An alchemist specializing in bio-alchemy, she serves as an assistant for Albedo, the head alchemist of the Knights of Favonius. She has fair skin, amber eyes, light green hair that is chin-length except for a section at the back of her head that goes down to her hips. She wears a pair of dark brown round spectacles. Sucrose has pointed light green animal ears which she tries to hide with her hair; the animal they correspond to is unknown and it's the subject of some of Sucrose's investigations.