Main character from [[Zero no Tsukaima]].  A [[tsundere]] with a S&M fetish.  Her familiar is [[Hiraga Saito]], whom she treats like a disobedient dog. 

She has [[pink eyes]], [[small breasts]]/[[flat chest]], and [[long hair|long]] [[pink hair]] with [[bangs]], [[sidelocks]], and [[hair between eyes]]. She usually wears a [[collared shirt|collared]] [[white shirt]], [[bolo tie]] [[red ribbon|red]] [[neck ribbon]] with a [[pentagram]], [[black skirt|black]] [[pleated skirt]], [[black thighhighs]], a [[black cape|black]] [[hooded cape]], and [[black footwear]].

Voiced by [[Kugimiya Rie]] (JP) and [[Cristina Valenzuela]] (EN). Her name was inspired by the historical figure of the same name, namely "Louise de La Vallière":[https://en.wikipedia.org/wiki/Louise_de_La_Valli%C3%A8re], who also appeared as a main character in [i]The Vicomte de Bragelonne[/i] by Alexandre Dumas.
ルイズ・フランソワーズ・ル・ブラン・ド・ラ・ヴァリエール ルイズ 루이즈