Mark Ruffalo is set to return as Bruce Banner in Spider-Man: Brand New Day, according to exclusive reports. The actor’s yet to be confirmed return, marks his 10th appearance in a mainline Marvel Cinematic Universe (MCU) project. While the details of his character’s role in the upcoming film remain under wraps, it’s confirmed that Ruffalo will play a significant part, far beyond a mere cameo. It’s still unclear whether Banner will transform into his green alter ego, the Hulk, or remain in his Professor Hulk form, but his role will likely provide mentorship to Spider-Man's Peter Parker. Spider-Man: Brand New Day is set to be released on July 31, 2026 and will begin filming in late July in London, with production expected to wrap in the Fall.