I had a friend who was constantly amused that the most common "origin" for the Legion of Superheroes was "being from somewhere else"... that they were basically just normal citizens on their own planet, but by deciding to put on tights and hang around Earth, now they're superheroes.
Duo Damsel particularly tickled him, since due to her being from a planet where everyone splits into three, she's actually handicapped where she comes from, but a superhero as far as the Legion classifies it.