Thunderjaw

The Thunderjaw is a robotic machine in the Horizon video game franchise developed by Guerrilla Games. First appearing in Horizon Zero Dawn (2017), the machine returned in Horizon Forbidden West (2022) and multiple spin-off titles. It is a heavyweight combat-class modelled after the Tyrannosaurus rex. Characterised by its massive size—measuring approximately 10 m (33 ft) tall and 24 m (79 ft) long—the Thunderjaw utilises an arsenal of twelve unique weapons, including machine guns, lasers, and its signature disc launchers. In the series' lore, Thunderjaws were created by the artificial intelligence HEPHAESTUS as part of "the Derangement" to serve as apex predators capable of hunting humans.

Beyond its role as a formidable in-game antagonist, the Thunderjaw served as the proof of concept for Guerrilla during the development of Zero Dawn. It took the team 18 months to bring the machine from its initial sketch to a fully functional state. Its complex mechanics, such as an exoskeleton design featuring destructible armour plating and detachable weapons, served as the blueprint for all other machines in the franchise. The machine was featured on the box art of Zero Dawn, has inspired various merchandise including a Magic: The Gathering card and a Funko Pop, and has made cameo appearances in other video games. The Thunderjaw has received positive critical reception and is frequently cited as the most iconic and recognisable machine in the franchise, though its portrayal in spin-offs has seen a more mixed response.