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