Batako-san, also known as Butterko, acts as Uncle Jam's assistant within the bakery. She maintains a kind, caring, and optimistic personality, rarely arguing. Her duties encompass baking, cleaning, laundry, and delivering goods. She also applies her skills in stitching and sewing, frequently repairing Anpanman's torn cape and crafting other items like dresses. Present during Anpanman's creation by Uncle Jam in the earliest episodes, she participated in raising him, assuming a motherly role. This involves replacing Anpanman's head when damaged or depleted and maintaining his cape. Her relationship with Uncle Jam reflects familial care and loyalty, though their initial meeting remains unspecified. She named the dog Cheese, advocated for keeping him, and often translates his barks; they are frequently seen together during bread deliveries. She previously had a long-distance relationship with Omusubiman, no longer explored in the narrative. Her appearance features rosy cheeks, black eyes, a small round nose, and spiky black hair that shortened during the series. She wears blue overalls over a white vest and a chef's hat, which conceals a bowl-cut hairstyle when removed. Early concept art indicated a scrapped origin where a young Anpanman found her as a baby in the woods. Her role in the film "Eiga Soreike! Anpanman Fuwafuwa Fuwari to Kumo no Kuni" is not detailed in the available information; the narrative instead focuses on Anpanman, Fuwari, and Dokin-chan's efforts to save Cloud Country.