Oliviero Dinelli is an Italian actor and voice actor renowned for his extensive work in dubbing, particularly in animation. Born in Rome, he pursued a comprehensive performing arts education, graduating from the National Academy of Dramatic Arts Silvio d'Amico. He also holds a degree in Political Science from Sapienza University of Rome. Before focusing on voice acting, Dinelli built a foundation in live performance, working in theatre, television, and radio.

In the realm of anime and animated series, Dinelli has lent his voice to a wide array of characters, becoming a familiar presence to Italian audiences. He is notably the Italian voice of Kozo Fuyutsuki, the Vice Commander of NERV, across the entire Evangelion franchise. This includes the original Neon Genesis Evangelion series, the films Death & Rebirth and The End of Evangelion, and the entire Rebuild of Evangelion film tetralogy, concluding with Evangelion: 3.0+1.0 Thrice Upon a Time. Another significant role is Rigel, the loyal second-in-command to the protagonist Duke Fleed in the classic robot anime UFO Robo Grendizer.

His portfolio also includes characters from globally recognized series. He voiced Don Wei, the ambitious and stern father of the protagonist, in the 2006 Franco-Japanese production Oban Star-Racers. In the world of Lupin III, Dinelli provided the voice for Brian Murphy, the developer of a virtual reality system, in the 2004 television special Stolen Lupin, known in Italian as Lupin III - Tutti i tesori del mondo. While the examples of Professor Mauser from the Spriggan anime and Bruno J. Gloval from The Super Dimension Fortress Macross are not detailed in the available search results, they would align with his extensive work in the genre.

Beyond these specific roles, Dinelli's career is marked by a remarkable breadth across both Western and Japanese animation. He is the primary Italian voice of British comedian Rowan Atkinson, dubbing him in numerous films including the Mr. Bean series and Johnny English. For Disney, he has voiced characters such as Master Muten in various Dragon Ball films, Wilbur in The Rescuers Down Under, and Principal Mazur in An Extremely Goofy Movie. His voice is also known to modern audiences as Death in the animated series Family Guy from the ninth season onward. Dinelli's enduring presence in the industry is characterized by his versatility and his ability to provide the Italian voice for a wide spectrum of characters, from authoritative commanders to comedic figures. He often takes over roles from departed colleagues, ensuring continuity for beloved characters like Tappo (Eeyore) in the Winnie the Pooh films.