Booster Gold has one of my favorite superhero origins. He was a football star in the future, got caught up in some family stuff and wound up getting banned for betting or shaving points. He ended up as a security guard in in a superhero museum and got inspired. He decided to steal some heroes gear from the exhibits, go back in time and become a (famous, importantly) superhero himself.
So you have this guy who really does have a good heart, but he's still always trying to be famous and stuff. He's kind of considered a bit of a joke, due to him always doing stuff like getting sponsored and being on ads for toothpaste, and also because he and Blue Beetle are always being Psych-level silly, but they do interesting stuff with his character.