Smudge is a kittypet, the former neighbor of Firestar when he lived as a kittypet named Rusty. The two were close friends as kittens, and though Rusty's departure to join ThunderClan left Smudge saddened, he ultimately accepted his friend's decision. Smudge is a kittypet and a good friend of Rusty. He is seen greeting Rusty while he sits on the fence of his Twoleg's nest. Smudge wonders if he will go out into the woods, and he disagrees with Rusty when he says that he is. Smudge mentions how another kittypet, Henry, went into the woods and caught a robin. Rusty refuses to believe him as he knows Henry to be fat and lazy. He claims that Henry told him of dangerous animals and wild cats in the woods, yet he gives up with trying to persuade Rusty to stay, and goes back down to his own garden, and Rusty decides to go into the woods anyway.