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