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