Superheroes and supervillains with various superpowers or extraordinary skills/traits.
Alternate name: Supervillain theme
The first video game about Superhero theme was released in 1978.
Also includes common people wanting to be superheroes, dressing up as such, collecting memorabilia of them, and generally involving anything related to superheroes/-villains. This allows things like Kick-Ass, Batman, and others to be included.
See also: superhuman powers