Professor X – Charles Xavier
The first episode should feature Professor X with a flashback with Charles Xavier studying the X-gene, dropping an Apocalypse Easter egg in an Egyptian text or hieroglyphs. We can jump forward to post fallout from the battle against the Brotherhood.
He’s in political strife as the face of the Mutants trying to explain what he can. They can introduce senator Kelly in this episode as we look to lay the foundation for several movies and shows. His episode would feel more political than the others, but it will set the foundation for what’s to come. Nathan Essex should be part of the episode.
Professor X’s episode should have a few cameos. One cameo should be Magneto (who he helped lock up), and another should be his ex-wife Gabrielle Haller. In the comics, she was a Holocaust survivor and victim of Sinister whom he helped and had a relationship.
They could tweak her story a bit by retconning her backstory a bit by making her someone he helped in the 90s. Sinister will be the cause, but she won’t be over a hundred years old. They could have a strained relationship. Naturally, this sets the foundation for his son, David Haller, aka Legion. Actors like Giancarlo Esposito, Jeffrey Wright, Stanley Tucci, or Gustaf Skarsgård would nail the role of Professor X.