Marta Rhaulin is a Brazilian voice actress, dubbing director, and singer known for her extensive work on the Portuguese-language versions of numerous anime series and films. Information about her early life and career beginnings is not widely available in English-language sources, though her professional activities are well-documented through her credits. She is recognized for her long-standing association with the Miami-based dubbing studio The Kitchen, which has produced many Brazilian Portuguese dubs for the North and Latin American markets.

Rhaulin's voice work is prolific and spans several decades, encompassing a wide variety of characters. Among her most notable roles is the character Fuko Amachi in the 1999 anime series Let's Dance With Papa, for which she also served as the dubbing director. She is also the voice of the protagonist Nazuna Oikawa in the 2017 anime film Fireworks, Should We See it from the Side or the Bottom?, again taking on the role of dubbing director in addition to providing the lead voice. Her filmography includes a range of other significant anime roles. She voices Kagura in the long-running series Gintama, Cynthia and Delphinium in Blue Dragon, Sally Saeba in Red Baron, and provided the voice for the female version of the titular character in a Locomotion channel dub of Ranma ½. She also had a role in the live-action film adaptation of Tokyo Ghoul.

Beyond her work in anime, Rhaulin is perhaps best known to a wider audience for her work on the Brazilian Portuguese dub of the long-running American animated series South Park. For over a decade and a half, she voiced multiple main characters, including Eric Cartman and Kyle Broflovski, as well as characters like Shelly Marsh and Liane Cartman. Her involvement with the series also extended behind the microphone, as she served as the dubbing director for its first seven seasons. This extensive work on a single series for so many years represents a significant achievement in the field of dubbing, showcasing her vocal range and consistency. A recurring collaboration evident from her credits is with fellow voice actors who are part of the dubbing community in Miami, such as Carla Cardoso, who eventually took over the role of Cartman in South Park, and others like Roberto Leal and Neusa Martinez, who frequently appear alongside her in projects.

In addition to her voice acting, Rhaulin has also had a career as a singer. She received the Platinum Recognition Award and the Latin Disco of the Year Award for her song TIC TIC TAC Toca Fuerte El Tambor. While this demonstrates her musical talent, it remains a distinct achievement separate from her dubbing career. Information regarding her full name has been discussed among dubbing enthusiasts, with sources indicating that Rhaulin is a stage name derived from her real surname, Raulino, and that she is also known as Marta Nogueira.