Evil Scorpion Femssassins from Space

Their agents are everywhere, masked in thick shrouds of sex pheromone secretions and plotting, evil deadly deeds against earth-borne freelance contractors. Carefully selective in their targets, ranging in skill and mystical allure, you should not underestimate this renegade group and their conquest (best documented in the arcade game "Galaga" wherein they employ a race of slave robot bees to do their bidding)