"If you've seen a Max go critical, you want to make sure it doesn't happen when you're around."
Eric Izzard (from Aliens: Frenzy)

A Berserker is a powerful type of combat cyborg first developed and employed by the United States Colonial Marine Corps with the purpose of Xenomorph-clearing operations. Each Berserker unit consists of a heavily armed and armored combat exo-suit encasing a human core, which is sealed inside and hard-wired into the suit's control systems via a neurological control system. During missions, the human operator is fed with a potent cocktail of stimulant drugs that renders them hyper-aggressive and essentially unstoppable, at the cost of physical and mental deterioration.

Initial Berserker models, developed by the USCM, were known as the Mobile Offensive Exowarrior (MOX).[1][3] Later versions, assembled by the Weyland-Yutani Corporation and operated as part of company-run hunter/killer Max Teams, were known by the similar name Mobile Assault Exo-Warrior (MAX).[4]


"Just three men? I expected an army!"
"Oh, we got that, too --
Sturges and Eric Izzard (from Aliens: Frenzy)

After the Company retrieved Sulaco flight recorder data at Fury 161 that revealed Ellen Ripley's battle against the Queen, calls to develop a weaponized Power Loader as a viable countermeasure against the Xenomorph species followed.[5] Early attempts rendered mixed results, with prototype exosuits proving awkward and clumsy to control in a combat environment.[6] After Hyperdyne Systems executive Spencer Lyndon was called in to assist in development, his solution was to abandon the notion of a human being an operator - instead, the operator was to become a biological component inside the machine.[7]

Berserkers were very heavily armed, capable of eliminating entire swarms of Xenomorphs single-handedly, and were equipped with sufficient acid-resistant armor to protect them from the creatures' corrosive blood. Typical armament for Berserker units include pulse rifles of various calibers, grenade launchers, and flamethrowers, all of which were integrated into the suit's arms. The MOX 16 weighed 2 tons[1] with later MAX suits weighing upwards of 10 metric tons.[2]

Shitkicker takes Queen

The MOX 16 'Shitkicker' in combat with a Xenomorph Queen aboard TodLab LXI.

Control of the Berserker was effected through a neurotransmission feed drilled into the operator's brain,[8] and the manipulation of physical controls within the suit's arms and legs. The operator was assisted by an advanced computer program that largely automated many of the Berserker's actions, such as aiming the various weapons and tracking targets.

Owing to their unstable and unreliable nature, Berserkers have yet to be deployed outside of controlled conditions and scenarios. However, a dozen exosuits have since entered field testing.[9]


"Gimme a break! Even I ain't crazy enough to volunteer for a Bug-Suit!."
Anton Pulaski (from Aliens: Frenzy)

The human controller at a Berserker's core was sealed inside and the suit was never opened under normal conditions — indeed, Weyland-Yutani specifically forbid their hunter/killer teams from accessing the machine's interior.[citation needed] When not in use, Berserker operators were kept in a medically-induced coma. When activated, or "fired", the operator was then fed with an incredibly potent cocktail of powerful 'synthetic adrenaline' that drove them into a blind frenzy, at which point they would simply be unleashed upon the Xenomorphs against which they were targeted. Their destructive rampage was often essentially unstoppable, and could even prove to be as much of a threat to friendly units as the enemy.

Berserkers were guided by a 'point man' that carried a homing beacon to direct them to their primary targets. The beacon would also deactivate the suit's weapons if they were directed within two feet of the point man.[10]

Officially, Berserker operators were volunteers. However, at least in the case of the units assembled and run by Weyland-Yutani, it is likely that they were in fact unwilling participants sealed inside against their will and kept in check through a mixture of sedatives. Operating the suit was incredibly taxing both physically and mentally, and it was not uncommon for operators to die as a result of repeated deployment. As such, Berserker units had an exceedingly limited service lifespan.

While it was possible for an outside human to enter and operate a suit, even with no training whatsoever, the experience was painful (owing to the suit's neurological control system, which required controls to be bored into the brain) and massively taxing to their mental state.



  • 25mm Gatling Gun
  • M240 Incinerator Unit
  • U1 M40 Grenade Launcher
  • U4 Repeating Grenade Launcher
  • Grasping Claw
  • Stun Baton

Berserkers were equipped with a plethora of powerful and deadly weapons. A typical armament included flamethrowers and a heavy machine gun. Some MOXs were known to be fitted with the same 25mm Gatling Gun installed on UD-4 Dropships.[11] A Berserker's outer shell completely enclosed the operator, offering Hazmat protection, alongside being covered in an acid resistant alloy.[12] One Berserker, MAX, was capable of emitting heat-rays from its visors.[13]


  • Berserkers are mentioned within Alien: The Roleplaying Game, with the handbook making mention of rumors of Weyland-Yutani covertly developing "drug-controlled psychopathic cyborgs".[14]



Notable Berserkers[]