Superman: Kryptonite review. Classic Game Room presents a CGR Comics review of a book that challenges opinions of Superman. Darwyn Cooke and Tim Sale deliver a solid book that reminds you that Superman is just as human (or Kryptonian) as all of us. SUPERMAN: KRYPTONITE review features a look at the owl-like Lex Luthor and the pretentiousness of Lois Lane. Clark could just leave you, you know!