Marietta Muir is a character appearing in Atelier Ayesha: The Alchemist of Dusk. Marietta is a store clerk at the Black Cat's Path in Viezerberg. She constantly worries about her boss Harry, and has taken a lot of responsibility for the store in his place, as Harry is rarely seen working. She takes her job as a trader seriously, and is always looking for business opportunities to improve the store. Completing the "sparkles" request and helping Marietta out is required for the "Girl's Gathering" ending.