The Siestas are bunny-girl servants summoned by Beatrice. It is said that there is no escape from the Siestas attacks, and they can even locate and bring back a corpse. They have red eyes, bunny ears, and elaborate military-styled outfits. She is named after the .45 Winchester shotgun. Siesta 45 wears a red uniform and has long pink hair tied in two ponytails. She has a serious look most of the time. Her duty is battle control, information gathering and data mining, trajectory calculating and sending it to Siesta 410.

Spoiler

She is the fantasy version of one of the ceramic bunnies that Maria used to play with.