Lionheart

Lionheart is a golden tabby tom with thick fur. His fur has been likened to a lion's mane.

Into the Wild
Lionheart mentors Graypaw, and is one of the cats to first meet Rusty, the kittypet. Later, after Redtail dies, he is elevated to the position of deputy. He dies in a fight with ShadowClan later.

Further Activity
As a cat in StarClan, Lionheart has interacted in dreams with a few ThunderClan cats.

Firestar
Lionheart appears to Firestar when he is receiving his nine lives. He gives the new leader courage with his life.

Leafpool
Lionheart appears to Leafpool, Firestar's daughter, in Sunset. He appears with Bluestar and Yellowfang in one of Leafpool's dreams, and the trio tell her her life is to change unexpectedly to her.