Jean-Loup Horwitz is a French actor, author, and director, born on January 30, 1954, who has built an extensive and highly recognizable career in France, particularly through his voice work in animation and film dubbing. While his career began on the stage and in live-action television and film, he has become one of the most familiar voices in French-dubbed animation, lending his talents to a vast array of characters over several decades.

Horwitz's voice is closely associated with numerous iconic characters from major animated productions. Among his most notable roles are Heimlich the clumsy caterpillar in 1001 Pattes (A Bug's Life), Fouine in Monstres et Cie (Monsters, Inc.), and the voice of the Three Little Pigs across the Shrek film series. He is also the definitive French voice of the Looney Tunes character Marvin the Martian, having voiced the role in numerous productions including Space Jam and its sequel, Space Jam: Nouvelle Ère. In 2021, he took on another beloved character, succeeding Gérard Hernandez as the voice of the Grand Schtroumpf (Papa Smurf). His filmography also includes voice roles for Wallace in Wallace et Gromit: Le Mystère du lapin-garou and Joyeux in the third French dubbing of Blanche-Neige et les Sept Nains (Snow White and the Seven Dwarfs).

In the specific realm of anime and Japanese animation, Jean-Loup Horwitz has contributed his voice to several series. As noted, he voiced the character Junior in the magical girl series Emi Magique (Magical Star Magical Emi). His other anime roles include the villain Abis Mal in the first episode of the Aladdin series, a journalist in the Black Jack OAV, and roles in Malicieuse Kiki and the film Les Contes de Terremer (Tales from Earthsea).

Beyond animation, Horwitz is a prolific dubbing artist for live-action film and television. He is a regular French voice for actors such as Oliver Platt, Michael Badalucco, and Mark Hadlow, the latter of whom he dubbed as Dori in The Hobbit film trilogy. He has also dubbed numerous other prominent actors in individual films, including John Lithgow, Paul Giamatti, and Danny McBride. While less active in video games, his voice can be heard in major titles such as The Witcher 3: Wild Hunt and its expansion Hearts of Stone, as well as the game Prey.

In addition to his voice work, Horwitz has maintained a career as a stage actor and author, writing and performing in numerous theatrical productions since the late 1970s. He has also appeared in live-action French television series, including a recurring role as Jean-Noël Latour in the long-running soap opera Plus belle la vie. This multifaceted career underscores his standing as a versatile and enduring figure in French entertainment.