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