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