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