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