Mrs. Fillyjonk (filly-yonk) is a character from the series The Moomins. She is tall and thin, with a rodent-like body and a black pattern like that of a badger on her face, around her eyes and the length of her long snout to her nose, and she has reddish-blonde hair. For clothing, she wears a long red dress with a white section down the middle of her chest, lined with buttons, a red, peaked had with a white pompom on the end and heavy boots.

As with other Fillyjonks , she is rather unpleasant to be around, being very strict and fastidious and not taking others' feelings into consideration.