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