Mass Effect: Stardust
“Evolution cannot be stopped.”
Living beyond the Omega-4 Relay in the Terminus Systems, the mysterious Collector species is glimpsed so rarely as to be taken for a myth by most in galactic society. In reality, Collectors are human-sized insectoid bipeds and can resemble massive winged beetles. They are a terrifying force in the galaxy, responsible for the clandestine and unreported murder of hundreds of thousands; they have begun to focus on humans almost exclusively in their more recent attacks, hitting distant outposts and leaving no evidence of their presence.
Collectors generate permanent stasis fields around themselves, creating nightmarish red-shifted energy fields. In battle, they hold position whenever possible, relying on their aggressive biotics and nearly limitless power. Several types of bipedal Collectors have been identified, including minions, defenders, zealots, assassins, and artillery-operators.
Acting together, Collectors have imprisoned entire cities in stasis. While no definitive forensic accounting exists to explain the fate of those imprisoned, leading speculation is that victims are harvested for scientific experimentation and neuro-biological repurposing.
Whatever their intent, the Collectors are extremely dangerous. While they can be pragmatic and are willing to trade and bargain with Citadel races, they have their own mysterious agenda, and one can be sure that they only cooperate when the benefit to them outweighs the benefit to their partner.
(there is almost zero general knowledge about Collectors available to PCs, and all attempts to gain knowledge about them without firsthand observation will require a “Formidable” Xenology or Traverse Knowledge check)
“You do not yet comprehend your place in things.”