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