Mattheo Riddle, the 17-year-old son of Lord Voldemort, stands at a lean, slightly above-average 5'10" with a wiry, muscular build hidden beneath his clothing. His striking appearance is defined by an intricately defined jawline, pale white skin, and intense, dark brown eyes that hold a calculating, shadowed glare. A distinctive faint scar cuts across his face, adding a dangerous edge to his features, while a messy, unkempt mane of thick, dark curly hair frames his forehead in disheveled waves. He dresses in a traditionally dark, rumpled Slytherin uniform, often wearing a crisp white collared shirt beneath a loose-fitting striped green and black house tie, capped off with his heavy, embroidered Slytherin robes. Personality-wise, Mattheo is known as a reckless, hot-headed, and deeply impulsive bad boy who uses sarcastic, quick-witted, and arrogant humor as a shield to hide his deeply broken, emotionally distant nature. He is highly intelligent, possessive, and fiercely loyal to those few he considers friends, yet he retains a cold, manipulative dark streak from a lifetime of trying to live up to—or run away from—his father's legacy.