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