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