This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Gud-elim (Akkadian)
In Akkadian, he is also called Gud-elim, or "The Horned Bull". It was depicted as winged bulls or lions; both forms had the heads of human males. In the Sumerian myth, Angim or "Ninurta's return to Nippur", the god "brought forth the Bison (gud-alim) from his battle dust" and "hung the Bison on the beam".
In ancient Mesopotamian mythological in artistic representation from the earliest (late Uruk period) times with the arms, torso and head of a human and the ears, horns and hindquarters of a bull. He is portrayed as walking upright and characterized as a door keeper to protect the inhabitants from malevolent intruders.