Jaione Insausti is a voice actor known for her work in Spanish and Basque language dubs of Japanese anime series and films. Her career is characterized by a wide range of roles across various genres, from mainstream franchises to more niche titles.

In Basque-language dubs, Insausti has provided voices for several prominent characters. These include Sophie Senoo across the Ojamajo Doremi franchise, including Mo~tto! Ojamajo Doremi, and Ayumi Yoshida in multiple Case Closed films. She has also voiced Roll.EXE in MegaMan NT Warrior and Sonia Sky in Megaman Star Force. Her work in the Dragon Ball franchise includes roles such as Bra and Gine in Dragon Ball Super: Broly, Videl in Dragon Ball Z: Battle of Gods, and Marron in Dragon Ball Z: Resurrection F. Additionally, she has voiced Tashigi in One Piece and Nanako Ohara in the Basque dub of Shin Chan.

In Spanish dubs, Insausti's portfolio is similarly extensive. She is credited as the voice of Pinoko in the Black Jack OVA series and as Kisaragi Ninomai in the various Happy Lesson anime adaptations, including the television series, Happy Lesson Advanced, and Happy Lesson The Final. She voiced Nadia in the series Nadia: The Secret of Blue Water and its film adaptation, as well as Haruko Akagi in Slam Dunk. In the Legendary Armor Samurai Troopers series, she played Emma, also known as Nasuti Yagyu. Her work also includes roles in the Viper GTS OVA as Mercedes, and in the Iczer Reborn OVA as both Candy Barts and Nagisa Kasumi. Insausti's credits also encompass the role of Kirika Yumura in Noir, Melissa in Rune Soldier, and both My Melody and Kanade Yumeno in Onegai My Melody.

Her film work extends to the 2022 animated feature Unicorn Wars, in which she is credited as part of the voice cast. Her body of work demonstrates a sustained career contributing to both Spanish and Basque-language anime localization.