Dennis Schmidt-Foß is a prominent German voice actor, actor, and dialogue director, born on August 5, 1970, in Aschaffenburg, Germany. He began his career in the entertainment industry at a very young age, appearing in television productions as a child actor starting around 1980 and taking on his first voice-over work as early as age seven. Over a decades-long career, he has become one of the most prolific and sought-after voice actors in Germany, known for providing the German voice for numerous international stars, including Ryan Reynolds, Chris Evans, Freddie Prinze Jr., and Eddie Murphy.

Within the realm of anime and animation, Schmidt-Foß has lent his voice to a wide array of characters in German dubs. He is the German voice of Kazuki Fuse, the protagonist of the mature political thriller Jin-Roh: The Wolf Brigade. He also voiced the character Mags in the Appleseed XIII series and Mech in the CGI film Starship Troopers: Invasion. In the science fiction OVA series Spirit of Wonder and its iteration Spirit of Wonder Scientific Boys Club, he provided the voice for the character Jack. His work also includes the role of Vincent Mancini in Sin: The Movie.

Beyond the specific titles mentioned, Schmidt-Foß's extensive anime filmography includes many other notable roles. He is the German voice of Inosuke Hashibira in the globally successful Demon Slayer: Kimetsu no Yaiba series and its films. He has voiced Tullece in Dragon Ball Z: The Tree of Might, Gino Weinberg in Code Geass: Lelouch of the Rebellion R2, and Shizuku Dômeki in xxxHOLiC. He also provided the German voice for Detective Pikachu in the live-action film of the same name, Jet Black in the live-action Cowboy Bebop series, and Walter von Schönkopf in The Legend of the Galactic Heroes: Die Neue These. In the Yu-Gi-Oh! franchise, he is known as the voice of Zane Truesdale and Duke Devlin.

Schmidt-Foß's work is characterized by recurring collaborations, both with other voice actors and within long-running series. He frequently works alongside his half-brother, fellow prominent voice actor Gerrit Schmidt-Foß. He is also married to voice actress Dascha Lehmann, daughter of the renowned voice actor Manfred Lehmann. This family connection represents a significant voice-acting dynasty in Germany. In his anime career, he has taken on recurring roles in long-running franchises, voicing characters across multiple installments, such as Zane Truesdale in Yu-Gi-Oh! GX and its sequels, and Inosuke Hashibira across the various arcs of Demon Slayer.

His notable achievements include his status as the official German voice for several major Hollywood actors, a testament to his vocal range and consistent casting. He is also a prolific dialogue writer and director for German dubs, contributing to the scripts and direction of numerous films and series. With a career spanning over four decades and encompassing thousands of roles in film, television, and animation, Dennis Schmidt-Foß stands as a central and highly respected figure in the German voice-acting industry.