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