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