Death metal singer since 1991 (Necrotic Mutation) and throat singer (Tibet, Mongolia, Inuit) since 1996, Sébastien mastered an impressive number of vocal techniques. It is thanks to these techniques that he began to work in the world of video games in 2005. Since then, he has specialized in voice acting for monster and fantastic creatures. He has worked on many video games (Far Cry Instincts, Assassin's Creed 2, Assassin's Creed Brotherhood, Prince of Persia (2008), Prince of Persia - The Forgotten Sands, Tera-Online, Spore Hero, Thief, Blade and Soul, Project TL, Rainbow Six Siege: Outbreak, Far Cry 5, Shadow of the Tomb Raider, Unto the End, Dark Alliance, Dead by Daylight - Resident Evil)) and some movies and TV series (The Colony, Helix Season 1 and Devil's Gate). He is also the casting director and a voice director for Signal Space Lab and he was also a voice director for the creatures in Shadow of the Tomb Raider (Eidos Montreal).