Leo is a supporting character in the anime Scrapped Princess, formally named Leopold Scorpse. He is the eldest son of Duke Scorpos and the heir to his father's territory, making him a noble by birth. From a young age, Leo has been raised with the dream of becoming a great and noble knight, someone who rescues damsels in distress and upholds righteous justice. His background as a highborn youth striving for knighthood shapes much of his actions and outlook.

In terms of personality, Leo is earnest, idealistic, and deeply sincere, but he is also clumsy and inexperienced. His chivalric ambitions often outpace his actual combat skill, and his first attempts at heroics tend to backfire. Despite this, he possesses a strong sense of justice and a kind heart. He is quick to fall in love with Pacifica Casull upon first meeting her, and he frequently proposes marriage to her, though his advances are generally treated with good-natured exasperation by the Casull siblings. His goofy demeanor provides comic relief, but beneath it lies a genuine desire to become someone worthy of the knighthood he so admires.

Leo's primary motivation is to understand and embody true chivalry. He is driven by the need to prove himself as a protector of the weak and a force for good. After an early encounter with Pacifica and her guardians, he decides to accompany them for a time, hoping to learn what it means to be a knight. He seeks out the retired knight Sir Barrett, who once faced a moral crisis involving the Scrapped Princess, and asks for guidance. Leo's motivation is not selfish glory but a sincere wish to live up to the ideals of honor and protection.

His role in the story is that of a recurring ally and comic foil. He travels with the main group for several episodes, providing lighthearted moments and a contrast to the more serious Shannon and Raquel. His presence also allows the story to explore the theme of chivalry in a world where the truth about the prophecy and the Peacemakers is far more complex than simple knighthood. Later, he parts ways with the group to reflect on the lessons he has learned and to continue his personal quest for knightly virtue.

Key relationships include his unrequited affection for Pacifica Casull, whom he vows to protect at all costs. He also forms a companionate bond with Shannon and Raquel Casull, who initially view him as a nuisance but come to respect his sincerity. His encounter with Sir Barrett is crucial: Barrett's advice that chivalry is truly tested when one must kill someone powerless forces Leo to grapple with the grim realities behind his ideals.

Leo undergoes notable development over the course of the series. He begins as a naive and bumbling would-be knight, but through his experiences, especially his conversations with Sir Barrett and his exposure to the dangers surrounding Pacifica, he matures. He learns that knighthood involves more than flashy rescues and that it requires confronting difficult moral truths. While he never completely loses his earnest nature, his idealism becomes tempered with a greater understanding of the world's complexities.

In terms of abilities, Leo wields a large sword and rides a horse named Parabellum. He has some basic training in swordsmanship, but compared to accomplished fighters like Shannon, he is still a novice. His real strength lies in his unwavering resolve and his willingness to stand up for what he believes is right, even when he is outmatched.