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