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