Sasuke

Sasuke is a dark gray tom with a black tuft of fur on his head, and gray eyes that can turn to black when he becomes evil and goes on a killing spree.

History
He first appears, walking in the alley with Sakura and Naruto. He follows Lupin in RiverClan's camp, when she warns the Clan about a evil group of cats.

Later, his eyes grow black and he attacks Catherine. Bell pulls him of, and asks him why he attacked her. He leads her to Sasuke's Den, and tells her that his father was killed as a kid. He tells her his brother turned evil and threatened to kill him, so he has to run away.

He meets Flare, Forest, Mallowleaf, Crackle, Princess and Lightning. They tell him of two cats, Aero and Jerry, who are taking over Twolegplace and are killing inoccent cats. He leads them to his den, and then they plan to destroy them.