The Sailor Animamates was the group of Sailor Senshi that worked for Sailor Galaxia under the Shadow Galactica. The group included Sailor Aluminum Siren, Sailor Iron Mouse, Sailor Tin Nyanko, and Sailor Lead Crow.
In SS continuity, the animamates did not kill the senshi of their homeworlds; they were the senshi of their homeworlds, just known by different names. Example: Sailor Lead Crow was Sailor Coronis before she was forced to Sailor Galaxia's thrall--their names changed. SS continuity runs by the anime and ignores the manga altogether for the stars season.