Knuckles is a red mobian echidna with red and yellow shoes and white spiky mittens. Fiercely loyal to Angel Island and the Master Emerald, he is a headstrong and powerful protector with a hot temper. Driven by a single-minded desire to keep the island safe, even shattering the emerald to prevent its misuse. While he's known for his strength and unwavering devotion, he can be gullible and quick to violence. Despite his seriousness, Knuckles isn't much unlike Sonic; he is cocky and big-mouthed.