The Super Soaker toy gun was on the top of nearly every kid's wish list in the '90s, and it made summer heat a literal blast. The game-changing toy has racked up more than $1-billion in sales. It was inducted into the National Toy Hall of Fame in 2015. The man who invented the Super Soaker is Lonnie Johnson. While the toy water gun may be Johnson's most widely known invention among consumers, he has made contributions to the world of nuclear and mechanical engineering far beyond pump action toy.