"That thing is huge; and built to fight."
Aloy, upon sighting a Thunderjaw

The Thunderjaw is a machine in Horizon Zero Dawn. It is a large Combat Class machine, one of the two largest machines of this class. Its size, power, and weaponry make it one of the most feared machines amongst the tribes.


This section contains heavy spoilers for Horizon Zero Dawn. Read ahead with caution.
Unlike the Zero Dawn terraforming machines, which were designed and controlled by GAIA, the Thunderjaw was designed by the AI HEPHAESTUS, which had seized control of the Cauldron facilities and begun aggressive countermeasures to the human practice of machine hunting. Thunderjaws are one of the most extreme examples of HEPHAESTUS' escalating attempts to cull the human population, a phenomenon known to the tribes as the Derangement.

The Carja hunter Ahsis, a Hawk of the Hunters Lodge, is the first known hunter to have killed a Thunderjaw. After the huge machine destroyed the Carja freehold of Morning Light, Ahsis tracked, found and engaged it, narrowly defeating it by using its own Disc Launchers against it. As the largest and most powerful machine ever successfully hunted in the Lodge’s history up to that time, the kill elevated him to the rank of Sunhawk.[1] The body of this Thunderjaw was later retrieved, and is now kept on display in the center of the Lodge.

His achievement was eventually topped by the successful hunt of another Thunderjaw. Known as Redmaw, this Thunderjaw had for years slaughtered every hunter who had attempted to kill it, earning it legendary status among Carja hunters. Eventually, Redmaw was killed by Hawk Talanah Khane Padish and her Thrush Aloy.

The Eclipse was able to corrupt at least two Thunderjaws, one of which was used to track Prince Itamen and Queen Nasadi, and the second of which was used to raid The Embrace.

HEPHAESTUS also produced Daemonic Thunderjaws, using one to guard the entrance to Cauldron EPSILON.


The Thunderjaw is a huge bipedal machine with features akin to those of a Tyrannosaurus Rex: powerful and bulky legs, a long body, and a heavy tail to maintain equilibrium. Its body features symmetrical weaponry: a laser weapon in its mouth, cannons on its jaws, a radar array on its back, and disc launchers on its hips.


Like most large machines, Thunderjaws are found alone. A pair can be found together protecting a herd of Lancehorns in the Glarebreak, west of Free Heap.

When undisturbed, Thunderjaws mill about their respective sites, their footfalls an early warning to anyone wandering too close.


The Thunderjaw’s huge size, power, capacity to sustain damage and array of weapons make it one of the most formidable machines. It employs a range of powerful melee and ranged attacks.

Additionally, its radar scanner allows quick detection of hunters hiding in tall grass. Unlike that of a Scrapper, able to detect only movement, the Thunderjaw’s radar can detect humans regardless of their motion. Thunderjaws have no elemental weaknesses, and are resistant to Shock.


A Thunderjaw’s major weaknesses are its heart and data nexus; ranged weapon strikes on either cause significant damage once they are exposed. Similarly, landing a shot of the corresponding element on exposed chillwater canisters, blaze canisters, or power cells will induce their status effects.

Its mandibular cannons, disc launchers and radar unit can all be removed with enough Tear damage.

Melee Attacks

Name Primary Damage Secondary Damage Trigger Range Description
Bite Attack 250 - 11m - 17m Snaps at enemy with mandibles
Charge 275 - 20m - 80m Charges and rams enemy
Foot Stomp 290 50 0m - 7m Stamps on enemy
Rushing Bite Attack 250 - 18m - 33m Charges and snaps at enemy
Tail Slam 300 - 6m - 16m Vertical bludgeon attack with tail
Tail Swipe 300 - 17m - 27m Spinning bludgeon attack with tail

Ranged Attacks

Name Damage Type Primary Damage Secondary Damage Trigger Range Description
Disc Launcher - 360 Attack Explosion 130 - 5m - 25m Discs strike in a circle around chassis
Disc Launcher - Barrage Explosion 130 - 20m - 80m Discs strike in a barrage
Disc Launcher - Homing Explosion 130 - 20m - 80m Discs track enemy
Laser Sweep Laser 200 130 per second 25m - 60m Fan-shaped spread of laser beams
Cannon Burst - Lead Up Projectile 60 - 20m - 80m Rapid-fire mandibular cannon shots; head sweeps laterally
Cannon Burst - Side to Side Projectile 60 - 20m - 80m Rapid-fire mandibular cannon shots; cannons repeatedly fire left and right


Image: Component: Information: Weakness: Strength:
Thunderjaw-Body Body Hard outer casing to protect synthetic muscle and operational systems. None Shock-Icon Shock
Thunderjaw-BlazeCanister Blaze Canister Shooting this canister with Fire will trigger an elemental explosion. Shoot off this component to collect Blaze. Fire-Icon Fire
Tear-Icon Tear
Thunderjaw-DataNexus Data Nexus Hitting this component deals greater damage to the machine. All None
Thunderjaw-DiscLauncher Disc Launcher This heavy weapon can be picked up and used after it has been detached from the machine. Tear-Icon Tear None
Thunderjaw-FreezeCanister Freeze Canister Shooting this canister with Freeze will trigger an elemental explosion. Chillwater can be looted from this canister. Freeze-Icon Freeze
Tear-Icon Tear
Thunderjaw-Heart Heart Hitting this component deals greater damage to the machine. All None
Thunderjaw-PowerCell Power Cell Shooting this component with Shock will trigger an elemental explosion. Sparker can be looted from this component. Shock-Icon Shock
Tear-Icon Tear
Thunderjaw-Radar Radar Destroying this component disables the scanning ability. Tear-Icon Tear None
Thunderjaw-Cannon Cannon Destroying these components disables Cannon attacks. Tear-Icon Tear None
Thunderjaw-Tail Tail Destroying this component disables the Tail attacks. Tear-Icon Tear None



  • Although Thunderjaws are shown in the Embrace at the start of the game, their presence during Aloy's infancy would be nine years before they were first observed by the Carja. It seems likely that their appearance in this scene is non-canon, and only intended to showcase the prominent machines of the game.
  • According to game designer Mathijs de Jonge, Thunderjaws are 24 meters long and 9 meters tall. [2]
  • Thunderjaws are perhaps the most well-known machines in Horizon Zero Dawn. Aloy's battle against a Thunderjaw first showcased the game at E3 2015, a massive poster of one was draped on the side of a building in Los Angeles to advertise the game at E3 2016, and the game's box art depicts Aloy hunting one.
  • Thunderjaws have 271 animations, 93 destructible armor plates, 12 unique attacks, 67 visuals and 550,000 polygons.
  • According to Herman Hulst, the managing director for Guerrilla Games, the Thunderjaw was the first machine implemented in the game. The total development time took a year and a half.
  • Not counting Tallnecks, the Thunderjaw is the first possible large machine that Aloy can encounter. One can be found in Valleymeet, east of Dawn's Sentinel.
  • Thunderjaws are more common compared to other large-sized machines.



Concept Art


  1. Legendary Hunts
  2. Mathijs de Jonge, Twitter
Acquisition Class Broadhead - Charger - FireclawFW - FrostclawFW - Glinthawk - Grazer - Lancehorn - Rockbreaker - Scrapper - Snapmaw - Strider - Trampler
Combat Class Ravager - Sawtooth - ScorcherFW - Stalker - Stormbird - Thunderjaw
Communication Class Tallneck
Recon Class Longleg - Watcher (Redeye Watcher)
Transport Class Behemoth - Fire Bellowback - Freeze Bellowback - Shell-Walker
Chariot Class Corrupted Machines - Corruptor - Deathbringer - Metal Devil
Unknown Class Control TowerFW
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