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