Biography:William Louis Wallace (born December 1, 1945) is an American karateka and former professional kickboxer. He is known for his adept use of high-speed leg kicks, earning him the nickname "Superfoot." He was the Professional Karate Association (PKA) World Full-Contact Champion, and the Middleweight Kickboxing Champion for six years, retiring with a 23-0-0 record. Description above from the Wikipedia article Bill Wallace (martial artist), licensed under CC-BY-SA, full list of contributors on Wikipedia.