Marc Wilhelm is a French actor primarily known for his extensive work in voice acting, providing the French-language dubbing for numerous characters in anime series and films. Beyond anime, his professional activities encompass live-action acting, voice direction for film dubbing, and voice-over work for commercials, video games, and audiobooks.

His career in anime voice acting is marked by a wide range of leading and supporting roles. He is the regular French voice for several iconic characters. These include Rintaro Okabe in Steins;Gate, Kraft Lawrence in Spice and Wolf, Keima Katsuragi in The World God Only Knows, and Haru Yoshida in My Little Monster. His repertoire also features significant characters such as Shinichi Izumi in Parasyte -the maxim-, Worick Arcangelo in Gangsta., Decim in Death Parade, and Kasper Hekmatyar in Jormungand. In addition to these, he has voiced Takumu Mayusumi in Accel World, Koichi Sakakibara in Another, and Haruhiro in Grimgar, Ashes and Illusions.

Wilhelm's filmography confirms his involvement in the specific roles mentioned. He voices Yuya Kanzaki in A.I.C.O. -Incarnation-, Jirô Tomitake in When They Cry - Rei, and Ozu in the anime adaptation of The Tatami Galaxy. He also plays the role of Lancier in Goblin Slayer, including the film Goblin's Crown. Other notable credits include Casshern in Casshern Sins, Goemon Ishikawa in Lupin III: The Woman Called Fujiko Mine, and Natsume Hyuuga in Gakuen Alice. His work spans a variety of popular franchises, with additional roles in series such as Haikyu!!, Sword Art Online, Blood+, and Initial D.

Beyond performing, Wilhelm also works as a voice director, with credits including the French dubbing for films like Puppy Love and The Idea of You for streaming platforms. His voice is also featured in commercials for brands such as Maped and Lenor, and in video games like F1 Manager 2024. His contributions to the industry are documented through the numerous characters he has brought to life for French audiences.