What is "kusarikku"

Kusarikku, “Bull-Man” sometimes inscribed GUD.DUMU.UTU, GUD. DUMU.AN.NA and sometimes phonetically ku-sa-rik-ku(m), synonymous with the Sumerian GU/gud-alim and perhaps also alim (see below for caveat), was an ancient Mesopotamian mythological demon shown in artistic representation from the earliest (late Uruk) times with a human head, arms, and torso, and bovine hindquarters. He is portrayed as walking upright and characterized as a door keeper to protect the inhabitants from malevolent intruders. He is one of the demons which represented mountains. He is pictured in late iconography holding a banduddû, “bucket.” On a stela of Meli-Šipak, the land grant to Ḫasardu kudurru, he is pictured carrying a spade.