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