Blackstar is a large white tom with jet black paws, darker ears, and amber eyes.
- His warrior name was Blackfoot, due to his jet-black paws.
- He was the deputy of both Brokenstar and Tigerstar.
- As described by Sorrelkit, he was seen mingling with Darkstripe in ThunderClan territory.
- Was banished from ShadowClan for launching an attack on ThunderClan.
- Russetfur, Brokenstar, and Clawface were exiled too.
- He fought against the Dark Forest
- Lost a life in battle
- His sister is Fernshade.
- His brother is Flintfang.
- His nephew is Badgerfang.
- His mother is Hollyflower.
- He comes from a long line of polydactyl cats.