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Don’t mention the M-word: are mutant X-Men about to show up en masse in Spider-Man: Brand New Day?
An intriguing chat about warped DNA in the record-breaking trailer for the new Spider-Man movie could mean a host of long-awaited arrivals in the MCU

TL;DR
- The MCU previously avoided the term "mutant" due to 20th Century Fox's ownership of X-Men rights.
- The trailer for "Spider-Man: Brand New Day" shows Peter Parker undergoing an apparent transformation, hinting at organic webs and altered DNA.
- Rumors suggest Sadie Sink may play a young Jean Grey, and Mark Ruffalo's character warns about the dangers of mutating DNA.
- This could be a prelude to the mass arrival of mutants in the MCU or simply a Marvel tease.
- The trailer also suggests a return to street-level crime-fighting for Spider-Man.