Blanca is Vanilla's magical familiar. She is a mouse and hates being called a rat. She is extremely helpful to Vanilla and giving her advice on how Vanilla can get more hearts. She loves Vanilla and hates Chocolat openly and often laughs at Chocolat's plans. She says '-chu' at the end of her words which is mouse-like in Japanese.

In the manga

Her real name in English is Libbie/Libby and Blanca is Spanish for white (feminine form of blanco).