Superman would have turned evil in Zack Snyder’s Justice League arc, and Justice League 3 could have made it work. Man of Steel, Zack Snyder’s second DC movie following his Watchmen adaptation, was not designed to be the beginning of a shared universe but rather the first entry in what could have become a Superman trilogy in the mold of Christopher Nolan’s Dark Knight movies. However, after the success of The Avengers and the MCU, the Man of Steel sequel was reinvented as a Batman and Superman crossover that would set the stage for a Justice League film. As such, Snyder’s Superman story had to be adapted.

Although the Dceu, which has been rebranded as Dcu, quickly expanded to other films such as Suicide Squad, Wonder Woman, and Aquaman, Snyder had envisioned a five-movie arc that would go from Man of Steel to Justice League 3. Justice League...