Decoy

Decoys (from the 2004 film of the same name) are an unnamed, endangered, sexually aggressive reptilian species hailing somewhere from the Belt of Orion, likely an ice world. They require sub-zero temperatures to survive and breed. They came to Earth with the intent of mating with its young male population before taking over the planet.

Background
The Decoys originate somewhere in the Belt of Orion on a planet with sub-zero temperatures. Their gene pool is shrinking, causing them to look for planets whose male inhabitants were suitable for both procreation and domination.

Racial Characteristics & Biology
Decoys are reptilian in their true form, with slimy scales and spikes growing from their spines. While mating, they expel tentacles from their navels, which is located between their breasts, which then enter the male via the mouth to incubate and release the eggs. It is unknown what process the human male's body endures while "pregnant" with the Decoy's offspring, although a successful offspring is half-human, suggesting that the eggs take genetic material from their male hosts during gestation. Unfortunately, the mating process causes the area around the partners as well as the internal body temperature of the human to drop to sub-zero. Causing external and internal freezing, which can prove fatal to humans.

In human form, Decoys generally take on an appearance that fits the feminine ideal of most male adolescence. The one commodity in their human appearance is that their hair is always blonde, with only one exception. Their only physical differentiation when compared to humans is a lack of a navel, as their species does not require umbilical cords to give birth.

Infant Decoys appear as a crustacean creature. During the birthing process, the offspring crawls out of the father's mouth after a 3 day gestation period. This, however, is not the case in Decoys 2: Second Seduction, in which case a full human-Decoy hybrid appears as a large, aggressive, worm-like creature with glowing red eyes, tentacles and a full set of fangs.