Meaning
A person in a superhero costume with a flowing cape, often with a mask or an emblem on the chest. This is the gender-neutral version; man and woman versions also exist, and all three come in several skin tones.
It is used for comics and films, but even more for thanking someone who saved the day, like a friend who brought a charger or covered a shift. Example: “You brought snacks to the exam, you are my hero 🦸”