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