian) has succeeded him as Batman. Bruce has to fight each of his sons so he can go back to the DC: KO tournament.
