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 immune to tranquilization, and anybody trying to passive tame a Hatzegopteryx must have a death wish. 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 challenge 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 (Wild) Base Stat (Tamed)
Health 19250 3000
Stamina 5000 340
Oxygen 150 150
Food N/A 1380
Weight N/A 500
Melee Damage 175% 168%
Movement Speed 100% 100%
Torpidity 9850 9850

Left Click - Peck

250 Base Damage (Wild) - 100 Base Damage (Tamed)

Right Click - Roar

Drains 750 Torpor (w/ 1 Minute Cooldown)

C - Aerial Drill Attack

285 Base Damage (Wild) - 115 Base Damage (Tamed) - Hits 7 Times - Inflicts Bleed - Pierces Armor

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

The Hatzegopteryx takes 2.25x damage from projectiles.

Hatzegopteryx in the wild cannot be tamed, and can only be tamed by hatching from an egg. This egg has a 5% chance to be obtained from killing a wild Hatzegopteryx.


  • 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.