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