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