Niddhogr

Level 1 of the Dungeon
(0, 0, D:1)
  a potion of invisibility
(5, -3, D:1)
  a leopard gecko skeleton
(13, 34, D:1)
  71 stones
(15, 12, D:1)
  a +0 club
  a goblin skeleton
(17, 26, D:1)
  a +0 robe