Gustavo Nader is a Brazilian actor, voice actor, and dubbing director, recognized for his extensive work in localizing international films and television series for Brazilian Portuguese audiences. Born Gustavo Nader Cabral de Freitas on June 24, 1982, in Rio de Janeiro, Brazil, his career in voice acting began in his youth after receiving encouragement from neighbors who were also professional voice actors. He subsequently pursued training in theater and direction, which laid the foundation for a multifaceted career spanning dubbing, live-action performance, and voice direction for video games.

Within the realm of anime, Nader has contributed his voice to several notable titles. He voiced the character Matsumoto in the science fiction series Vivy -Fluorite Eye's Song-, an AI from the future central to the story's plot. He is also credited with providing the Brazilian Portuguese voice for Hajime Aoyama in the anime Ghost Stories, a role that places him within the cast of a series known for its distinct and culturally adapted English dub. Additionally, his work in the Pokémon franchise includes voicing Ash Ketchum in the film Pokémon: Jirachi Wish Maker and the character Cross in Pokémon the Movie: I Choose You!.

Beyond anime, Nader's dubbing career encompasses a wide array of characters in live-action and animated productions. He is the official Brazilian voice of James "Jimmy" Olsen in DC animated features, Leonard Hofstadter in The Big Bang Theory, and has voiced characters such as Ron Stoppable in Kim Possible, Eddie in the Ice Age franchise, and Hi Five Ghost in Regular Show. In addition to voice acting, he works as a dubbing director and has appeared in Brazilian feature films, including portraying the comedian Zacarias in the biographical film Mussum - o Filmis.