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.

A Mexican voice actor. He is known for being the Latin American Spanish voice of Yoda and Lando Calrissian in _Star Wars_, adult Simba in _The Lion King_, Jam in _Toy Story_, Shaggy in _Scooby-Doo_ and Dr. Doug Ross in ER .
He is the recurring dub voice of George Clooney and Jackie Chan.

He is the father of [Arturo Mercado Jr.](https://anilist.co/staff/117161/Arturo-Mercado-Jr)

__Non-Anime Roles:__
- Professor Pester (Viva Piñata: Party Animals)
- Torbjörn (Overwatch) 
- James Cutter (Halo Wars 2)

Percerin