What type of "hero" would this be in fiction?
I mean like hero, antihero, etc.
Let's say this person has superpowers
They don't mind stopping a crime if they just so happen to run into one, and save people SOMETIMES, but not usually because they feel it's not really their job/responsibility to do such things. It's mainly just because they're nice. Being a superhero is not something they really think on.
When they do save someone, they immediately leave because they are reserved and don't really care about being friendly with you afterwards
They have no qualms at all about using their powers for personal gain, for example gaining money, or for self-entertainment.
They would step in to save the world if the whole world was being threatened