Protectron (Fallout 3)

Protectrons are a type of robot encountered in the Capital Wasteland in 2277.

Background
Many protectrons were commissioned by the U.S. Army before the Great War. They are painted a dark olive drab with a white star on their chest. These mechanized soldiers still wander the wastes, attacking everything from radroaches to Brotherhood Outcasts. Interestingly, the Brotherhood Outcasts use their own protectrons which are painted in rust and black. The Pitt adds a new variety of protectron called the "factory protectron", which lacks a glass dome but possesses a single ocular lens, and a cage around the combat inhibitor. The top of where the dome would be appears to be made to look like a construction hard-hat and the body has a yellow coloration. Broken Steel adds "Enclave protectrons", which appear to be much newer, with red glass domes and a polished steel-gray finish. A special red-painted protectron appears at the House of Wares in Point Lookout.

Protectrons in various areas have been programmed differently; the protectrons in the Nuka-Cola plant for example, mention that they are operating under the authority of the Nuka-Cola Corporation as they attack you, with the words "Nuka-Cola!" being dubbed in from an exterior source. Other protectrons have even been supplied with sophisticated personalities, such as Button Gwinnett and Dean Dewey.

A protectron with the basic personality loaded can execute "sequences", lists of tasks to complete, such as patrolling an area for intruders. Some sequences may have been added by RobCo Industries, while others were written by robotics technicians at the locations where they are used. When not in use, a protectron unit is stored in a base pod, which also charges its battery. The protectron is connected to its base pod via radio uplink, and the pod is in turn linked to a control terminal or computer system.

Specifications
Protectrons have a glass dome on top of their heads that acts as an ocular lens that allows the protectron to scan its surroundings and act accordingly. In this glass dome is a laser emitter that shoots a high-powered laser. This laser is also in both "hands/claws". The body of a protectron can swivel up to about 90 degrees to either side before having to step into a different position.

All protectrons come with a combat inhibitor mounted on their back that allows them to selectively target opponents. The combat inhibitor is generally left exposed, making it easy to disable when approaching a protectron from behind. When the combat inhibitor is crippled, the robot will fly into a frenzy, automatically targeting the nearest possible target, regardless of any previous affiliation.

Gameplay atrributes
All protectrons have three laser weapons: one in each arm and another in their domed head. Due to it being similar to a laser pistol, they are ineffective at long-range attacks. Like most robots in Fallout 3, the protectron has a combat inhibitor on its back. Crippling this part of the robot will cause it to frenzy and start attacking any nearby creature regardless of affiliation. This condition will persist until the robot is disabled or destroyed.

Protectron
These may be found roaming many parts of the wasteland. The player's first encounter with one may be Deputy Weld outside Megaton, but they will be found in many other places. Protectron carcasses are not uncommon, as robots will frequently attack stronger non-player characters, often with fatal consequences to themselves.

Metro protectron
Metro protectrons are protectrons found in many metro stations. When approached, they will ask for a metro ticket from the player. If the player possesses a ticket, then it will be automatically removed from their inventory. If the player does not possess a ticket, the protectron will instead turn hostile. When presented with a ticket, the protectron will remain friendly, continuing to walk around the metro station and attacking any enemies. These potential targets include a variety of common hostile creatures such as raiders, feral ghouls, super mutants, and so on. Metro protectrons have the same stats as the standard Protectrons, despite their mundane functions.

Nuka-Cola security
This model of protectron is only found on the Nuka-Cola plant's factory floor. They are easily identified due to their distinctive color scheme, possessing a red border around their head and hands, with the logo of the Nuka-Cola Corporation emblazoned on their body. Due to their role as guards, they will attack any perceived trespassers on sight. When attacking the player, they may occasionally shout "Nuka Cola!". In Fallout: New Vegas you can find an inactive Nuka-Cola protectron in Mr. House's penthouse next to the bed on the higher level.

Factory protectron
This model of protectron can be found in the Nuka-Cola plant's storage and mixing vats room, along with a nukalurk. It is located in a holding pod and can be activated by a nearby terminal. If activated, it will then begin to patrol the room, confused but friendly. The factory protectron will request to see the player's office ID, and if the player does not have an ID in their inventory the Protectron will become hostile. If an ID card has been acquired then the Protectron will remain friendly towards the player, and will attack the Nukalurks.

Maintenance protectron
This protectron only appears during the quest Reilly's Rangers, found in a storage room of the Statesman Hotel's restaurant in a deactivated state. Once the Lone Wanderer's reached the roof, Butcher will ask you for its fission battery to be retrieved, so it can be used to repair the broken elevator.

Backup protection unit
A one of a kind named protectron model, which is locked up in a holding pod in the National Archives' Archival Strongroom. The player will encounter it (and be able to activate it) during the last part of the quest Stealing Independence, just before going back up again by elevator. It has the same appearance as Button Gwinnett, most likely because this robot was in standby in case Button Gwinnett broke down. Once activated it will walk around, and remain friendly.

Outcast protectron
This protectron model has been reprogrammed by the Brotherhood Outcasts, and is generally found being used as a sentry or to supplement Outcast patrols. One can be found patrolling the overpass bridge near Fort Independence, while others may be randomly encountered with Brotherhood Outcast patrols near Vault 101 or the Scrapyard. Outcast protectrons do not have the blue color of the common protectron, nor the typical Outcast red paint job, but are instead decorated with a rusty, brownish color. They will sometimes refrain from assisting other Outcasts, such as during the Raider attack on Fort Independence.

Notable protectrons

 * Button Gwinnett
 * Dean Dewey
 * Deputy Weld
 * Shakes
 * Thomas Jefferson

Appearances
Protectrons appear in Fallout 3.

Behind the scenes
Protectrons are modeled after Robby the Robot from the 1956 sci-fi movie, Forbidden Planet.

Bugs

 * Protectrons are known to have physics glitches when laying dead in ragdoll mode, specifically when transiting from a cell via doorway into one with a dead protectron in it, or when loading a saved game with a dead protectron in the vicinity. When this happens, they get flung high into the air, or will jiggle as if being electrocuted.
 * Sometimes protectrons are rendered as allies, but will attack on sight. Sometimes the compass will still render the protectron "allies", until you kill or knock them down.
 * Sometimes a protectron will literally fall out of the sky to be crippled on impact.

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