Aunt Oota is a minor character on Oobi.
Aunt Oota is the aunt of Oobi and Uma. She is also either Grampu's daughter or daughter-in-law. She never makes an appearance in the series, but is mentioned in the "Recital!" episode when Grampu explains that Uma is visiting Oota for the day.
It is unknown what Aunt Oota looks like, for she has never been shown. It can be assumed that she bares a slight resemblance to her niece and nephew.
Aunt Oota never appears physically, but is mentioned in one episode of Oobi: "Recital!"