Aurin fauna guide: the Ombrask, the Rolvak, the Lumbro and the sentinels of COLONIZED

Four things in Aurin can attack you without wearing a uniform. Three are animals from Ithera, the temperate planet; the fourth is a machine of the Flota Aura that has gone forty-six years without a new order. This guide is the bestiary of COLONIZED in one page, as the Codex records it.

It is the canon of the universe, not a list of what you can hunt today. The current build already has alien fauna and human enemies with their own AI; which creatures appear in each alpha wave, and where, will be in the alpha notes.

The four at a glance

Creature	Nickname	What it is	Temperament	Where it lives (canon)	Threat
Ombrask	the crestback	giant predator, about 6 m, solitary	aggressive, territorial	the canyons of Ithera; the largest in the core of La Cicatriz	IV
Rolvak	the barrelback	its smaller cousin, about 2.5 m, in herds	neutral	rocky ground and grasslands; nests in the Vergel Pálido	II; a herd, III
Lumbro	the glowlouse	armoured ball under a metre, in herds	passive	the wetlands of the Espejos de Rocío	I
Sentinel	the orphan	an auxiliary core gone feral, in a flying hull	aggressive	above La Cicatriz; salvage drones in the Cementerio de Aura	III; a swarm, IV

The threat column is the scale of El Faro Roto’s catalogue, from I to V. Only the leader of each species reaches V.

How to read them

Temperament. The aggressive kind attacks as soon as it senses you, by sight, sound or smell: the Ombrask and the sentinel. The neutral kind stands its ground, growls and only attacks if you do, and then it bears a grudge and comes after you, not the spot you fired from: the Rolvak. The passive kind never attacks: the Lumbro won’t even run until you hurt it.

Warnings. The Ombrask growls and then roars; the Rolvak growls on a loop while it makes up its mind; the sentinel lights up the tips of its tentacles half a second before it fires. The Lumbro only chitters, so quietly that at twenty metres you can’t hear it.

Weak spots. The head counts double on the beasts, including the crest that hangs from the nape of the Ombrask and the Rolvak; on the sentinel, the eye. Legs soak up shots worse than the body.

The Ombrask

The largest animal the Flota Aura has found in Aurin: a predator some six metres long, with bare mauve skin, horny plates on its shoulders and a fleshy crest that swings when it roars. It hunts the canyons of southern Ithera, and Cañón Espina, with its exposed vibrosteel and metazinc veins, is its ground, which makes it the most dangerous place on the planet to mine. Heat and vibration draw it in. If you hear the growl, it has seen you; if you hear the roar, it is coming. When it crouches, it is about to leap.

The Rolvak

The animal an Ithera colonist sees most: low, heavy-set, with a shell of plates that closes like a barrel when it rolls. It grazes in herds and doesn’t go looking for a fight. Hurt one and the herd hears about it for dozens of metres around, and the wounded animal rams, bites or curls into a ball and rolls into you, twice as fast as it runs. One shot warns them all, so the one grazing furthest out is the one to pick.

The Lumbro

Half giant woodlouse, half crab: greenish-grey plates, violet membranes and, at nightfall, a row of cyan dots along its body. It lives in the wetlands of the Espejos de Rocío, where almost every new colonist starts out, and it never attacks: threatened, it closes into an armoured ball. Its enemy is the Ombrask.

The sentinels

The Flota Aura kept its books in auxiliary cores, one per section. The ones rescued after the war are the Compis; the ones that carried on alone are sentinels: a gunmetal hull with one cyan eye, four claws and six tentacles almost four metres long, still looping a patrol order from forty-six years ago. It locks on from a distance, fires beam volleys from its tentacle tips and explodes when it dies. A sharp sideways move leaves its slow aim behind, and rocks stop the beams.

What each creature leaves

Creature	Material	Grade	What it is for
Rolvak	Espina de Rolvak	III	hunters’ weapons, spine venom, the Suero de Adrenalina Quitinosa
Rolvak nest	Colmillo de Nido	—	the milk fangs young Rolvaks shed in the nest
Ombrask	Placa Quitinosa de Ombrask	IV	armour plates that resist knockback
Lumbro	Glándula Bioluminiscente de Lumbro	IV	high-level medicine; a sedative that doesn’t kill
Sentinel	Núcleo Motriz de Centinela	IV	the neural extract for assisted sights and ship sensors
The Alfa	Piel de Alfa Curada	V	elemental-resistance armour

Meat and fat come from any kill. Where every material fits among the ores is in where to get technalite and the other four ores.

Regional forms

No animal in Aurin is the same everywhere. El Faro Roto’s catalogue, reproduced in the Codex, records how each species changes colour, size and habits with the climate:

Climate	Ombrask	Rolvak	Lumbro	Sentinel
Canyon and grassland	canyon	brown	—	perimeter
Jungle and spore forest	—	moss	Vergel	—
Wetland and coast	—	—	dew; tidal (Melvara)	—
Desert	salt-flat	—	—	sand (Kharsis)
Ice	frost	frost (Kaldrek)	—	frosted (rings, Renvar)
Volcanic and thermal	ashen	soot (Kaldrek)	thermal (Kaldrek)	—
Caves	grotto	—	grotto	—
Hot savannah	—	red (Ormek)	—	—
Laboratories	—	vat-born soot	—	containment
Vacuum	—	—	—	salvage drone

Each species has one that leads: the Alfa of the Ombrask, the herd bull of the Rolvak, the colony mother of the Lumbro and the elder sentinel. The Ombrask has never left Ithera; the Rolvak has travelled furthest, with herds on Ithera, Ormek and Kaldrek.

Who hunts them

When the Arca Aurora came down in Year 1, its xenological containment bay opened and Ithera’s fauna got out. Apex Syndicate was born from the unit that contained it, and its law is the controlled cull: kill what is necessary, leave what is enough. It pays by quota, not by the head. The two houses see it differently: the Zenith’s Guardia Vertical pays for total clearances before terraforming, and the Nadir’s Guardabosques watch over Ithera’s fauna and veto hunts that empty it. More in the five Global Guilds.

In the canon, every few weeks a sudden migration overruns the defences of La Cicatriz: the fauna invasion, the “Ruptura del Armisticio”, when the Zenith and the Nadir defend together. Events like this one are design, not part of the current build.

Read the bestiary in the Codex · Apply for the closed alpha