Additional Creatures Wiki

Hatzegopteryx are reptiles in Additional Creatures.


The true tyrannical baron of the ark's skies, Hatzegopteryx is the undisputed king of flight. A massive shadow similar to a warplane, Hatzegopteryx is capable of speed and maneuvers unlike anything else its size. It is a tyrant that hunts anything that soars: Quetzalcoatlus, Harpagornis, Wyverns- Hatzegopteryx is an apex predator with no equal in the sky and comparable to the strength of Giganotosaurus and Smok Saurovindico. Hatzegopteryx's ominous, bellowing roars are its only warning to its presence before it rushes in and shreds its target out of the sky. Its adaptations, appearance, size and power make it a target for any survivor wishing to master the ark's skies...however, it is far from an easy task. It is a tremendous hassle to tranquilize, and an absolute nightmare to keep unconscious. It refuses all standard forms of food and requires a large amount of hard-to-obtain food to tame. Anybody who manages to tame Hatzegopteryx has nothing to fear in the skies, save for another Hatzegopteryx...but only the most prepared of survivors will be able to attempt to tame it!

Color Regions

Color Region 0 - Wings

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Color Region 2 - Face, Throat

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Color Region 4 - Beak, Crest, Throat Pycnofibers


Color Region 5 - Body

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Base Stats, Controls, and Abilities

Attribute Base Stat
Health 2400
Stamina 1200
Oxygen 150
Food 1380
Weight 500
Melee Damage 168%
Movement Speed 100%
Torpidity 9850

Left Click - Peck

100 Base Damage

Right Click - Frightening Roar

30 Base Damage - Drains 750 Torpor (w/ 1 Minute Cooldown) - Inflicts Frightened

C - Aerial Drill Attack

200 Base Damage - Hits Three Times - Inflicts Bleed

Hatzegopteryx is immune to bleed, chain bolas, and spider webs.


  • Hatzegopteryx is one of the strongest creatures in Additional Creatures, being comparable to Smok saurovindico.
  • Hatzegopteryx means "Hatzeg Wing" after the island of Hatzeg that it lived on, while "grimm" is in reference to the Grimm from RWBY, who are red and black monstrous entities that are essentially the physical embodiment of evil.
  • Hatzegopteryx lived during the Late Cretaceous 66 million years ago, where it was the apex predator of the island known as Hatzeg, now currently in Romania. The dinosaurs on the island exhibited dwarfism, making even the largest species relatively small. This allowed the still large Hatzegopteryx to basically hunt whatever it pleases.
  • Hatzegopteryx, with its 10m wingspan, is the largest pterosaur and flying animal to ever exist, outmatching its similar in wingspan but lighter built cousin: Quetzalcoatlus.
  • Hatzegopteryx is a long time coming, originally being planned for the original Additional Creatures mod.
  • Hatzegopteryx was originally planned to be a member of "The Fated Four" alongside Yangchuanosaurus, Tsaagan, and Machairodus, but that was eventually scrapped, with that role being given to Alanqa instead before this concept was scrapped entirely
  • The Hatzegopteryx's Aerial Drill Attack leaves a purple trail. Nobody really knows why.