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