Scourge is a small black tom with one white paw, ice-blue eyes, glossy fur, and a torn left ear. He has a purple collar studded with teeth from dogs and cats, and claws reinforced with dogs' teeth.

Scourge is born as Tiny to Quince, a kittypet. He lives in torment from his siblings, Ruby and Socks, and after they tell him unwanted kittens get thrown in the river, he escapes, not wanting to meet that fate. Tiny finds himself in the forest and is happened upon by a patrol consisting of Tigerpaw, Thistleclaw, and Bluefur. Tigerpaw is instructed to attack Tiny for trespassing and the small tom survives only due to Bluefur's intervention. Tiny escapes and vows to never to forget the tabby apprentice. Arriving in the Twolegplace, Tiny is told he is a kittypet and, in an attempt to remove his collar, gets a dog tooth lodged in it. He lies to the rogues that he fought and killed a dog so that he can eat. His story spreads and Tiny is taken by Bone and Brick to fight another dog that is causing cats to go hungry. He goes to fight the dog, but, it is scared of his shadow and runs off. He renames himself Scourge from this moment on and is named as the leader of the Twolegplace cats. Securing his lead, Scourge kills a rogue to prove to his cats that he was a fit leader. He later banishes his littermates when they turn to him for help. Scourge meets with Tigerstar and Boulder, the tabby tom asking for his help. Scourge agrees and takes his cats to the forest and following Tigerstar's betrayal, the tom kills his old enemy, having never forgotten what he did to him many moons prior

one day you came to his clan

What are you doing in bloodclan territory?!