Minnie's Aunt is a female anthropomorphic mouse.
Description[]
Little is known about that woman, save that she is Minnie Mouse's aunt. In 1943, Minnie had a picture of her in her house, which Mickey Mouse deemed to have a "sourpuss expression". Using the Electro-Box, Mickey thus altered her stern expression to a smile, to Minnie's outrage.
Behind the scenes[]
This aunt of Minnie was only ever seen in the 1943-1944 comic strip serial The 'Lectro Box.
The story does not say whether she is Minnie's paternal or maternal aunt, or if she is even married (although the latter is unlikely, as the character seems to fit the clichéd "spinster" model).