Professor Charles Xavier is more than just a formidable mutant telepath. He's an activist who founded the Xavier School for Gifted Youngsters, which serves as a home for young mutants while also providing them the opportunity to hone their abilities. His complicated dynamic with Magneto partially stems from his assimilationist tendencies, which clash with Magneto's more assertive, often violent brand of mutant pride. While Professor X has undergone several iterations across countless comics, his activism has always been an integral part of his character, even when his morality has leaned towards grey areas.

This key character trait is the sole reason why Patrick Stewart, who primarily portrayed Professor X in the "X-Men" franchise (and the Marvel Cinematic Universe) , accepted the role.

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