Do you want to compare Radioactive Man with Mephisto? Discover the powers, weakness & weapons of Radioactive Man and Mephisto from Radioactive Man Biography and Mephisto Biography. Find out all about Radioactive Man and Mephisto.# Check out how is Radioactive Man unique and distinct from Mephisto. Discover their love interest, sidekicks, family tree and the movies and games list in which Radioactive Man and Mephisto have appeared. Find out everything about them here!