Spider-Man 4 fans have spent months discussing every rumor surrounding Marvel’s next wall-crawling adventure, but a recent exchange involving the film’s stars may have given audiences a fresh mystery to investigate. As excitement continues to build around Spider-Man: Brand New Day, a playful conversation between the cast has sparked new speculation that Bruce Banner’s gamma-powered alter ego could look very different when the movie finally arrives in theaters.

Zendaya’s question hints Hulk may not be green in Spider-Man 4

A recent interview involving the Spider-Man 4 cast captured the attention of Marvel fans. During a lighthearted conversation, Tom Holland confidently stated that “The Hulk is green.” However, Zendaya quickly challenged the assumption by responding, “Is he, though? I don’t know.”

The conversation became even more intriguing when Jacob Batalon added that there are “other colors,” prompting Holland to immediately laugh and backtrack. “I didn’t say that. I’m getting hot,” he said.

Although the moment may have been nothing more than playful banter, fans immediately connected it to ongoing rumors surrounding Grey Hulk and his possible appearance in Spider-Man 4.

Speculation surrounding Grey Hulk has circulated for months. Even insider Daniel Richtman suggested that this time, fans may see a Grey Hulk.

While none of these claims have received official confirmation from Marvel Studios, the discussion has continued gaining momentum as new promotional content emerges.

The theory extends beyond a simple color change. Several reports have suggested that Bruce Banner could play a larger role in Spider-Man 4 than initially expected. The first trailer of the movie shows Peter Parker interacting with Banner in what looks like an academic setting. This leads some fans to believe the scientist may serve as a mentor figure during part of the story.

Meanwhile, speculation has also centered on Zendaya’s co-star, Sadie Sink, and her mysterious character. Various fan theories propose that her role could be connected to any major Hulk transformation that occurs during the film.

For now, the possibility of the Grey Hulk appearing in Spider-Man 4 remains firmly in the realm of rumor. Marvel fans will have to wait a bit more until the movie arrives in theaters on July 31, 2026