Crewmate

An unnamed species of diminutive alien humanoids, identified as Crewmates to distinguish them from the monstrous Impostors plaguing their space program. This space program is the only observed aspect of Crewmate society.

Biology
Crewmates are significantly different from anything like a human, but share the same dietary appetites (though they might be unable to eat solid food), atmospheric needs, and blood types of all things. The average height of a crewmate is 3 feet and 6 inches tall, comparable with a child, and are about half that size in width.

Apparently, they also have hidden floating hands, possibly inside their bodies which they put out to perform tasks.

Their established appearance is identical to a spacesuit, but doesn't provide its own oxygen, and is suggested to be ineffective against hazardous environments or substances, raising questions on the suit and backpack's purpose and nature. Since they drink through osmosis, it's possible that full body clothing is needed to keep them from accidentally drinking oil or other hazardous liquids. However, crewmate gore is the same color as their "suit", giving the implication that all of this is just translucent and heavily pigmented flesh.

A stereotypical femur inside their torso is the only bone in their body, suggesting that other parts of their body are supported through a hydroskeleton like many invertebrates. The real purpose of the bone, then, would only be to house the marrow which produces its blood.

What houses their brains? Many answers can be given, it could be stored on their backs like an Irken's PAK, or it's distributed throughout the innards in a series of ganglia, or they could just have a cartilage skull. Whatever the case, it is fatal to disrupt whatever organs are lying behind that visor. And a deceased one is inside an immortal soul, an intangible replica of their living self. No machine will notice the difference, but they are completely forbidden from direct interaction with the living.

Culture and society
This species prefers to communicate by written language, and might not have a spoken one. They are also known for killing their own members with no apparent remorse, although this could be due to an extreme focus on their survival, or merely unable to be seen due to their inexpressive space suits and bodies.

The majority of their technology is identical in appearance and sophistication to its human counterparts. Crewmates possesses all the necessities of easy interstellar travel, and their teleportation technology can move living beings into a moving spacecraft. They also have the technology to stabilize seismically active surfaces. They also have computers so advanced that with a simple touch you can change them, and send you things like clothes, objects, animals, among others all by computer. They also have the technology to identify Impostors from other Crewmates, but cannot use this tech unless tasked to do so.

The purely scientific aim of the Crewmate's space program makes it unprepared for the gruesome events which are plaguing it. It follows an anarchic form of labor organization, where all members are given an equal amount of labor by their electronic systems without hierarchy. One limit of this system is that it doesn't reveal Imposters through anything other than statistical oddities.

Several species have been kept as pets by Crewmates:


 * A domesticated variant of the Headcrab known as a "bedcrab".
 * Squigs, which they don't know much about.
 * The Brain Slug
 * Hamsters
 * A cyan-haired, one eyed, breed of alien Dog. Treasured.
 * Small flying saucers
 * Simple robots
 * "Mini crewmates", implied to be the children of their species and not pets.
 * We hope that the miniaturized humans following them aren't, as well.

Appearances

 * Among Us                                                                                      
 * Henry Stickmin: Completing The Mission