Renaud Marx is a French actor primarily known for his extensive work in dubbing, lending his voice to numerous Hollywood stars and animated characters for the French-language versions of films and television series. He was born on August 20, 1959. Coming from a family of performers, he is the son of actress Denise Bosc and comedian and composer Robert Marcy. Before focusing on dubbing, Marx built a career in French television, most notably for his long-running role as Inspector then Lieutenant David Kaplan in the popular TF1 series Julie Lescaut, a part he played from 1995 to 2005. He also appeared in other series such as Brigade Navarro and Joséphine, ange gardien. In addition to his screen and voice work, Marx is a singer and has performed in stage productions, including the musical Les Misérables.

In the realm of animation and voice acting, Renaud Marx is a highly regarded figure, recognized for providing the French voices for a wide array of characters in both animated features and live-action dubbing. He is notably the regular French voice actor for several prominent American actors, establishing long-standing associations that define their French-screen personas. He has dubbed Bill Pullman in numerous films, including Casper, Lost Highway, and The Equalizer. He is also one of the primary French voices for John Travolta, Tom Sizemore, John Cusack, and Kenneth Branagh, whose roles as Gilderoy Lockhart in the Harry Potter series and Hercule Poirot in Murder on the Orient Express he voiced. His work extends to dubbing actors like Dermot Mulroney and Eric Dane.

Regarding anime and animated feature films specifically, Renaud Marx has delivered several iconic performances. He voiced the character of Captain Li Shang in the French versions of Disney's Mulan and its sequel Mulan 2. Another significant role is that of the protagonist, Kazuki Fuse, in the mature and atmospheric anime film Jin-Roh: The Wolf Brigade. His other animation credits include the role of the ramoneur in a version of Le Roi et l'oiseau, Truffe in Lady and the Tramp II: Scamp's Adventure, and the title character, Tibère the bear, in the children's series Tibère et la maison bleue. He has also provided voices for various characters in animated series such as Batman and Les Tiny Toons.

A notable achievement in his career was his decision in February 2022 to retire from dubbing, bringing an end to a prolific chapter in French voice acting. His legacy is marked by the familiarity of his voice to French audiences, whether through his regular association with major international film stars or his beloved characters in animated classics like Mulan and Jin-Roh.