Auguste is the personal butler of Luvia Edelfelt in Fate/kaleid liner PRISMA☆ILLYA.

Auguste is very dutiful, undertaking a number of tasks, including less reputable responsibilities such as forging documentation for Miyu Edelfelt and Chloe von Einzbern. He has taken a specific interest in appraising Shirou Emiya due to Luvia's attraction to him, checking his physique, asking about how Shirou feels about his mistress, and asking him if he is "prepared."