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