By the age of 28, Richard Pesta had become independently wealthy thanks to a lucrative fiberglass and foam business. So he decided to fulfill his dream of being a superhero, and in 1973 he turned himself into Captain Sticky, "Supreme Commander in Chief of the World Organization Against Evil". The name referred to his fondness for peanut butter.
He drove around Orange County in his Stickymobile looking for crime, outfitted with a peanut butter gun and "peanut butter grenades" made of peanut butter, vinegar and alka seltzer.
He also became a fixture at San Diego Comic Con, and was constantly trying to get Marvel to make a comic book about him, but this never happened.
Apparently his superhero act wasn't entirely just a way to get attention. He used his influence to advocate for various causes such as improving nursing homes and preventing rental-car ripoffs.
He died in 2003 at the age of 57.
More info: Heroes in the Night
, News From Me
, Real Life Superheroes Archive
Captain Sticky with Stan Lee at San Diego Comic Con, 1975
The video below is in German, but it has some good footage of Captain Sticky in action.