Johnathan Xavier "Johnny" Test is the titular protagonist of the series of the same name. He is a mischievous 11-year-old boy also known for his love of anything he considers to be awesome. He's the only and youngest son of Hugh and Lila and brother of Susan and Mary. He can live any kid's dream, only to find that some dreams aren't worth living. He is usually seen with his partner-in-crime and best friend Dukey, his genetically altered dog. He also redeems Johnny Coupons to his sisters in exchange for assisting them in their daily problems. When redeemed, he does their tests for free. Johnny and his sisters are often the cause of some problems in Porkbelly.