Masae Koyama (小山 まさえ) (35 years old), Minnie in the Vitello and Phuuz dubs and is Misae's older sister. She is still single. Her first appearance took place in episode 130-1 (まさえおばさんが来たゾ). She lives in Kumamoto (Japan) so her appearances on the show are rare. She shares some of the same mischievous antics as Shin-chan and Ginnosuke, though it is possible that Misae learned some of her moves from her. She likes to tease Misae. She teaches Japanese language at an institute.