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