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