Chigs

Chigs (sometimes referred to as Glyphs) are a fictional alien species in the science fiction television series Space: Above and Beyond. Chig is not the species' name for itself, but rather a human-coined nickname (referencing the chigoe flea).

Chigs are humanoid, bipedal aliens that serve as the primary antagonists in the series. They appear to be unable to survive in atmospheres that support human life; they are often seen wearing armored life-support systems that provide them with the methane they need to breathe. In addition to providing methane, Chig armor suits also have a built-in suicide mechanism that is triggered when the helmet is forcibly removed, quickly dissolving the Chig inside. In the episode "Choice or Chance", a Chig is apparently able to take human form and interact with other humans in an ordinary atmosphere until killed, when it turns to slime in the manner of earlier Chig deaths . How this is achieved is not explained. Distinguishing characteristics of the un-armored Chig are small black eyes set deeply in the head, pink skin, a lack of a prominent nose, a protruding upper jaw, and structures resembling gills to either side of the mandible.

The series provides little concrete evidence about the Chigs until the last two episodes, choosing to initially present the Chigs as a traditional science-fiction alien enemy out to destroy humanity. Throughout the series, the writers provide several small clues regarding the nature of the Chigs, their motivations, and their biology before devoting the last two episodes of the series to revealing the possibility that Chigs and humans are related species.

As the series presents it, known human contact with the Chigs begins when an unmanned probe, launched by the military-industrial corporation Aerotech, lands on a celestial body designated "celestial body 2064K" (later given military designation 'Anvil'), the single moon orbiting the Chig homeworld. This moon is sacred to the Chigs because it is where life originated via panspermia and where Chigs still go to be born. The Chigs actually evolved from bacteria that originated on Earth billions of years ago: an asteroid collision threw these bacteria into space, carried by meteorites, where they eventually landed on the Chig sacred moon. Life on Earth had already advanced to the eukaryote stage of development, and the rate of evolution proceeded slightly faster for the bacteria on their new world, allowing life there to evolve to the point that it could produce the sentient Chigs at roughly the same time that modern humans evolved.

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