From The Writer Of MAN OF STEEL!! What Make The Critics Of Syfy’s SUPERMAN Prequel KRYPTON?? Read the full article on AICN I am – Hercules!! The latest from writer-producer David Goyer (“Man of Steel,” NBC’s “Constantine”), “Krypton” looks at what Superman’s grandpapa was up to as a young man on Kal-El’s yet-to-explode home planet. Entertainment Weekly says: C-minus … just seems boring and a little cheesy.