Protectron ( Fallout 4 ) Protectrons are a type of robot encountered in the Commonwealth in " Fallout 4 " . Characteristics . Unlike protectrons in previous games , the Commonwealth variant ( except the police , medic , construction and fire brigadier models ) appears to have a transparent " faceplate " made of plastic or glass , with several blinking red lights visible behind the faceplate . It is possible to break this plate by fully damaging the head , which in turn ' blinds ' the protectron , reducing its accuracy . If the protectron is inactive and a melee weapon is used , it will increase the chance of breaking the faceplate . Previous versions had an opaque metal faceplate with a lit up glass dome on top . Specifications . Protectrons have a glass dome on top of their heads that acts as an ocular lens which allows the protectron to scan its surroundings and act accordingly . In each " hand " is a laser emitter that shoots a high - powered laser . The upper - body of a protectron can swivel up to roughly 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 engaging the nearest possible target , regardless of any previous affiliation . Gameplay attributes . Compared to previous games , protectrons have become significantly sturdier , particularly so against ballistic damage . However , by attacking their limbs , their more vulnerable insides will be revealed , which can be attacked for extra damage . If both of the protectron ' s arms are destroyed , it will initiate a self - destruct sequence . The unit will begin to glow yellow and explode with the force of a mini nuke or a car shortly thereafter . Protectrons take reduced damage from shots directed at their head . Damage to the rest of their chassis is taken normally . Legendary protectrons , like other legendary robots , will detonate violently , similar to a mini nuke blast , approximately two seconds after they are destroyed . Variants . Protectron . The standard protectron can use its arm lasers to attack foes from a distance , or swat foes away for a substantial amount of damage when up close . If their arms are destroyed , they will initiate their self - destruct sequence and waddle toward their enemies in a last - ditch attempt to take them out . Appears in green , blue and tan . Protectron medic . This model possesses two static electricity generators on its hands which are intended to be used as defibrillators . Protectron medics lack any ranged armament , but are deceptively powerful at melee range . They can attack targets with a staggering flurry of electrified slaps followed by a two - handed power attack . Protectron fire brigadier . This protectron model is equipped with an internal " cryo - gun " which it can utilize in battle . Before the War , it was intended to stop fires . If any firearms are fired near it , then it will attack . If the Sole Survivor is equipped with a Molotov cocktail , the protectron fire brigadier ( or any protectron set to fire brigadier personality mode ) will warn that the item they are holding is possibly a fire hazard and should be disposed of . Protectron watcher . A somewhat stronger and more powerful variant of the original protectron , this type can utilize dual laser arms in combat and a better melee attack . It can also appear in several different colors . Utility protectron . They may have one or two nail guns , similar to the railway rifle . They have a yellow hazard color scheme with a light on their heads . They also have reinforced plating on their heads and backs originally designed to protect them from construction hazards but now protect them from whatever they may fight in the wastes . In close range combat , it will attack its target with simple punches . If its target is outside of melee range , it will instead utilize its nail guns , rapidly firing spikes that can kill even a high level player character with a single shot . It can also be spawned with two cargo loading arms that deal a large amount of melee damage . Police protectron . Police protectrons are similar to the utility variants due to the fact that they have reinforced plating over their inner workings . They can be distinguished due to their blue paint job . These protectrons utilize a stun gun or electric shock of some description in close range combat . Protectron guardian . Similar to the protectron and protectron watcher , this variant is the toughest type of any protectron . It can use both dual rapid lasers , punches and strong bashes . Protectron devil . Protectron devils are protectrons created by the Rust Devils . They are usually seen in packs with them or other protectron devils , but are less powerful than their base - game counterparts . Protectron scourge . Protectron scourges are a tougher variant of the protectron devil . With a stronger melee attack and better laser damage . They are usually seen with Rust Devils or other protectron scourges . Protectron basilisk . Protectron basilisks are very high level encounters , with heavily armored chests and legs . They wield a railway rifle in their right arm and a flamer in their short left arm . The right wrist , arm and leg plates are spiked and serrated , causing their melee attacks on targets to leave them bleeding . The left arm and leg plates are reinforced to prevent much ballistic damage . Their heads are tall , like a spiked crown , with the skull of a human on the lower part . Their waist has a standard plate . They can be seen accompanying legendary rust devils , assaultron gorgons or Mister Handy war machines . If prepared , they can take down a behemoth or an integrated tankbot . Protectron golem . Protectron golems are an even stronger variant of other rogue protectrons . With an even stronger melee attack and even better laser damage . Again , seen with Rust Devils and other protectron golems . Nukatron . A type of protectron unique to Nuka - World . This protectron type shoots weaponized Nuka Cherry / Cola Quantum blasts instead of lasers . Its head and torso are combined into one , with a small screen on the upper torso presumably serving as its primary interface . The screen will sometimes play the " Park Safety Rules " promotional Nuka - World trailer , complete with audio . When this portion is scavenged and put on a robot workbench it removes the option of adding a separate head . Their voices are different than that of a regular protectron , and are much softer and slower . Nukatron watcher . Identical in appearance to other Nukatrons , this variant has slightly higher stats and patrols the Galactic Zone . Nukatron guardian . Identical in appearance to other Nukatrons , this variant has even higher stats and patrols the Galactic Zone of Nuka - World . Nukatron defender . Identical in appearance to other Nukatrons , this variant has much higher stats and patrols the Galactic Zone of Nuka - World . They have three - and - a - half times the amount of health as the normal Nukatron . Nukatron sentinel . Identical in appearance to other Nukatrons , this variant has the highest stats and patrols the Galactic Zone of Nuka - World . The Nukatron sentinel has four times more health than the normal Nukatron and shoots deadly bursts of weaponized Nuka - Cherry and Nuka - Quantum . Galactron . Galactron are another variant of the protectron added in Nuka - World in the Galactic Zone . They have shiny white bodies , and the glass plates on their faces are gold . Galactron usher . Galactron ushers are meant to provide security during different events . Galactron watcher . Much like the protectron watcher . Galactron guardian . Equal to protectron guardians , it is a re - skin of protectron guardian Galactron defender . Beefed - up Galactron Galactron technician . The Galactron technician is a Galactron in the projection booth of the Starlight Interstellar Theater . It will initially be in a charging station until the booth is entered . Gunner protectron chef . This type of protectron is used by Gunners . The protectron chef wears a chef hat and is found in the Grandchester Mystery Mansion . Gunner protectron . Protectrons that have been reprogrammed to be Gunner soldiers . Protectron sheriff . Unnamed protectron sheriffs do not appear anywhere in Nuka - World , but they can still be spawned with the console . However , named protectrons Sheriff Eagle and Sheriff Hawk do appear in Dry Rock Gulch , manning the entrances as tour guides . Personalities . In " Fallout 4 " , each protectron has a programmable personality so that it can serve a variety of roles : " default " , " subway steward " , " law enforcement " , " fire brigadier " , " medical responder " and " construction worker " . Generally , the personality does change the behavior of the protectron , and what it says as it patrols ( construction workers will make comments about workplace safety and attack characters not wearing a work helmet , and medical responders will make comments about injuries and be generally passive until attacked ) . Medical responders will not heal a player character ' s injuries and all variants will attack hostile NPCs on sight . One other change is that subway stewards will insist on seeing the player character ' s subway token and will attack when if is not produced ( regardless of whether one is present in their inventory or not ) . To give the subway token to the subway protectron , one must press the action button / key immediately following the bot ' s request . There is a window of approximately . 8 seconds to give the coin ( Video Demonstration ) . Personalities can be changed remotely without having to shut down the protectron . Appearances . Protectrons appear in " Fallout 4 " . Behind the scenes . Protectrons are modeled after from the 1956 sci - fi movie , " " .