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