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