Combat Class machines
Ravager
The Ravager is a machine in Horizon Zero Dawn. It is a medium-sized apex combat machine, feared because of its ferocity and its powerful energy cannon. Like other combat machines, it was designed and developed by the artificial intelligence (AI) HEPHAESTUS to protect Zero Dawn terraforming machines from predation by humans.
Sawtooth
The Sawtooth is a machine in Horizon Zero Dawn. It is a medium-sized Combat Class machine, one of the first known machines of this class. It was developed by the artificial intelligence (AI) HEPHAESTUS as a graduation in its efforts to protect Zero Dawn terraforming machines from human predation.
Stalker
A Stalker is a machine in Horizon Zero Dawn. It is a medium-sized Combat Class machine; however it is unique among combat machines in that, while all other known combat machines employ open aggression, the Stalker employs stealth. Its adeptness at ambushing, coupled with its deployment in areas where visibility is challenging, such as jungle environments, makes the Stalker a particularly grave threat to any human in these environments.
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 an array of heavily damaging weapons make it one of the most feared of all machines. 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.
Scorcher
The Scorcher is a machine exclusive to The Frozen Wilds. It is a midsize Combat Class machine known to exist only in the Banuk region called The Cut. It bears some similarities to the Ravager, but it is far more powerful, agile, and aggressive. This is even more so in its augmented or Daemonic state. Indeed, Daemonic Scorchers are one of the most ferocious and formidable machines known to exist.
Frostclaw
The Frostclaw is a machine exclusive to The Frozen Wilds. Like its twin the Fireclaw, the Frostclaw is classed as an Acquisition Class machine despite it’s main purpose being combat. It is an extremely formidable combat-ready machine, capable of highly damaging Freeze-augmented ranged and melee attacks. It is known to be found only in the Banuk region known as The Cut.
Fireclaw
The Fireclaw is a machine exclusive to The Frozen Wilds. Like its twin machine the Frostclaw, this huge, ursine machine is classed as an Acquisition machine despite that being its secondary function. Their main purpose is being hunter-killer units for deployment against humans.
Stormbird
The Stormbird is a machine in Horizon Zero Dawn. It is a large aerial combat-class machine. Its ability to fly distinguishes it from other machines of this class. Its huge size, intimidating appearance, superior field of vision (due to being aerial), and an array of powerful attacks make it a lethal threat to any human who enters an area over which a Stormbird patrols. Stormbirds were not created as combat machines. Instead, they were originally Zero Dawn terraformers.