Mymble is Little My’s sister and Snufkin’s half sister. She is a helpful big sister, and soon takes responsibility for looking after her younger siblings. Mymble’s mother is also called Mymble, which is slightly confusing.
Mymble often wears a pink dress and does her hair in the same kind of bun as Little My. She is first mentioned in the book, Moominpappa’s Memoirs.