Deerstar is a huge, tall, fleet-footed dusky brown tom with a short, stubby tail, long legs, and ice-green eyes. He is loyal, clever, and peaceful, and will protect his Clan to his last breath.
- Deerstar (then Deerkit) was born to Dewfang and Shininggaze. His mentor was Ferretpelt, the TwolegClan deputy, and he soon became a warrior. After Ferretpelt retired, he was named the new Clan deputy. Two moons later, after the former leader passed away, he was given nine lives, and became the new leader.
- Deerstar is the current TwolegClan leader, with Wolftalon serving as his deputy. He is first seen having a meeting with Wolftalon, Morningfeather, Goosepaw, and Lynxtail. Since the rogues are attacking hunting patrols more often, Deerstar decided it was time to start preparing for a battle. He says that every cat must stay at the Sky Mansion, as it is too dangerous for them to be scattered about the territory. Wolftalon then suggests that they begin night patrols, and that they start keeping watch at the Watch Trees at all times, and Deerstar agrees.
- He is TwolegClan's thirteenth leader.
- He once had a mate, but she died of unknown causes, and her name is unknown. He seldom speaks of her.