Gerrit Schmidt-Foß is a prominent German voice actor, dialogue director, and dialogue book author, born in Berlin on September 15, 1975. He began his career in the entertainment industry at a young age, starting with radio play productions at the age of seven through his older brother, Dennis Schmidt-Foß, who was also active in the field. This early start led to work with a children's agency, which facilitated his entry into Berlin's synchronization studios as well as film and television roles. As a child actor, he appeared in the 1984 television series Ravioli and had a role in Loriot's 1991 film comedy Pappa ante portas. After completing his Abitur in 1995, he continued to appear on screen, most notably in the ZDF family series Unser Lehrer Doktor Specht.

While Schmidt-Foß is widely recognized as the longstanding German dubbing voice of numerous Hollywood actors, including Leonardo DiCaprio, Jim Parsons, and Jeremy Renner, his voice work also extends significantly into the realm of anime and animation. In this field, he is known for providing the German voices for a variety of characters. Among his notable anime roles is Fuma in the X series, including the movie X and the television series, a role he also voiced in the related OVA Tsubasa Tokyo Revelations. He also voiced the character Seita in the Studio Ghibli film Grave of the Fireflies. Another significant anime role is Seto Kaiba in the German version of the Yu-Gi-Oh! anime series and its associated movie. His repertoire also includes roles in popular franchises such as Digimon, where he voiced characters like Pico Devimon in Digimon Adventure and Mercurymon in Digimon Frontier.

Beyond these specific titles, Schmidt-Foß has contributed to numerous other anime and animated productions. He provided the German voice for Kensuke Aida in Neon Genesis Evangelion and for Broly in the Dragon Ball Z movies. His work also includes the role of Rosiel in Angel Sanctuary and Go Dougan in Saiyuki. In the realm of children's animation, he has voiced characters like Carl Wheezer in Jimmy Neutron and Max Goof in A Goofy Movie and its sequel. He also took on several roles in various Barbie animated films, including Prince Daniel in Barbie of Swan Lake and Dominic in Barbie as the Princess and the Pauper.

In addition to his work in film and television, Schmidt-Foß is an active voice actor in video games and radio plays. His video game credits include the title role in Prince of Persia: The Sands of Time, Cuano in Drakensang: The River of Time, Valerian Mengsk in StarCraft II, and the protagonist in Arcania. He has been a long-standing voice in popular German radio play series such as Bibi Blocksberg, where he plays Bibi's friend Florian, as the narrator in Die Playmos, and as Derek Ashby in Point Whitmark.

Schmidt-Foß also works extensively behind the scenes as a dialogue book author and dialogue director. He has written the German scripts for films such as Iron Man and its sequels, as well as for the Step Up film series. His work in this capacity extends to directing the German dubbing for productions like G.I. Joe: The Rise of Cobra. His contributions to the field have been recognized with awards, including a Goldene Leinwand honour in 1998 for his work on Titanic and the Silhouette audience award in 2011 for his leading role as the voice of Leonardo DiCaprio in Inception.