Tenctonese

The Tenctonese; referred to as Newcomers by some Humans; are a race of bipedal sapient humanoids indigenous to the planet Tencton, which are known for their genetic enhancement of certain members of their own species, for the express purpose of creating a subspecies of Tenctonese slaves that are distributed amongst their various colony worlds. A significant group of these slaves ended up on Earth, where they attempted to intermingle with the local Human culture and properly integrate themselves into their adopted home. They were considerably more successful at this than the Prawn were years earlier in March of 1982, though they, too, met with ample amounts of discrimination from the local populace.

History
The Tenctonese arrived upon Earth in October 19, 1988 when the six-mile-long slave ship Gruza - a spacecraft from their homeworld transporting 250,000 Tenctonese slaves - crash-landed in the Mojave desert, right outside Los Angeles, California. These slaves were especially bred and genetically engineered for hard labor in any environment; their slavers, whom could be identified by their jagged wrist tattoos, used hallucinogenic nerve gases to induce fear and keep the slaves submissive. This exploitative act would lead to the slave subspecies' culture and mythologies which personified roles for Tenctonese "demons". However, these hallucinogenic gases intertwined with their cultural mythology and the conditions of their enslavement, and therefore several years had to pass before any Tenctonese could even begin to recall there having been anyone on the slave ship to rebel against or even that there had been rebellion attempts such as the Udara faction.