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