I recently was asked that question. Gramp came to mind immediately, then ... nothing.
After a *lot* of thought I wondered about Ron Santo. I certainly admire him. Being diagnosed with juvenile diabetes in the 1950's while playing minor league baseball. Keeping that a secret for fear of being thrown out of baseball throughout his entire major league baseball career. He earned 5 golden gloves and played in 9 all-star games. Now he raises millions of dollars to research a cure for diabetes. He lost both his legs to the disease, and all the while has kept a positive attitude. Also, he is the Cubs color commentator on the radio.
Yeah, I think I just talked myself into making him a hero of mine.
Hmm, I only have 2 heroes????
I think I should think this over some more.