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