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