|Current:||Cats of the Cressida Lock|
|Sinestra the Courageous, Defender of the Territory|
|Living:||The Tygrine Cat|
Sinestra (Full name: Sinestra the Courageous, Defender of the Territory) is a tabby she-cat.
- Sinestra is first mentioned by Sparrow. Sparrow asks Binjax and Ria whether or not if she was still a good mouser.
- Later, Sinestra protests against letting Mati to become one of their kin, and Sparrow introduces her quickly as Sinestra the Courageous, Defender of the Territory, along with being Binjax's and Ria's mother. Sinestra is later seen whispering with disapproval with Arabella.