Xavier Fagnon is a French actor, born on November 22, 1972, who has built a prolific career primarily focused on dubbing for film, television, animation, and video games. His interest in acting began at the age of twelve under the tutelage of his professor, Jacques Herbert. Early in his career, he performed with the avant-garde theatre troupe Théâtre National Terroriste and has also worked as a circus ringmaster for the Bouglione circus.

In the realm of anime and animated film, Fagnon has lent his voice to a wide array of characters. Among his noted roles are Morisuke in the Netflix anime series Yasuke, Bruno in the animated film Poupelle of Chimney Town, and Dr. Kosaku Tokita in the acclaimed film Paprika. His work also includes providing the French voice for the iconic character Black Jack in the anime series of the same name.

Fagnon is recognized for his recurring collaborations with major film studios, providing the French voice for numerous characters across various franchises. He is the regular French voice for actors such as Seth Rogen, Jason Momoa, Hugh Jackman, and Jude Law. In animation, he is known for being the voice of Master Mantis in the Kung Fu Panda franchise, Skipper in the Madagascar films, and Frank in the Hotel Transylvania series. He also voices characters in the DC Comics animated universe, most notably the Joker in several productions since 2008, including Batman: Under the Red Hood and the video game Batman: Arkham Knight.

Among his notable achievements, Fagnon has been the voice of Sulley in Monsters University, Mayor Lionheart in Zootopia, and Donkey Kong in The Super Mario Bros. Movie. He has also been the voice of several characters in the long-running series The Simpsons since 2012, taking over from the late Gérard Rinaldi for roles such as Mr. Burns, Krusty the Clown, and Dr. Hibbert. In addition to his voice work, Fagnon has appeared on screen in the film Le Village des ombres and the television series 3615 Monique.