In Mesopotamian myth, the Scorpion men or Girtablili are attendants of the god Samas or Utu. They are shown with a horned cap of divinity, a human bearded head, the hindquarters and talons of a bird, a snake-headed penis and a scorpion’s tail, raised to sting. A Scorpion man was also attendant upon Tiamat, the great Babylonian goddess of creation. Scorpion men and women guard the gate of mount Masu where the sun arises. Scorpion people frequently appear on Assyrian instructions against psychic attack.
John and Caitlin Matthews, The Element Encyclopaedia of Magical Creatures, 2013, Scorpion man, p 406-7