Anshar

Anshar is the chaotic god of the Caveman pantheon.

Encyclopedia entry

A primordial Babylonian-Akkadian deity, Anshar is mentioned
in the Babylonian creation epic _Enuma Elish_ as one of a
pair of offspring (with Kishar) of Lahmu and Lahamu.  Anshar
is linked with heaven while Kishar is identified with earth.
   [ Encyclopedia of Gods, by Michael Jordan ]