God is the omnipresent deity, Father of Jesus Christ and as the Creator of life, a central part of that religion's basic tenants in the religion of Christianity. Although the basic concept of God exists in other monotheistic and polytheistic religions, it is the Christian God that serves as the basis for the American Dad! character.
The appearance of the "God" character is the traditional depiction of the Abrahamic God in the Western world: a white-haired Caucasian man wearing a white robe.
God asks George Bush to downplay their relationship in the Pilot episode of American Dad.