Stephen Root is an American actor with an extensive career in film, television, and voice acting, though his work in anime is limited. He is far more widely recognized for his live-action roles, such as Milton in the film Office Space and Jimmy James on the sitcom NewsRadio, as well as for voicing iconic characters in Western animated series, most notably Bill Dauterive and Buck Strickland on the long-running show King of the Hill. His voice can also be heard in major animated films like Ice Age and Finding Nemo.

Root's involvement in anime voice work primarily consists of English dubbing for feature films. He voiced the character Bruno in the English-language version of the 2020 anime film Poupelle of Chimney Town. Bruno is the father of the protagonist, Lubicchi, and is considered a heretic in his town for telling stories of a sky with stars. This project was notable as it marked Root's first experience with dubbing for an animated feature, a process where he had to synchronize his performance to the existing Japanese animation and lip flaps, a technical challenge he noted was quite different from his usual voice-over work.

Another credit that falls within the broader realm of anime-influenced animation is his role as Gommu in the Nickelodeon series The Legend of Korra, a sequel to the acclaimed series Avatar: The Last Airbender. While produced in the United States, the series is heavily influenced by Japanese anime. Root voiced the character of Gommu, a homeless man living in Republic City. Beyond these specific credits, his extensive voice work has been concentrated in American animation, including roles in various DC Comics adaptations such as Batman: The Brave and the Bold and Superman: Unbound.