This article lists the various background character deaths that occur in the 1986 James Cameron film Aliens.
- When Ripley and the Colonial Marines arrive at LV-426, they find the colony deserted, but also find evidence of an alien presence, namely damage caused by the Xenomorphs' acidic blood. Aside from the young girl Newt, everyone on the colony is apparently dead.
- Inside the colony's medlab, Bishop discovers a medical log relating to John Marachuk, a maintenance engineer on the Hadley's Hope colony. The file details how Marachuk died after being exposed to a Xenomorph facehugger; the medics had forcibly removed the parasite, killing Marachuk in the process.
- Six facehuggers are found suspended inside nutrient tanks in the medlab. Four of the creatures are already dead.
- Inside the colony's atmospheric processing station, the Marines discover a vast Xenomorph hive where most of the colonists have already been used as incubators. One colonist is found alive, but she suddenly convulses as the alien larva within her gnaws its way out of her, killing her. Vasquez then uses her flamethrower to torch the newborn alien to death.
- After Vasquez incinerates the Chestburster, the Drones around the hive begin emerging from the walls and attack the platoon. Very little of the carnage is shown on-screen during the firefight, but two Xenomorphs are shown to explode after being shot with smartgun fire.
- As the platoon falls back to the APC, Vasquez fires on a Xenomorph reaching for Drake. While she does kill the creature, she also causes Drake's death as he gets doused in the alien's acid blood.
- When a Xenomorph attempts to force its way into the APC, Hicks draws his shotgun and stuffs the barrel into the alien's mouth before firing, killing the creature but also wounding himself with acidic backsplash.
- A Xenomorph drone breaks through the windshield of the APC and grasps at Ripley, but she manages to loosen its grip before hitting the brakes, sending the creature flying backwards. Ripley then accelerates and runs over the alien, crushing it to death and damaging the vehicle in the process.
- A Xenomorph sneaks aboard the Bug Stomper dropship, killing Spunkmeyer and Ferro and causing the dropship to crash and explode, resulting in its own death too.
- Back inside the medlab, two Facehuggers attempt to parasitise Ripley and Newt. Hudson manages to get Newt away before blasting the attacking Facehugger with his pulse rifle.
- Hicks and Vasquez struggle to pull away the Facehugger that is wrapping around Ripley, but manage to pull it back before it can couple with her face. Hicks throws the parasite across the room and then Vasquez shoots it into oblivion.
- A firefight breaks out in the colony's operations center when a swarm of Xenomorphs break through the ceiling. Hudson and Hicks both shoot an alien each in the opening seconds.
- Backed into a corner, Ripley uses what Hicks taught her earlier and shoots a Xenomorph dead with a pulse rifle.
- Hudson guns down four more Xenomorphs before more creatures break through the floor and pull him down through the hole.
- Vasquez blasts three more Xenomorphs with her smartgun.
- As the surviving team members flee through the ventilation ducts, Vasquez brings up the rear, shooting an unknown number of Xenomorphs before her rifle is out of ammo.
- A Xenomorph pounces on Vasquez from above, but Vasquez manages to pin the creature against the side of the duct and shoots it with her sidearm. Doing so causes the creature to gush acidic blood, injuring Vasquez.
- With Xenomorphs closing in on them from all sides, Gorman sets off an M40 grenade, killing himself, Vasquez and several aliens along with them.
- As Ripley and Hicks are about to ride an elevator, an alien charges at them and tries to force its way through the door. Hicks shoots the creature, but the acid spray quickly destroys his armour.
- Within the alien hive, Newt is about to be set upon by a Facehugger. Her screams draw Ripley to her, who shoots the Facehugger as it emerges from its egg, as well as three Drones.
- Ripley and Newt end up running into the Alien Queen's chamber. Ripley shoots a jet of flame as a warning to the Queen that she'll destroy the eggs in the chamber if any of the Queen's Warriors go near her. As Ripley and Newt back out of the chamber, a nearby egg opens up and Ridley torches it, then sprays flame throughout the chamber and incinerates all the other eggs.
- Ridley launches a grenade into the Queen's ovipositor, destroying all the unlaid eggs within.
- Ridley guns down four Xenomorph Warriors as she and Newt withdraw from the Queen's chamber.
- As she takes Newt away from the Queen's chamber, Ridley throws one more grenade into the burning hatchery and destroys the remaining eggs.
- As Ridley, Newt, Bishop and Hicks fly away aboard a dropship, the atmospheric processing station self-destructs, destroying Hadley's Hope and wiping out the Xenomorph infestation... except for the Queen, which was able to stow away aboard the dropship.