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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.— In-game description

Robodog is a cyberdog and companion in Fallout 2.


A cyberdog or "Cyber-Hound Mk. II, Personal Security Model" that belongs to Dr. Henry. As payment for assisting him with field work for the mutagenic serum as part of a quest, Henry activates the cyberdog for the Chosen One.[1]

Interactions with the player character

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This character is a permanent companion.


Primary Statistics
Statistic Stage 1 Stage 2 Stage 3 Stage 4
Strength 06 06 06 06
Perception 09 09 09 09
Endurance 08 08 08 08
Charisma 01 01 01 01
Intelligence 03 03 03 03
Agility 08 08 08 08
Luck 05 05 05 05
Secondary Statistics
Statistic Stage 1 Stage 2 Stage 3 Stage 4
Hit Points 107 117 127 137
Armor Class 18 18 18 18
Action Points 10 11 11 12
Carry Weight 175 175 175 175
Melee Damage 12 15 18 21
Damage Resistance 30% 30% 30% 30%
Poison Resistance 40% 40% 40% 40%
Radiation Resistance 16% 16% 16% 16%
Sequence 18 18 18 18
Healing Rate 2 2 2 2
Critical Chance 17% 22% 25% 30%
+ Tagged Skills Stage 1 Stage 2 Stage 3 Stage 4
Unarmed 115% 120% 125% 130%


His stats are inferior to the other cyberdog, K-9.


Robodog appears only in Fallout 2.

Behind the scenes

According to the Fallout Bible, at some point after the destruction of Control station Enclave, Henry attempted to destroy a cyberdog named K-9 who was in Dorothy's care, fearing that too much information about the Enclave could be obtained from it.[Non-canon 1]


  1. Henry: "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?"
    (Dr. Henry's dialogue)


  1. Fallout Bible, K-9 (from Navarro): "After getting his motivator repaired, K-9 was left in NCR by the Chosen One so that he could receive necessary repairs from Dorothy and, not long after his recovery, Dr. Henry (who had been placed in critical condition after being reportedly assaulted by the Chosen One some time earlier). Dr. Henry, afraid that too much information about the Enclave would be obtained from K-9, attempted to destroy the cyborg, but was stopped by cyberdog and Dorothy, who suspected what Dr. Henry was planning. The NCR government used the attack as an excuse to confiscate K-9 and cyberdog in order to learn more information about the Enclave as well as what makes the two of them "tick." At last report (and over Dorothy's objections), K-9 and cyberdog were disassembled and analyzed. Structural damage during the disassembling is reported to have killed them both."