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