Arnaud Léonard is a Belgian voice actor and comedian, born on December 26, 1975. He was active in theater and musical comedy in the early part of his career before becoming more prominently involved in voice acting from the 2000s onwards. He is a graduate of the Conservatoire Royal de Bruxelles, where he received several prestigious awards, including the First Prize for dramatic art.

Léonard is particularly well-known in the world of French-dubbed anime for his long-standing role as the skeleton musician Brook in the long-running series One Piece, a character he voiced from episodes 337 to 739. His work on the series extends to several One Piece specials and films, where he has voiced not only Brook in films like One Piece Film: Strong World and One Piece Film: Z, but also other characters such as Jabura, Chaka, and Haguar D. Sauro. Beyond One Piece, his notable anime roles include Kenshiro in the OVA series New Fist of the North Star (Shin Hokuto no Ken) and Shion, the former Pope, in Saint Seiya: The Hades Chapter - Sanctuary. He also provided the voice for several characters in the Yu-Gi-Oh! Duel Monsters anime, including Maximillion Pegasus and Salomon Muto.

His voice acting portfolio is not limited to Japanese animation. He has voiced characters in a wide range of animated productions, such as Rick in Kirby: Right Back at Ya!, Giroro in Keroro, and Franz Hopper in Code Lyoko. In film, he has lent his voice to the character Assurancetourix in the recent Asterix animated films, including Asterix: The Mansions of the Gods and Asterix: The Secret of the Magic Potion, and voiced General Krypton in Drôles de petites bêtes. He also performed additional voices for the French dubs of major animated features like Frozen II.

Léonard's work also extends to live-action dubbing and video games. A notable early role was dubbing actor Yu Ji-tae in the French version of the film Oldboy. He is also recognized for his performance as Chancellor Ardyn Izunia, the primary antagonist, in the CGI film Kingsglaive: Final Fantasy XV and the associated video game Final Fantasy XV. In addition to his voice work, he has appeared on screen as an actor, playing Yvan Bilquis in the long-running French television series Plus belle la vie.

A versatile performer, Léonard is also a trained singer proficient in jazz, lyrical, and variety styles, and he plays multiple instruments, including guitar and piano professionally. His musical talents have been showcased on stage in numerous theater productions and musicals, most notably as the voice of Pumbaa and understudy for Scar in the French production of The Lion King at the Théâtre Mogador in Paris from 2007 to 2010. He also worked as a teacher of oral expression at the Institut des Hautes Études des Communications Sociales (IHECS) in Brussels from 2000 to 2007.