Storm

Among all of the X-Men, what makes Storm so special? After all, given the way Logan ended, Wolverine could have appeared on this list. He’s one of the most popular mutants ever, and Hugh Jackman has said that he’s game if the character is added to the MCU. Hell, we could have mentioned Deadpool, too, for that matter.
However, none of them has what Storm has: an actual connection to an already-existing Marvel Cinematic Universe character. Many see this as one of the deepest and most meaningful relationships in the Marvel Comic Books universe. Ororo Munroe is more than just a powerful and renowned mutant. In the comics, she’s also Black Panther’s wife. Their story as a couple goes way back to when Storm saved the life of the Wakandan prince when she was just a child (this is one side of the story).
So the MCU would have not just one awesome black superhero, but two, and they’re an actual couple. And this couple would make any foe tremble at the mere thought of a clash. Combine the athleticism and technology-based powers of T'Challa with the mutant AND magical abilities of Storm and"¦
Well, Alexandra Shipp plays Storm in the X-Men franchise, and we don't believe that Fox will give her away so easily (even if the actress were to express interest in such a possibility).
