Marvel Crisis Protocol - Lizard & KravenDoctor Curtis Connors, former genetic biologist and mentor to Peter Parker, was determined to use reptile DNA to regrow lost limbs, including his own missing arm. By experimenting with a new serum, Connors underwent a drastic transformation into the inhuman reptilian creature, Lizard. Meanwhile, skilled big game hunter Sergei Kravinoff, also known as Kraven the Hunter, relentlessly pursues the ultimate prize of capturing Spider Man to prove his