The Mad Unicorn lizards - (Tyrannodon Monocornius) - are a species created when Dr. Llewellyn Van Scolex created a mutated reptile and left it alone. The creature escaped from his lab and mated with a native lizard, hatching two strange lizards with 15 cm horns, one male one female. Eventually they multiplied over the years creating a population of 22 million all over the state of Vantrapolis.