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 personality, God (referred to by the former as simply "the voice"), is trying to break Dog free of Elijah's grasp.

The "Dog" personality can be triggered by the sound of Father Elijah's voice, and the "God" personality is triggered by the sound of his own voice (via holotape or radio). When one personality is dominant, the other is said to be in "the cage" or "the basement."

Prologue
The origins of Dog/God (let alone his actual name) prior to Unity are unknown. What is known is that he was a member of the Master's elite Nightkin. Like the rest of the mutant army he was psychically linked to the Master and conditioned to slavishly serve him until death. Its several dominant personalities controlling his every action. With the destruction of the Mariposa Military Base, then the Cathedral, and the subsequent loss of connection to the commanders his grip on reality broke and the two personalities would emerge.

The one personality is Dog. The slavish, childlike character of pure instinct. Built from the conditioning the Master bred its army with. The other God, the subconscious voice of reason. As the years went by the Dog personality would constantly get into trouble. Wandering, eating, and listening to those he shouldn't. His ravenous hunger can only be described as gluttonous. Once he started to feed, anyone and anything that Dog hunted would be crushed, mangled and twisted until he is satiated. An act of uncontrolled greed. He knew that he was doing wrong but simply could't help himself. Eventually the voice of reason couldn't stand the constant self imperilment, nor the cannibalism, and began to emerge to counter Dog. Dog in response began self mutilation. Eventually going so far as to carve the name Elijah gave him on his chest to remind himself who he is. The pain serving to stifle the "other voice." However as time passed the other voice became stronger and stronger, consequently it took more and more pain to stifle the God personality.

Dog's hunger would always drive him to the surface when the hunger was satiated and/or fatigue set in, God would emerge. While Dog is unaware that the God personality is actually a part of him, he refers to the personality as climbing into his head and constantly being mean to him. Misinterpreting God's attempt at protecting him from harm by locking Dog in places. Despite this God continues to try to protect Dog, seeing him as his younger sibling. Both personalities would grow to resent the suppression of the other being in control. Each referring to the other putting them in the cage, or the basement. While in the cage each personality would only perceive glimpses of the others actions. This has had the effect of allowing the personalities to keep secrets from each other. This however is both a "gift" and a curse, for while it helps keep strategic ignorance it only exacerbates the animosity between the two.

Although God likes to think that he was the original personality he is completely unsure. For while he is in control he both refers to the body as a "shell" and that it is hard to fight in. Perhaps a consequence of God being the culmination of the self preservation and reasoning instincts. Calm, articulate, and controlling God seeks to eliminate Elijah to free himself from the need for a master and to eliminate his greedy ravenous hunger. In contrast Dog seeks to eliminate the God personality so that he may become pure instinct, and gorge on his master's affection and to his contentment on food. As such God has developed a hatred for greed, one that neither could hide the bloodlust. Whether it's Elijah's, Dean Domino's, or the Courier's.

Quests

 * Find Collar 8: "Dog": The Courier has to travel to the Villa police station and recruit Dog or God.
 * Fires in the Sky: The Courier has to escort Dog or God to Salida del Sol South to Trigger the Gala Event and hunt down some ghost people for Dog or God to eat.
 * Put the Beast Down: The Courier must confront Dog or God in the Sierra Madre Casino & Resort.

Other interactions
After recruiting Dog and watching him kill and consume one of the ghost people, the Courier can talk to Dog and, after going through a few speech options, receive the Ghost Hunter perk from him. However, if they have the Cannibal perk, it is possible to get the Ghost Hunter perk from him without fighting.

Inventory
Much like Lily Bowen, Dog and God are limited in the weapons they can use. These weapons are:

Since Dog/God cannot equip any weapons unique to Dead Money and outside weapons cannot be brought into the Sierra Madre, Dog/God are effectively restricted to Unarmed fighting, frag grenades, and the sledgehammer.

Appearances
Dog and God appear only in the Fallout: New Vegas add-on, Dead Money.

Bugs

 * The dialogue options "Who's this old man that brought us here?", "So you're the one that knows how I got to the villa", "You Brought Me Here to the villa", and "I want to know more about the man who brought us here" remain highlighted even if you have selected them.
 * Sometimes, when clearing out Salida del Sol North with Dog/God, he will fall through the floor and be suspended underneath it.
 * Sometimes Dog/God may be unable to heal when idle or given stimpaks.
 * Sometimes when he is ordered to wait, Dog/God will attack the first ghost person he can find before waiting.
 * There is an exploitable bug where you can obtain God's perk without him following you. By having God as a companion, use Elijah's voice to summon Dog's persona. This is only temporary, however; as soon as you dismiss him at his post for Fires in the Sky, this perk will be lost.
 * Dog/God is prone to getting stuck in walls around the villa and may be unable to follow the player in the same cell.
 * Sometimes Dog will bug and repeat the phrase "Let Dog out. Hungry, hate being in here" after you have brought him to the fountain. This is because the game still thinks Dog is in the cage at the police station due to the result of buggy dialogue options when you are convincing him to leave the cage.
 * FIX: If updating the game or returning to a previous save is not an option, the console is the only solution. Go to Dog and open the console, then click him. Remember the first two digits of the number at the top then type set . Replace XX with the two digits from before.