An unidentified alien race; most of the population are slaves ruled by an aristocratic elite; these slaves are surgically inserted into gigantic fighting machines like batteries, and are then sent to invade other worlds, using their mysterious Green Mist to travel the multiverse; but when they target the version of Earth that is home to the Baskilians, the Kektrish, and the Nephret, the Strangers bite off more than they can chew.
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