It seems that every other film you see today stars at least one actor who’s appeared in a superhero film or two. The genre is so successful that it’s understandable. What actor wouldn't want to play Batman? What actor wouldn't want to be a part of the fun and highly successful Marvel family? The superhero genre is more than just a launching pad; it enables actors to hone their acting chops.

Now and then, the studios make dubious casting decisions that the fans can’t fathom. Whether it’s about the actor’s star power or it comes down to a poor bet on the part of a director, in some cases, a different performer would have been a better choice.

But there are others who perfectly embody of their characters, and we have a list of ten of them right here! Don't worry, there’s no mention of Robert Downey, Jr., who is basically a real-life Tony Stark.

Patrick Stewart as Charles Xavier/Professor X

There are few mentor characters out there who can hold a candle to the X-Men's Professor X. More than just a commanding presence (despite his disability), he’s also one of Marvel Comics’ most powerful telepaths. The role of Charles Xavier demanded an actor who’d proved himself time and time again in a wide range of roles. And what better actor could there be than Patrick Stewart?

With gravitas, grace, and strength, Stewart has appeared in 5 X-Men films to date, not counting three additional non-credited appearances. And he owns the role each and every time. If anything negative can be said about the character, everyone knows it’s the fault of the script.

Sure, James McAvoy also looks great without hair. But we can all agree that Patrick Stewart is the definitive Professor X.