Fallout Wiki
Fallout Wiki
Gameplay articles
Fallout 2Robodog
Fallout: New VegasCyberdog
Old World BluesGabe

Cyberdogs, also called cyberhounds, are mechanically enhanced dogs found in the wasteland.


Technologically advanced organizations such as the pre-War United States government, the Enclave and Big MT developed the creatures. Big MT created weapons like the K9000 cyberdog gun which used a dog’s brain as its central processor and could sniff out and lock onto targets.[1][2] Denver in particular had a large supply of cyber police dogs, and they still roam the streets.[3]


Cyberdogs are also called "K-9 units." They are not affected by pulse weapons. Their brains are subject to neural degeneration, but can be swapped out. If cyberdogs die, it is possible for them to be reconstructed or fixed, as seen in one of Roxie's endings.[4] Cyberdog models include Mk. II and III, differing in appearance. Unique models include K-9 and Gabe.[5] K-9 was created by the Dr. Schreber in the Enclave outpost of Navarro and based on the "Cyberhound Mk II personal security model."[6]



Macybraa se.gif
Gameplay article: Fallout 2

Robodog is a cyberdog, more specifically "Cyber-Hound Mk II personal security model." Dr. Henry brought it from the Enclave Oil Rig and settled down in the NCR.[6][7]


Gameplay article: Old World Blues

The military cyberdog has a sonic bark used as a weapon, and has a chance to knock down the player character with its melee attack. They also appear to have the ability to repair themselves.


Gameplay article: Old World Blues

A slightly weaker variety of the military cyberdog. They can be distinguished from military cyberdogs by their black and white paint, as well as the red and blue reflective patches on their backs.

Named cyberdogs


In the quest Nothin' But a Hound Dog, the Courier must locate a replacement for the deteriorating brain installed in the cyberdog Rex.


Cyberdogs appear in Fallout 2, Fallout: New Vegas and the Fallout: New Vegas add-on Old World Blues.



  1. X-13 research facility terminal entries, terminal, Check out this mod I've been working on!
  2. Old World Blues endings, X-8 Research Center: "As the Courier ran through the X-8 facility multiple times, the computers analyzed the test subject's movements. Rather than performing a superficial observation, they realized the subject barely knew what Communism was - or even what a high school was. This confused them for a time, until the facility finally realized that its research had... succeeded. So it let its Cyberdogs out into the wastes to help protect small communities from physical aggression rather than communist propaganda."
  3. The Courier: "They have cyber-dogs in Denver?"
    Antony: "Not too common but you still see 'em around."
    The Courier: "I could use Lupa's brain to fix my cyber-dog."
    Antony: "Cyber-dog? Like the ones I've seen up in Denver? I know what you're talking about, and it would make Lupa immortal in a way."
    Antony: "The mechanical dog you have with you - where did you get it?"
    The Courier: "Rex? I picked him up in New Vegas."
    Antony: "Oh? Such things are common in Denver, but I didn't know that other cities had them as well."
    (Antony's dialogue)
  4. Old World Blues endings, Roxie: "There, she ran across the corpse of Rex. She dragged him back to the Big Empty and had him rebuilt for company."
  5. K-9's character description: "{100}{}{You see a cyberdog.}"
    "{101}{}{You see K-9.}"
    "{102}{}{You see a cyberdog. It is part machine and part dog.}"
  6. 6.0 6.1 The Chosen One: "{135}{}{What's in it for me?}"
    Henry: "{136}{}{You'll be participating in an important experiment, in fact, the most important, scientific-oh, you mean money. Well, I do have a Cyber-Hound Mk. II, Personal Security Model, that I brought with me. I suppose I could have it activated and on-line by the time you got back. Would that do?}"
  7. Robodog's character description: "{100}{}{You see a strange half-dog, half-metal thing. It appears to be activated.}"
    "{101}{}{It's Robodog! Everybody's favorite pet!}"
    "{102}{}{Either this thing is some horrible stitched together combination of dog and machine or it's all machine, cunningly done to look like a dog. It's hard to tell.}"