it's cool, you're not the first person here i've had to explain superheroes too.
a superhero is someone (usually with superpowers) who dresses up in a costume and uses a fake name and helps stop crime/fight bad guys (who also usually have superpowers).
no subject
a superhero is someone (usually with superpowers) who dresses up in a costume and uses a fake name and helps stop crime/fight bad guys (who also usually have superpowers).