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