__Height:__ 158 cm (5'2") 

The Princess of Tristain. She is loved by her nationals and is also an old friend of Louise. Later, she becomes the queen of Tristain and decides to defend Tristain from the Albion invasion after the assassination of the Albion prince.  She is named after Henrietta Anne, the youngest daughter of Charles I of England and sister of Charles II of England.  

~!She has a crush on Saito.!~

Louise is a magician at the Tristein Academy, dubbed with the nickname "Zero Louise" due to her inability to effectively use her magic properly, resulting in zero successes. An upcoming test at her academy requires her to summon a familiar, a servant and partner to support her as a magician. Despite desiring a familiar that would be superior to her constantly mocking classmates, Louise ends up summoning Hiraga Saito, your average Japanese boy. Even with Louise and Saito both unwilling to accept each other, they have no choice. Louise cannot attempt another summoning and Saito cannot return to Japan, and so their life together begins. Based on the novel by Noboru Yamaguchi.

__Non-anime roles:__
- Shenhe - Genshin Impact (VG)
- Sugar - Goddess of Victory: Nikke (VG)
- Dikke - Reverse: 1999 (VG)
- Bianca - Punishing: Gray Raven (VG)

**Andrea Echeverría Arruti** was a Mexican voice actress known for being the Latin American Spanish voice of Violet Evergarden, Diamond Tiara in _My Little Pony: Friendship Is Magic_, Neeko in _League of Legends_ and Anne Shirley-Cuthbert in _Anne With an E_.

This sequel is a continuation of the previous season, not long after the war. Louise and Saito seemingly getting along now since she knows that he had given up his only chance to return to Tokyo for her. The story continues as Louise begins to use Void Magic from a mysterious secret book she had received from her majesty Henrietta, while a new villain has appeared in town causing trouble.
 
(Source: Anime News Network)

The fourth and final season of The Familiar of Zero. Saito and Louise feel their bond deepening as the days go on, and they feel it might be time to take the next step in their relationship... But before that, the Queen has a mission for them. She sends them to the pope, who has both Louise and Tiffania become holy maidens. And with all the interruptions around, by both friends and foes, Louise and Saito's love will be tested to the limit.
 
(Source: Anime News Network)

Following Saito's heroic actions in the War with Albion in season two, Saito &amp; Louise return to Tristain, only to have the runes which bind Saito &amp; Louise disappear. Saito &amp; Louise struggle with a relationship no longer defined as Master &amp; Familiar, as they search for an Elf who has the power to restore the dead to life, and may hold the key to understanding Saito's loss of the Gandalfr's power.
 
(Source: Anime News Network)

DVD beach episode of Zero no Tsukaima: Princesses no Rondo. Also known as episode #6.5.

The continent of Halkeginia is tumultuous--a place where the various kingdoms, princedoms, dukedoms, and fiefdoms strive against each other to expand their domains. They nobility scheme and plot among themselves to gain influence to their lieges or to even foreign lieges. In the middle of Halkeginia is the small but important kingdom of Tristein. The most notable fact about this kingdom is the Tristein Academy of Magic where nobility from all over the world come to study magic so they can become magi. Although friendships will form across national boundaries at this school, will they survive the politics and games of the world at large once they leave? 
Louise is a student at Tristein Magical Academy. She is known to be quite a screw up when it comes to her magic. One day, a ceremony takes place where each student is to call forth a being or entity that will become his or her familiar. For Louise, her familiar comes in the form of a boy named Hiraga Saito. Somehow, he managed to get transported from his world into hers, and shortly after became her familiar.

In a world where sorcery reigns supreme, bumbling witch-in-training Louise Francoise le Blanc de La Valliere is known by her classmates at the Tristain Academy of Magic as “Louise the Zero.” During an important coming-of-age ritual, when each student must summon a lifelong familiar, Louise proves herself klutz when she mistakenly conjures a teenage boy from Earth. Now, whether they like it or not, Louise and her unwilling servant, Saito, are bound to each other by the laws of magic for all eternity!
 
(Source: Seven Seas Entertainment)

War rages on between Tristain and Albion, and the inept mage Louise has a new top-secret mission. But before she can take on the enemies of her country, she’ll need to get past an even tougher opponent — her family. Can Louise convince her dismissive older sister that she’s not a Zero anymore?

Saito and Siesta get dragged along for the ride, and seeing Louise at home in her family’s extravagant palace makes them both rethink the crushes they’ve been nursing. With social status pushing Louise and Saito apart and raging hormones pulling them together, a love triangle like this can only end in explosions!
 
(Source: Seven Seas Entertainment)

Henrietta de Tristain