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