Radioactive Man or Duff Man.
Bartman
Radioactive Man, with his sidekick Fallout Boy.
Bart has more than one superhero identity. Bart's superhero identities are Bartman Stretch-Dude (for a Halloween special) Cupcake Kid (sidekick of the Pie-Man) Bart reads Radioactive Man comics, and tried out to get a role as his sidekick, Fallout Boy, but he didn't get the part, and Radioactive Man is not his superhero persona.
Family Guy. The Simpsons.
is hawkeye a superhero
yes, he is a superhero
No, the word "superhero" does not have to be capitalized unless it is at the beginning of a sentence.
superhero
Superhero
Yes, Spawn is a superhero.
My Superhero was created in 1994.
My Superhero ended in 2003.