Dennis Brannigan was a university history professor and former intercollegiate champion, who believed that if a man were in reasonable shape, he could use math and science to win nearly any fight. To prove this, he began training to fight as a professional boxer under Jed Rogers, believing that he could become champion simply by applying a methodical strategy. Brannigan went on to defeat Tiger Tyrone and become the world champion. He travelled the world, defending his title while fighting evil outside the ring. He faced a number of unusual enemies including hypnotists and Captain Heroic.