Petra Leyte is a young girl who works as a servant at Roswaal L. Mathers' mansion. She is one of the few survivors from her village and was taken in by Roswaal after a tragic incident. Despite her traumatic past, Petra maintains a bright and cheerful demeanor. She forms a close bond with Subaru and becomes one of his loyal supporters. Petra is known for her innocent nature, energetic personality, and genuine kindness toward others. She often seeks companionship and friendship, particularly from those she trusts. Throughout the series, she demonstrates remarkable resilience and emotional growth as she adapts to her new life at the mansion.