Himari Takakura

高倉陽毬, Princess of the Crystal
The brothers younger evercheerful sister. Himari loves her brothers very much and is constantly smiling so that they will worry less about her illness. After being discharged from the hospital she loses consciousness and dies at a trip to the aquarium. She is revived by a penguin hat bought at the aquariums souvenir shop. When she wears the penguin hat her appearance and personality changes to that of a dominatrix donning a skintight costume and ordering the brothers to obtain the Penguindrum in order to extend her life.