Shadowstar

Shadow is a thick-furred black she-cat with green eyes.

Secrets of the Clans

 * Shadow was the founder of ShadowClan and the first ShadowClan leader. She aided the other original leaders, Wind, Thunder, Sky and River to create the warrior code. She is described as a strategist, ferociously independent; even to the point of distrusting her own Clanmates, and bold in battle. Her bold nature is shown when she is the first cat to declare that she can lead all the cats in the forest. She was the first of the original leaders to lose her ninth life, in a battle she started with another Clan.

Long Shadows

 * She appears in the prologue with Thunder, Wind, and River. Midnight, the badger, is there and they are arguing with her about letting Sol destroy the Clans they created.

Erin Hunter Chat

 * In an Erin Hunter Chat, Vicky revealed that Thunder, Shadow, River, Wind and Sky did not take "-star" on the end of their names, because the tradition had not yet been established in their time.