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This is an overview article which contains background information and cross-game comparisons. For game-specific information and stats, see the articles linked on the right.
Gameplay articles
Fallout 3Protectron
Military protectron
Factory protectron
Maintenance protectron
Metro protectron
Nuka-Cola security
Outcast Protectron
Enclave protectron
Factory protectron Gametitle-FO3 TP
Fallout: New VegasProtectron
Shipping worker
Sunset Sarsaparilla security
Protectron Mark series Gametitle-FNV OWB
Protectron target drone Gametitle-FNV OWB
Icon cut ProtectronBlue Gametitle-FNV OWB
Fallout 4Protectron
Protectron medic
Protectron fire brigadier
Protectron watcher
Utility protectron
Police protectron
Protectron guardian
Protectron devil Gametitle-FO4 AUT
Protectron scourge Gametitle-FO4 AUT
Doom protectron Gametitle-FO4 AUT
Protectron basilisk Gametitle-FO4 AUT
Protectron golem Gametitle-FO4 AUT
Nukatron Gametitle-FO4 NW
Galactron Gametitle-FO4 NW
Gunner protectron chef Gametitle-FO4 NW
Gunner protectron Gametitle-FO4 NW
Icon cut Protectron sheriff Gametitle-FO4 NW
Fallout 76Protectron
Camden Park security
Operations director
Protectron watcher
Protectron guardian
Medical protectron
Police protectron
Utility protectron
Protectron fire brigadier
Protectron butler
Protectron chef
Communist sympathizer
Confederate soldier
Union soldier
General's Steak House protectron
Penitentiary guard
Red Rocket protectron
Responder protectron
Whitespring protectrons
Protectron Watoga government worker
Protectron strikebreaker
Insult bot Gametitle-FO76 WA
Eta Psi protectron Gametitle-FO76 WA
Arktos Pharma protectron Gametitle-FO76 WA
Gametitle-FO3Gametitle-FO3 TPGametitle-FNVGametitle-FNV OWBGametitle-FO4Gametitle-FO4 AUT
Gametitle-FO3Gametitle-FO3 TPGametitle-FNVGametitle-FNV OWBGametitle-FO4Gametitle-FO4 AUTGametitle-FO4 NWGametitle-FO76
The sturdy Protectron model of robot was created before the great war, and served as a security automaton in both the private and business sectors.Fallout 3 loading screen

Protectrons are a model of robot which appears in Fallout 3, Fallout: New Vegas, Fallout 4 and Fallout 76.


One of the most widespread and popular models in RobCo Industries' catalogue. The protectron was designed as an inexpensive work drone, capable of performing a wide variety of tasks from construction, through security, to office duties.[1] Produced from at least 2063, it's a compact, bipedal work drone with a pair of manipulators and integrated lasers for self-defense.[2] The large dome contains the primary optic sensors (usually three) and the central processing unit that contains the robot's synthetic personality. For ease of maintenance, the protectron is typically powered by a fission battery.[3][4] As it was not intended for combat, at least not as a direct combatant, the Protectron only has a thin alloyed shell meant to protect its internal components from the environment and damage that could be sustained in the course of its duties. However, the internal temperature of certain Protectrons can reach up to 1000 degrees for cooking foods, giving them extreme internal heat resistance.[5] The head assembly is typically shielded by a semi-transparent or opaque dome from reinforced glass. Although various hardware modifications were introduced before the war to enhance its effectiveness.[6][7]

Numerous variants of the protectron were available on the market, due to its reliability and flexibility. Apart from the standard body, RobCo also offered construction drones with a shielded, reinforced head, emergency light, and internal power tools like nailguns.[8] Firefighter models with an internal cryo gun for fire suppression and additional protection from fire and debris.[9] Medic units with built-in defibrillators and[10] reinforced police models with tasers, stronger servomotors, and armored heads.[11] Even factory models could be customized with a variety of software and synthetic personalities to enhance its performance. This ability to customize made it a popular choice for both the private and public sectors.[12] These included the R04 V9 "Office Helper" personality[13] with integrated office protocols and scheduling software,[14] RS3 V4.1.6 "Utility Helper"[15] with remote maintenance routine download capability[16] and pest extermination programs,[17] and the RX2 V1.16.4 "Vault Helper",[18] with all the necessary Vault protocols.[19] Protectrons usually came with a special pod, for storage, maintenance, and recharging,[20] and the Standard Protectron Control Interface v2.40 installed on terminals connected to the pod and responsible for controlling protectrons slaved to it.[21]

The introduction of the protectron harmfully affected the situation of workers in the United States. The efficiency and reliability of the protectron made it a fantastic, tireless laborer[22] easily displacing blue-collar workers, even in industries not affected by the ongoing war. Although companies would deny that the introduction of robotic workers was meant to replace human workers,[23] the reality was that any company where protectrons or other robots were introduced would soon see mass layoffs.[24] In one particular instance, a Pittsburgh steel mill decided to lay off all of its workers[25] citing budget cuts and the need to shut the plant down. When the workers started an occupation strike,[26] the company simply allowed the new protectron fleet to enter the facility and gun down the striking workers down to the last man.[27][28]




In Fallout 3, Fallout: New Vegas and Fallout 4, protectrons are the second-weakest robot variant encountered, with only eyebots having less firepower. They do not pose much of a threat due to their weaker weaponry and slow speed. They are equipped with dual hand-lasers as well as a head-laser so that if one weapon is disabled, the protectron can still function in battle. They are not as common in Fallout: New Vegas as they are in Fallout 3; they are in every metro station in the latter, whereas in Fallout: New Vegas, they are mostly found patrolling a few office buildings and the securitron vault.

Factory protectronEdit

Gameplay article: Fallout 3

Factory protectrons are protectrons designed for use as manual labor inside of factories. A terminal inside Sunset Sarsaparilla headquarters in Fallout: New Vegas mention robots being shipped to the factory to replace the human workers.[29] In Fallout 3, a few examples of these protectrons can be found inside the Mill in The Pitt, although they are already deactivated.

Metro protectronEdit

Gameplay article: Fallout 3

Metro protectrons are a model of protectron found in Washington, D.C.'s metro stations that will ask for a passing person's metro ticket when activated, which will be removed from the inventory. Without a ticket, the protectron will attack.

Nuka-Cola securityEdit

Nuka protectron
Gameplay article: Fallout 3

Nuka-Cola security protectrons are found in the Nuka-Cola plant. They have the Nuka-Cola Corporation logo on them as well as red coloring around their head and hands. A deactivated one is found in Fallout: New Vegas, in the Lucky 38 penthouse.

Outcast protectronEdit

Outcast protectron
Gameplay article: Fallout 3

Outcast protectrons are protectrons reprogrammed by the Brotherhood Outcasts. They are found patrolling with Outcast patrols or outside of their bases.

Factory protectron (The Pitt)Edit

FO3TP Factory Protectron
Gameplay article: The Pitt

These factory protectrons are found in the Pitt steelyard and were being used as a replacement for human labor within the steel mills. They are heavy-duty industrial robots, featuring a reinforced "head" part, a protective cage on the back, and distinctive yellow coloring.

Shipping workerEdit

Gameplay article: Fallout: New Vegas

Shipping workers are protectrons found in the Sunset Sarsaparilla headquarters. There are only two of them, and they can be found on the bottom floor of the factory with the bottle cap press machine.

Sunset Sarsaparilla securityEdit

Gameplay article: Fallout: New Vegas

Sunset Sarsaparilla security protectrons are a slightly tougher variant of the standard protectron. There are still three functioning which can be found patrolling inside the Sunset Sarsaparilla headquarters. Their function was to protect the factory against possible threats. Several disabled models can also be found within the factory and scavenged for parts.

Protectron Mark seriesEdit

Protectron blue
Gameplay article: Old World Blues

The protectron Mark series was an attempt by scientists in Big MT to improve on the base model of protectron built by RobCo. These protectrons come in six versions, Marks I-VI. Mark I is on par with the protectrons found in the Sunset Sarsaparilla headquarters, while the other marks are scaled on increasing durability based on the player character's level. However, the firepower on each Mark series is the same.

Notable protectronsEdit


Behind the scenesEdit

50 Vault-Tec C.E.O.The following is based on unverified behind the scenes information and has not been confirmed by canon sources.

The protectron's design seems to be inspired by Robby the Robot, a robot that first appeared in the 1956 sci-fi film The Forbidden Planet and appeared in numerous movies, television shows, and commercials afterward.

50 Vault-Tec C.E.O.End of information based on unverified behind the scenes information.


  1. Fallout 4 loading screens: "The RobCo protectron was constructed for a multitude of civil service applications, from security to firefighting."
  2. The Wastelad video game was first published in 2063 and features malfunctioning protectrons as enemies
  3. The Courier: "The display case is empty. The gun's missing."
    Primm Slim: "Have you gone loco, pardner? I can see the gun with my own three photo sensors from where I'm standing right now. [You hear strange sounds coming from Primm Slim. He may be trying to read a corrupted file, but it would take more science knowledge to be sure.]"
    (Primm Slim's dialogue)
  4. The Lone Wanderer: "Any clue where I can find a Fission Battery?"
    Butcher: "When we passed the maintenance room, I spied a deactivated Protectron inside. Just wrench open its access panel, and you'll find it."
    (Butcher's dialogue)
  5. General's Steak House protectron's dialogue: "My internal temperature is 1000 degrees. The perfect temperature for broiling steaks."
  6. Protectron appearance across the series.
  7. Fallout: New Vegas loading screens: "The sturdy Protectron model of robot was created before the great war, and served as a security automaton in both the private and business sectors."
  8. Fallout 4 loading screens: "The construction model of protectron was built to take damage. Some versions also come equipped with an internal nail gun, which they can utilize in combat."
  9. Fallout 4 loading screens: "The firefighter model of protectron is equipped with an internal cryo gun it can utilize in any combat situation."
  10. Fallout 4 loading screens: "The medic model of Protectron was designed to use its hands as a defibrillator. In combat, it utilizes this ability as a painful shock attack."
  11. Fallout 4 loading screens: "In combat, the police model of Protectron relies on strong melee attacks and a painful electric shock."
  12. Fallout: New Vegas loading screens: "The sturdy Protectron model of robot was created before the great war, and served as a security automaton in both the private and business sectors."
  13. Protectron: "Loading Personality: RobCo R04 V9 "Office Helper"..."
    (Protectron's dialogue (Fallout 3)) Note: OfficeRobotTalk
  14. Protectron: "Running default office protocol...ERROR. Loading daily agenda...ERROR." et al"
    (Protectron's dialogue (Fallout 3)) Note: OfficeRobotTalk
  15. Protectron: "Loading Personality: RobCo RS3 V4.1.6 "Utility Helper"..."
    (Protectron's dialogue (Fallout 3)) Note: UtilityRobotTalk
  16. Protectron: "Receiving Sewer Maintenance Routine. Please Hold. Link Terminated."
    (Protectron's dialogue (Fallout 3)) Note: UtilityRobotTalk
  17. Protectron: "Critter of unusual size detected. Running Program: Extermination."
    (Protectron's dialogue (Fallout 3)) Note: UtilityRobotTalk
  18. Protectron: "Loading Personality: RobCo RX2 V1.16.4 "Vault Helper"..."
    (Protectron's dialogue (Fallout 3)) Note: VaultRobotTalk
  19. Protectron: "Remote start activated, loading Vault protocols. Please hold."
    (Protectron's dialogue (Fallout 3)) Note: VaultRobotTalk
  20. Protectron pod appearance and placement context.
  21. Protectron terminal
  22. Supply plant terminal entries; terminal, Private Entry #2
  23. Supply plant terminal entries; terminal, Regarding New Protectrons
  24. Supply plant terminal entries; terminal, Private Entry #1
  25. Supply plant terminal entries; terminal, Private Entry #3
  26. Supply plant terminal entries; terminal, Private Entry #4
  27. Supply plant terminal entries; terminal, Private Entry #5
  28. Supply plant terminal entries; terminal, Private Entry #6
  29. Sunset Sarsaparilla headquarters terminal entries; Shipping terminal, Check message
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