I consider heroes to be people who perform deeds for the public good over an extended period of time, despite personal material loss.
Three such people that come to mind are:
Gandhi
Mother Theresa
Professor Fred Hollows - If you haven't heard of him - From wikipaedia -Frederick "Fred" Cossom Hollows, AC (9 April 1929 – 10 February 1993) was an ophthalmologist who became known for his work in restoring eyesight for countless thousands of people in Australia and many other countries. It has been estimated that more than one million people in the world can see today because of initiatives instigated by Hollows, the most notable example being The Fred Hollows Foundation.
Robert Gassin
Melbourne ShorinjiKempo Branch
Australia
"Never fight an idiot. He'll bring you down to his level and then beat you with experience"