Spider-Man first appeared in the early 1960s, when teenagers in superhero comic books were usually relegated to the role of sidekick to the protagonist. The series featured Peter Parker, a high school student who frequently suffered the same rejection, inadequacy, and loneliness, that most young readers could easily relate to. Unlike some teen heroes, such as Bucky and Robin, Spider-Man never had any adult mentors like Captain America and Batman to teach him to be a superhero. He had to learn for himself that "with great power comes great responsibility" — a quote that he would cherish from his late Uncle Ben.