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