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