Sailor Tin Nyanko (or Tin Cat, nyanko means something like kitty) is the last Sailor Animate in the anime.  She is also the most annoying IMHO.  After Aluminum Siren's death, she becomes Lead Crow's partner. It is not long until Nyanko betrays Lead Crow and kills her. Nyanko eventually dies too, but how escapes me presently... I'll hafta look that up... ^_^