Leonard fulfills the dual role of butler and guard, assigned specifically to support Philia Adenauer upon her arrival in the Parnacorta kingdom. Alongside the maid Lina, he voices concern over Philia's work ethic, observing that she possesses no concept of proper rest after overworking herself extensively in her previous homeland. Leonard carries himself with a formal and dutiful demeanor, insisting on flawlessness in all aspects of service. His responsibilities extend beyond traditional butlery to include capable combat skills as a guard. He demonstrates resourcefulness, taking initiative to devise unspecified projects or solutions. Leonard assists Philia in adapting to her new environment and understanding a more balanced way of life.