Shūichirō Moriyama was the stage name of Hiroo Ōtsuka, a Japanese actor and voice actor born on July 26, 1934. He was known for his deep, commanding voice and had a prolific career spanning several decades until his death on February 8, 2021, at the age of 86 from pneumonia. Beyond his anime work, Moriyama was highly respected as a dubbing artist, serving as the official Japanese voice-over actor for several major Hollywood stars. He was the regular dub-over artist for Telly Savalas, Jean Gabin, Spencer Tracy, and Lino Ventura, a role that saw him meet Savalas in person on multiple occasions.

In the world of animation, Moriyama is perhaps most famous for providing the voice of the title character in Hayao Miyazaki's 1992 Studio Ghibli film Porco Rosso. He voiced Marco Pagot, the disillusioned World War I fighter ace cursed with the face of a pig, delivering a performance that defined the character's weary yet noble spirit. His other notable theatrical anime roles include King Gourmeth in the first Dragon Ball film, Dragon Ball: Curse of the Blood Rubies, and the villainous Sakaki Hyōbu in the adult-oriented historical fantasy film Ninja Scroll. He also voiced Volcan in the 1980 film Phoenix 2772 and appeared in other animated features such as Arcadia of My Youth and various Doraemon films.

Moriyama's career also extended to video games, where he voiced characters including Wagram in The Last Remnant and Cid Aulstyne in Final Fantasy Type-0. In the live-action realm, he appeared in films such as the 1996 hit Shall We Dance? and Salaryman Kintaro. His live-action voice acting credits include the English-language films The Rescuers Down Under, in which he voiced the villain Percival C. McLeach for the Japanese dub, and Rango. Shūichirō Moriyama left behind a substantial legacy as a versatile performer equally at home in both live-action and voice roles, and he remains a cherished figure in Japanese animation history for his iconic portrayal of Porco Rosso.