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