Thoth was originally the Egyptian god of knowledge. After the War of the Gods and creation of Chaos, Thoth knew the balance had to be maintained. If Chaos ever gets free, Thoth will be his first target.
Thoth has the head of a regal ibis and still wears his holy Egyptian garb. He has a smaller set of artifact scales that show him the position of the balance at any given time. Thoth also still carries his three books of knowledge and protects them at any cost.
Thoth created the Powermid that created Ankhforce. He also knows that the Earth is one of the great nexus points in the balance.
Links: True Gods