Assaultron Assaultrons are a type of robot encountered in the Commonwealth in " Fallout 4 " . Background . The assaultron robot was constructed by RobCo and sold to the US Military as a front - line wartime combatant . It is fast and deadly at close range , and employs a devastating laser at a distance . The dominator variant can enable stealth technology . Characteristics . The assaultron ' s body seems to be modeled after that of a female figure . They are highly aggressive , fast , and some will attack the Sole Survivor on sight . The assaultron ' s face will become surrounded with red electric energy when it is charging its laser beam attack . The dominator variant is also equipped with a stealth field . An assaultron ' s laser can be halted or avoided by using Jet and stepping out of the way , killing it , or doing enough damage to its head . If it is allowed to charge its laser all the way , and if not blocked by an object , it will inflict devastating amounts of damage on its hapless target , often killing even those highly experienced or NPCs in seconds . The fact that assaultrons take reduced damage from headshots only serves to compound their main weapon ' s threat potential . Though however one can cripple the head , thus removing its ability to use its head laser . Assaultrons ' weak points are their legs . However , when these are destroyed , the assaultrons will continue to pursue the target by crawling on the ground . After taking sufficient damage , they will charge a potentially deadly explosion as a last desperate attempt to eliminate the target . Killing them before they can activate it will result in a normal death . Legendary assaultrons will invariably detonate violently , similar to a mini nuke blast , approximately two seconds after they are destroyed . On lower levels they can be very difficult to face head - on , due to their fast speed and powerful attacks . A notable ability they have is being able to sidestep , making them difficult to hit , especially with semi - automatic weapons . While their laser is fully charged they are also capable of grabbing an opponent at close range and firing their laser directly into the victim ' s head , which is a virtually assured death sentence . Assaultrons ' Perception seems to be significantly higher than other enemies ' , making them difficult to sneak up on and hack without maxed - out Sneak skills , corresponding armor and / or using a Stealth Boy . Variants . Assaultron . Deadly especially for the unprepared , the assaultron is among the most fearsome robotic enemies in the game . While their usual unarmed attacks are already a challenge for some , the real danger from these enemies comes from their charged laser weapons . The laser cannon that doubles as its head can usually disintegrate victims on contact . Making matters worse , dodging the weapon can prove difficult , since the size of the laser engulfs anything in front of it . Luckily the charge up for this weapon is long and given away by an impressive light show coming off the assaultron ' s face . A fast fighter may be able to kill it quickly or even get behind it while its firing animation is going . Assaultron invader . Invaders have a larger health pool and electrified hands that stun and do energy damage in addition to their regular melee damage . A blue glow can be seen around their hands even after death . Assaultron dominator . The Dominator variant has a powerful attack that consists of stabbing the target ' s torso with two swords simultaneously and spreading its arms outwards , typically resulting in a one - hit kill against low leveled or low armored players . These stronger variant of the already formidable assaultron can be counted among the nastiest dangers in the Commonwealth . The blades on its arms give its unarmed attacks considerably more bite while its head laser will still be gunning for its target . But the Dominator ' s true danger is its unique stealth capability , making it difficult to target , especially in VATS , before it gets into melee range . Even those in power armor should take a moment to plan how they intend to deal with this threat . Gunner assaultron . The Gunner assaultron is the same as the basic assaultron , except it has the Gunners symbol painted on its chest , in place of the star and USA markings . They are frequently found at gunner bases and outposts . Gunner assaultron invader . The Gunner assaultron invader is the same as the assaultron invader , except it has the Gunners symbol painted on its chest , in place of the star and USA markings . It is frequently found in Gunners bases and outposts . Gunner assaultron dominator . The Gunner assaultron dominator is the same as the assaultron dominator , except it has the Gunners symbol painted on its chest , in place of the star and USA markings . One replaces Tessa after she is killed at Quincy ruins . Assaultron devil . Assaultron devils are a modified variant of the assaultron created by the Rust Devils . It is weaker than the normal variant . Assaultron demon . Assaultron demons are a modified variant of the assaultron created by the Rust Devils . Assaultron succubus . Assaultron succubi are a modified variant of the assaultron created by the Rust Devils . A powerful opponent that usually has a skull mask . Assaultron hag . Assaultron hags are a modified variant of the assaultron created by the Rust Devils . Assaultron gorgon . Assaultron gorgons are a modified variant of the assaultron and are created by the Rust Devils . Wielding two shishkebabs , they are the most powerful assaultron variants of all and are dangerous opponents . One can be found with Ivey in Fort Hagen hangar and others can sometimes be seen with Rust Devil patrols . Novatron . Novatrons are the base Nuka World variation of an assaultron . They can be found in the Galactic Zone in Nuka - World , and more specifically in the RobCo Battlezone . Additionally two can be found on pillars guarding the entrance outside . Instead of a claw , a space laser replaces one of the hands . Novatron invader . The Novatron Invader is an upgraded version of the Novatron . They can be found in the Galactic Zone in Nuka - World , in the RobCo Battlezone . Novatron dominator . The Novatron dominator is an upgraded version of the Novatron , the Nuka - World variation of the assaultron . They can be found in the Galactic Zone in Nuka - World , in the RobCo Battlezone . Novatron initiator . The Novatron initiator is an upgraded version of the Novatron , the Nuka - World variation of the assaultron . They can be found in the Galactic Zone in Nuka - World , in the RobCo Battlezone . Novatron eliminator . The Novatron eliminator is an upgraded version of the Novatron , the Nuka - World variation of the assaultron . The Novatron eliminator is the strongest variation of the Novatron and Assaultron , and can be found in the RobCo Battlezone , in the Galactic Zone of Nuka - World . Appearances . Assaultrons appear only in " Fallout 4 " and its add - ons " Automatron " and " Nuka - World " .