José Manuel Oliva is a Spanish voice actor known for his extensive work in the dubbing of anime series and films for the Spanish market. His career encompasses a wide range of prominent characters in some of the most popular and critically acclaimed animated productions of recent years.

Oliva has built a reputation for voicing characters with significant presence, often in roles that require authority, depth, or villainy. He is the Spanish voice of Muzan Kibutsuji, the primary antagonist of the massive hit series Demon Slayer: Kimetsu no Yaiba. His association with this franchise also includes voicing Tanjuro Kamado, the protagonist's father, and the flamboyant Sound Hashira, Tengen Uzui. In the world of sports anime, he voices the seasoned coach Keishin Ukai in the later seasons of the volleyball series Haikyu!!, specifically Haikyu!! To The Top.

His versatility is further demonstrated in his roles within other major franchises. He voices Willy Tybur, a key figure from a powerful family, in the climactic final season of Attack on Titan. He also lends his voice to the sharpshooter Keith Kazama Flick in the Netflix original series B: The Beginning and its sequel, B: The Beginning Succession. Oliva has taken on the iconic role of the marksman Daisuke Jigen in the film Lupin III THE FIRST and voiced the protagonist Van in the fantasy film The Deer King.

His film work is extensive and includes roles such as Hippocrates in the animated feature The Wonderland, the villainous Wolfram in My Hero Academia: Two Heroes, Tomizawa in Makoto Shinkai's early film The Place Promised in Our Early Days, and Todo in the surreal comedy Night is Short, Walk On Girl.

Oliva's career shows a pattern of consistent work across multiple high-profile projects. He has voiced characters in long-running and globally popular series like One Piece, where his roles include Shanks, Rob Lucci, and Charlotte Katakuri in various films. He has also contributed to the Fairy Tail franchise, the Naruto Shippūden series as Kakuzu, and films from the Case Closed and Psycho-Pass series. His frequent presence in the Spanish dubs of major anime productions makes him a recognizable and significant figure in the industry.