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