There are plenty of examples. This is one of the reasons why I actually like the X-Men movies a lot (at least the 1st ones), while I hate most superhero movies

There are plenty of examples. This is one of the reasons why I actually like the X-Men movies a lot (at least the 1st ones), while I hate most superhero movies. I find the character of Magneto, with his backstory and his relationship with Xavier really interesting.