Mathias Casartelli is a French actor primarily known for his extensive work in dubbing, lending his voice to numerous characters in foreign television series and films for the French-speaking market.

His voice acting career is extensive and spans several decades, with documented dubbing credits beginning as early as 2003. He has provided the French voice for a wide array of characters in popular live-action series, including roles in CSI: Las Vegas, Bones, Dexter, Mad Men, and Leverage. This long-standing career in a dubbing studio forms the core of his professional profile.

In the realm of anime and animation, Casartelli is indeed recognized for his role as Kudo in the 2022 series The Dawn of the Witch, as credited in the show's French dubbing cast. He is also known for voicing the character Senta in the French adaptation of the anime Hell's Paradise. His work in animation also extends to feature films, such as his participation in the 2021 animated film The Summit of the Gods.

His dubbing filmography reveals recurring collaborations with several French voice directors, including Virginie Ludwig, Marie-Christine Chevalier, and Erik Colin, among others. This body of work demonstrates a consistent and active presence in the French dubbing industry, contributing to the localization of international content for French audiences. In addition to his voice acting, Casartelli has also appeared in live-action roles in French television series and films, such as Les Tuches 3 and Petits secrets en famille.