Giant Armoured Serpentids

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Giant Armoured Serpentids
Playable: Yes
Antag Only: No
Whitelisted: Yes
Physical Characteristics
Height: 9 feet
Weight: ?

15-20 feet

System: XX-168
Planet: Tau-Wilo

Giant armoured serpentids (GAS) are a massive predatory species who are trained by a company called Xynergy to work both on and off the SEV Torch. Physically, although they look intimidating, they're unlikely to harm a human except in times of great stress. If you see them getting their large attack arms ready, it's telling you to back off.

General Knowlege

These are things that the average human character could know about giant armoured serpentids.:



GAS are much taller than humans, standing at around nine feet from the ground. Sketch by Strider Den,
Giant armoured serpentids are arthropods and have long segmented bodies. Their two sets of arms each have vastly different functions. Their larger scythelike pair is used for hunting prey and when not in use, can be tucked in and held tightly against their bodies. The second set is smaller and proportioned more similarly to those of humans. They have three fingerlike appendages, each called a tarsus, on the ends of the foremost segment of these arms which allow them to pick up and manipulate tools and objects. These have multiple segments which can bend in both directions, wrapping around whatever they are picking up.
A centipede
A Mantis-wing
Their tails look like an enormous legless centipede. Fragile wings are protected under a protective cover when not in use.

Moving either pair of arms requires both an underlying muscle structure and pressure generated from adjusting the volume of blood in their limbs. The mechanism is functionally similar to that of a hydraulic press and is capable of generating extreme amounts of pressure on anything they're grasping. This power requires them to divert fluid from their manipulation arms to their hunting arms, causing them to drop anything they might have been holding beforehand and rendering them useless for any precise tool using.

Giant armoured serpentids, have a thick exoskeleton which is very strong. It has a series of iridophores over the surface which allows them to adaptively blend into their environment with extreme precision. This requires the precise control the cells, and as such isn’t something they can do consciously. They use this ability in a variety of different ways including camouflage, scaring their enemies, and as a part of a mating display.

GAS have fantastic eyesight, even in very dark conditions due to their two large compound eyes set wide enough on their heads to give them a 360-degree view around them. Each individual section of the compound eye has a tapetum lucidum, a special reflective backing which allows them to see better in the dark in the same way cats do. This, however, makes them vulnerable to sudden bright lights such as flashes. A flash will temporarily blind them and while their vision will mostly recover, without medical attention their eyes will be permanently damaged. Luckily, they have two nearly opaque lenses that they can slide down over their eyes to protect them from bright lights such as fires. Though effective, these lenses make the giant armoured serpentid using them blind farther than about a meter away. They do not use them to blink or to clean their eyes but instead must clean their eyes manually as a part of the grooming process.

The unique oxygen strategy of the giant armoured serpentid relies on using the phoron stored from both the air and from the food they eat. They create acetone using a special organ to extract components from what they eat and the air, mixing it with phoron to create dexalin. This is used to supplement the insufficient oxygen they get from the air around them and enables them to live in areas, like human ships and bases, with even lower oxygen levels and pressure than their home planet. They store sufficient phoron to last for months or years but need to create acetone frequently to maintain their level of dexalin. Theoretically, they wouldn’t need dexalin in an environment with sufficient levels of oxygen at a high enough pressure.

Hunting and Diet

The hunting forelimbs of giant armoured serpentids have hooked spikes to prevent prey from escaping.
Giant armoured serpentids are omnivorous, eating raw meats and raw vegetables. Grains like wheat or rice, starches like potatoes, fruits, and cooked foods don't agree with them and shouldn't be eaten. They grow their own vegetables using a simplistic farming technique and gather other edible plants that grow close to their colonies.

GAS are also expert hunters and are well adapted for capturing and killing prey up to double their weight. As an ambush predator, they stay completely motionless for long periods of time, waiting for prey to pass. They often position themselves within reach of game trails, their skin hiding them and leaving them effectively invisible. They lay their antennae in front of them across the path and, when an animal passes by, they strike at it to grasp it in their large forelimbs. They then will usually go for the head, using their sharp mandibles to chew open the skull or exoskeleton of their catch. After consuming the head, they will often bring the rest back to share with the colony.

Speech and Formal Language

Giant armoured serpentid language is a mixture of visual and audio signals, though they don’t work together. Rather, the two are independent of each other and the language can be fully understood if you can only hear it or if you can only see it. This is because of the clicking, grinding, and buzzing sounds involved each have a unique mouth movement that produces it. GAS can “read lips” in this fashion or rely on the audio, though the audio component is not as understandable and leads to more mistakes understanding what the other person is saying.

Mammalian, reptilian, or amphibious species would be unlikely to be able to produce the correct sounds and they definitely wouldn’t be able to produce the correct visuals for the language. However, the sounds can be easily reproduced by machines and are easily translatable by translation devices. Because they can’t be pronounced by humans and because the sounds to create them are abstract and without meaning, the names they use for themselves lack an equivalent in human language.

Serpentids also are unable to produce the sounds to speak in any language but their own. Human sign language isn’t possible either as, with only three “fingers”, they don’t have the ability to make certain signs. They are physically able to communicate in Siik'tajr but at this point have no reason to know it. Since GAS can't make the sounds that humans use for their languages, a robotic speaking device has been developed for them. This vocal synthesiser only allows the user to make sounds that it would otherwise be unable to; the user must be fluent in the language.

In all languages they use, giant armoured serpentids have a distinct style. Their sentences are long and they have difficulty organising their thoughts to speak efficiently.

Group Structure

Giant armoured serpentids live in colonies with 30-200 members. When a young giant armoured serpentid fledges, they choose a colony based on preference. The larger colonies are colonies that have attracted more members. The colony size differs over time as adults with change colonies if they find a colony which they prefer.

How committed each GAS is to their colony differs. Some are defensive and loyal, not willing to change their colony even under duress. This can manifest as arrogance and could cause verbal debates between individuals. Others will change often, moving between colonies as soon as one they perceive as better comes along.

Life Cycle







Grading System

Giant armoured serpentids are assigned a letter grade based on the complexity of their job and their aptitude for working with humans.

Grade Job Tier Temperament
A+ High Good
A High Average
A- High Poor
B+ Mid Good
B Mid Average
B- Mid Poor
C+ Low Good
C Low Average
C- Low Poor
D+ Group Good
D Group Average
D- Group Poor
F Fail Fail



  • Works very well with humans.
  • Well acclimated, never strikes out unless in significant danger.
  • Responds to situations with escape or hiding vs. aggressive behaviour.
  • Tolerates humans who are too close.
  • Will communicate verbally when overcrowded.


  • Either skittish around humans or somewhat oppositional.
  • May use threatening behaviour when needed, usually as a secondary option.
  • Only strikes out after repeated threats or requests to be left alone.


  • Often shows aggressive behaviour around humans (buzzing, false strikes, etc.)
  • May respond physically to crowding or unwanted humans who are too close.
  • May strike out after only a single warning.


  • Instigates aggressive physical contact with humans for reasons other than direct crowding or endangered.
  • Charges at humans to close distance in order to strike or bash.
  • Picks up or moves humans without their permission.

Job Tier


High-tier jobs require a large amount of skill and literacy training. They include:

  • Maintainance Technician
  • Roboticist
  • Chemist


Mid-tier jobs require a moderate amount of skill and some basic literacy training. They include:

  • Chef
  • Cargo


Low-tier jobs require minimal skill and no literacy training. They include:

  • Janitor