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