Apsu

Tiamat, the female dragon, is more powerful than her husband Apsu, who is slain by his son Ea.

Apsu was still powerful and fierce, and Tiamat snarled and raised tempests, smiting herself.

He uttered a pure incantation and accomplished the downfall of Apsu and Mummu, who were taken captive.

Timat's wrath was roused by Apsu, who had proposed to slay the gods, her children.

Its measurement from one end to the other cannot exceed the width of the Apsu, nor can it be any narrower.