I've always loved the character of superheroes over supervillains. Obviously villains do get more more leeway to commit various shenanigans and often have better outfits/catchphrases/humor potential. But heroes are people who take it upon themselves to protect and help people without necessarily bringing attention to themselves (Iron Man excluded).
Heroes like Batman, Superman, Gru, and Spiderman are loved because of their humanity...they have to make the tough choice of doing what they want and doing what is right. When it comes down to it, the hero is the one who makes the right choice. (Or in some cases who makes it work so that they get both)
As the great hero Obi-Wan Kenobi once said: "I have the (moral) [ed.] high ground."
If I were a specific superhero, I'd be Spiderman. My theme song would be I Fight Dragons covering The Ramones' Spiderman theme. And this would be my line: