Jérôme Keen is a French actor with a extensive career in theatre, film, television, and voice acting. He pursued classical training in Paris under several coaches, including Cécile Grandin, Jean-Louis Bihoreau, and Jean-Pierre Martino, and later supplemented his studies with Carlo Boso of the Piccolo Teatro di Milano and Jack Waltzer of the Actor's Studio. His stage work is particularly prolific, encompassing leading roles in classic plays by Shakespeare, Molière, Racine, and Beckett, as well as contemporary works.

In the realm of animation and dubbing, Keen is recognized for lending his voice to characters in various anime series. He voiced the protagonist Taichi Hiraga Keaton in the French adaptation of the series Master Keaton. He also took on the role of Don Wei, the ambitious father of the main character, in the Franco-Japanese animated series Oban Star-Racers. His other anime voice work includes the character Andrew Waldfeld in Mobile Suit Gundam Seed and a role in the One Piece film. He also provided voices for the animated films The Summit of the Gods and Calamity, A Childhood of Martha Jane Cannary.

Beyond anime, Keen's voice acting portfolio is substantial. He is the regular French dubbing voice for actors such as Jason Isaacs, Tobias Moretti, John Corbett, and Kevin Sorbo. He is also known for voicing the character Roland in the Borderlands video game series. His on-screen appearances include roles in the films The Killer and Alors on danse, as well as the television series Germinal and La guerre des trônes, la véritable histoire de l'Europe.