The mutants are now officially part of the MCU following X-Men '97, but there is still no live-action X-Men movie, or TV show announced.
Up until how the X-Men will be introduced.
Since Marvel decided to make Ms. Marvel a mutant, it is very unlikely that it will take a multiversal event for the rest of the mutants to be brought into the MCU. Therefore, it should not take long before other mutants are revealed in Phases 4, 5, and 6, even if it still takes a while for an X-Men movie or show. For example, Namor, who is a mutant in the comics, will be in X-Men mutant in the MCU will be – Jean Grey. According to theory, Jean Grey will appear in The Marvels as a nod to the fact she was originally called Marvel Girl in the comics. Jean Grey in The Marvels would work on a meta-level, given the title of the movie, but it would also make sense given how the MCU is introducing the mutants.
Jean Grey’s Marvel Girl Name Explained
Jean Grey has been a member of the X-Men since the conception of the superhero team. On her original appearance in Stan Lee and Jack Kirby’s X-Men, Jean Grey had a superhero alias – Marvel Girl. While the Marvel Girl title never became as established as Scott Summer’s Cyclops or Bobby Drake’s Iceman, Jean Grey’s X-Men name continued to be used for years. It was only during the ‘90s that Jean Grey officially stopped going by Marvel Girl, which coincided with the beginning of a new era for the X-Men, not only in the comics but also on television and later in the movies. More recently, during Jonathan Hickman’s House of X comic book arc, Jean Grey once again started to use her Marvel Girl title.
Theory: Jean Grey Will Appear In The Marvels
The title for The Marvels, the Ms. Marvel to the X-Men.
Jean Grey In The Marvels Can Improve Ms. Marvel’s Mutant Reveal
While Ms. Marvel's reveal that Kamala Khan is a mutant in the MCU was exciting, many believe that it did not add much to the story of the show and that it actually undid a lot of what it had established about Ms. Marvel’s powers and origins. Ms. Marvel’s next confirmed appearance in the MCU will be in The Marvels, meaning that the movie has the chance to better pay off the last-minute reveal of Kamala being a mutant. Jean Grey in The Marvels could establish a connection between Kamala and the X-Men, making the reveal more meaningful. Even if Ms. Marvel never s the X-Men in the MCU, The Marvels could at least reveal, through Jean Grey, that the X-Men are aware of this young, powerful mutant superhero.
