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