Scourge

Scourge, originally named Tiny, was born to a kittypet family alongside his siblings, Socks and Ruby. He was bullied by them and eventually fled to the Twolegplace after a near-fatal encounter with Tigerpaw, a ThunderClan apprentice who is now Tigerstar. In his quest for power and respect, Tiny attempted to break free from his collar using a dog's tooth, which became embedded in it. He then lied about killing a dog to gain the respect of other cats, adopting the name Scourge and rising to become the leader of BloodClan.