Have always thought superheros were major nerd shit, the only ones I know are the obvious Batman, Superman, Spider-Man types and I don’t like any of it. The dark knight movie was good, that’s all I’ve ever seen though. The Joker movie was very good too, but those are like, cultural movies that are bigger than just the “superhero” thing I feel.
The Grinch was a pretty good fictional character if I had to go in like a somewhat adjacent realm. If you opened this up to like tv show fictional you can get into like Walter White or Omar from the wire etc. Loved Harry Potter books and movies too but Idek who my favorite character would’ve been really. I guess like maybe Ragnar from Vikings or Uhtred from last kingdom would be like “fictional” characters loosely based off a real historical figure that I personally identified with more. Probably the best I’ve got here