Vii Zedek is the professional name of Vivian Frenchel, a Brazilian actress, voice actress, singer, and YouTuber born on April 20, 1991, in Jacareí, São Paulo. Before establishing herself in voice acting, she gained initial public recognition as a finalist in a contest to join the television program CQC, which led to subsequent appearances on other TV shows such as Pânico na TV and the Programa da Eliana.

Zedek has built an extensive career in dubbing, providing Portuguese voices for a wide array of characters in anime, animated series, and live-action films. In anime, she is known for her versatility in portraying both male and female characters, often young protagonists or characters with distinctive personalities. Her role as Foo Fighters, also known as F.F., in the anime JoJo's Bizarre Adventure: Stone Ocean stands as a significant credit. She is also the voice of a young Thorfinn Thordarson in Vinland Saga. Her work within the same studio productions includes voicing Tsuyu Asui, also known as Froppy, in the film My Hero Academia: Heroes: Rising and other entries in the franchise. She voiced Mumei in Kabaneri of the Iron Fortress: The Battle of Unato and Mac in Bakugan Battle Planet. Another notable role is Malett in the film Seven Days War.

Her portfolio extends to other major anime franchises. She voices Himawari Uzumaki in Boruto: Naruto Next Generations and the related film. In the Dragon Ball Super: Broly film, she voiced a young Broly and a young Son Goku. She has multiple roles in One Piece, including Miss Monday in the new dub, Shirahoshi, and Chimney. Zedek also voiced Iruma Suzuki in Welcome to Demon School, Iruma-kun, Kanata and Nichika Ubuyashiki in Demon Slayer: Kimetsu no Yaiba, and Kabasuke in Aggretsuko. Her work is not limited to anime; she is also the Brazilian Portuguese voice of Miles "Tails" Prower in the Sonic the Hedgehog live-action films.