James Gunn may have just teased an eventual Superman and Batman crossover in the DCU. A DC fan shared a '40s comic book cover on Bluesky that features Batman, Robin, and Superman racing each other and wrote,

James Gunn has shared a photo of him standing next to Zack Snyder and fans are now hoping the two may collaborate on a DCU project.

James Gunn is on a Superman comic from DC Comics in May... well, I mean, on a cover at least. Of Superman Unlimited #1.

Zack Snyder was among the first filmmakers to tackle several projects in the DC Extended Universe but, as his time with the studio was done, James Gunn will take over the characters in the upcoming DC Universe.

If only the DC fandom can be this mature- @antoniohernandez; He gonna direct a DCU elseworlds film? @gordiesgram ; Hopefully there is peace. No more Gunn v Snyder hate @_tylerhodg