The Sister Hound is a robotic companion designed with a sleek, predatory form, resembling a mechanical canine with sharp, angular features. Its body is constructed from a combination of polished metallic plates and glowing energy conduits, giving it a high-tech, menacing appearance. The hound's head features a single, piercing eye sensor, and its limbs are equipped with retractable blades, emphasizing its role as an aggressive combat unit.