Are there superheroes in real life?

Question

Where is "The Royal Tennis Court", a "real tennis" court built for Henry VIII of England who played there from 1528, that is still home to an active "real tennis" club?

Answer 1

Yes why not -
Sometime your mother or father are superheros
Sometime the firefighters when one is struggling in the fire
Sometime defence personal who make sure your borders are secure
Sometime a stranger who helps you when you are in needs.

So in short definition of superheroes changes when context changes and there many be many of such superheroes based on the context. I hope this helps.