Protectron (Fallout 3)

A Protectron is a pre-war robot type, seen in Fallout 3 and Fallout: New Vegas.

Background
Their primary function seems to be protection and security, though their secondary programming is very modular and they can do many things from being greeters, to ticket-takers and bartenders, to even functioning as celebrity/historical figure impersonators. They were created by the RobCo corporation.

Many Protectron robots were commissioned by the U.S. Army before the Great War. They are painted a dark olive drab with the Army's white star on their chest. These mechanized soldiers are still wandering the wastes, attacking everything from Radroaches to Brotherhood Outcasts. Interestingly, you will also see the Brotherhood Outcasts using their own Protectrons, which have a orange-and-black-flecked paint job. The Pitt adds a new variety of Protectron called the Factory Protectron, which lacks a glass dome but possesses a singular ocular lense, and a cage around the combat inhibitor. Broken Steel adds Enclave Protectrons, which appear to be much newer, with red glass domes and a steel-gray finish. A special red-painted Protectron appears in the House of Wares in Point Lookout.

Many Protectrons in various areas have been programmed differently; the Protectrons within the Nuka-Cola Factory, 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 or Deputy Weld, but these are the exception rather than the rule.

Characteristics
Protectrons are one of the weaker robots in Fallout 3 and can be destroyed with most mid-level weapons or explosives (such as grenades). Despite being somewhat more durable than the typical raider, their poor armor means their lifespan is likely to be quite short.

They have three laser weapons built into their frame, one in each arm and another one in their head. They are hardly the best shots, although sustained fire can put a dent in the player character's health.

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 all targets indiscriminately.

Notable quotes

 * "Warning. A dangerous fugitive is on the loose. Do not attempt to apprehend."
 * "Do not be alarmed. Law and order will be restored shortly."
 * "Put down your weapons and submit to authority."
 * "Critters of unusual size detected."
 * "Tickets, please."

Appearances
Protectron robots appear only in Fallout 3.

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 it happens, they get flung high into the air.

Behind the scenes
Protectrons are modeled after Robby the Robot.