The Drainers

They are a highly advanced and technologically sophisticated species with the ability to conquer other civilizations and absorb their energy resources. It is unclear whether they are a biological lifeform or a type of machine intelligence. Still, their ability to adapt and evolve into different kinds of Drainers suggests they have a high level of flexibility and intelligence.

The fact that they are often seen wearing black suggests that they prefer this color, which may be related to their visual spectrum or a deliberate choice. It is also possible that their black shielding is a defensive mechanism or a way of concealing their true appearance from other species. Overall, the Drainers sound like a formidable and mysterious species, and their motives and methods for expansion are unknown.