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