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