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