Akio Ohtsuka is a highly esteemed Japanese voice actor and narrator, renowned for his deep, resonant voice and his ability to portray a vast spectrum of characters, from stoic heroes and powerful villains to comedic relief. Born on November 24, 1959, in Tokyo, he is the son of the legendary voice actor Chikao Ohtsuka, which placed him in proximity to the industry from a young age. However, his path to voice acting was not a direct one; he worked as a truck driver until the age of 23 before deciding to pursue a career in acting, initially on stage before transitioning to voice work. He is currently affiliated with the talent agency Mausu Promotion.

Ohtsuka's career, which began in earnest in 1988, is distinguished by a prolific number of roles across anime, video games, and film dubbing. His voice, often described as astringent and calm, carries a powerful and authoritative weight that has made him the definitive voice for numerous iconic characters. Among his most celebrated roles are the stoic cyborg Batou in the Ghost in the Shell franchise, the medical genius Black Jack in the long-running Black Jack series, and the flamboyant and powerful Rider (Iskandar) in Fate/Zero. He also voices the legendary warrior Thorkell in Vinland Saga, the charismatic yet dangerous Yujiro Hanma in Baki, the villainous All For One in My Hero Academia, and the easygoing but perceptive Ekubo in Mob Psycho 100 II. His repertoire also includes memorable performances as the sly Blackbeard in One Piece and the dual roles of the Yokomizo twin detectives in Detective Conan.

Beyond anime, Ohtsuka is exceptionally well-known in the video game world, most notably as the definitive voice of Solid Snake, Naked Snake, and other related characters in Hideo Kojima's acclaimed Metal Gear Solid series. The game's director was so impressed by his performance in Mobile Suit Gundam 0083 that he specifically chose Ohtsuka for the role, and even modeled some of Snake's mannerisms on the actor. His other significant game roles include the various incarnations of Master Xehanort in the Kingdom Hearts series and Judge Gabranth in Final Fantasy XII.

Ohtsuka is also the official Japanese dubbing voice for numerous high-profile Western actors, including Mel Gibson, Steven Seagal, Nicolas Cage, Samuel L. Jackson, and Antonio Banderas, bringing their performances to Japanese audiences. His influence and skill have been recognized with prestigious awards. He won the Voice Actor Award at the Tokyo International Anime Fair in 2006 for his work as Black Jack. In 2015, he received the Kei Tomiyama Award at the 9th Seiyu Awards, an honor given to a voice actor who has promoted the profession. In 2021, he took on the legendary role of Daisuke Jigen in the Lupin III franchise, succeeding the character's original voice actor after 52 years. With a career spanning over three decades, Akio Ohtsuka continues to be a dominant and respected presence in the Japanese voice acting industry.