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