Dog and God

Dog is a psychologically disturbed nightkin who helps Father Elijah by capturing "assistants" for him and fitting them with explosive collars in 2281. His alternate identity, God (referred to by the former as simply "the voice"), is trying to break Dog free of Elijah's grasp.

The "Dog" identity can be triggered by the sound of Father Elijah's voice, and the "God" identity is triggered by the sound of his own voice (via holotape or radio). When one is dominant, the other is said to be in "the cage" or "the basement." The two are never given a collective name, only referred to as their two names collectively.

Dog is the subservient identity who follows Elijah to give him orders like the Master did in his previous life, and God is the independent and intelligent identity that seeks to move on and be free from Elijah's exploitation of Dog's obedience.