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