Morningstar

Morningstar is a tom with an unknown description, an Ancient ThunderClan leader

In Battles of the Clans
Morningstar is an ancient ThunderClan leader. He wants the WindClan leader, Rabbitstar, to stop hunting prey on their land. Leafstorm, the deputy, wants to die fighting in battle. Morningstar is not letting his cats fight. He wants peace for his clan. Later on, his deputy dies, and a cat from StarClan, Songbird, tells him to let his cats fight, and so he does.