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