Akio Ōtsuka is a highly esteemed Japanese voice actor and narrator, renowned for his deep, commanding, and richly textured voice. Born on November 24, 1959, in Tokyo, he is the son of the legendary voice actor Chikao Ōtsuka and has been active in the industry since 1988. He is affiliated with the talent management firm Mausu Promotion.

Ōtsuka's career is distinguished by an extensive and varied portfolio of roles in anime, video games, and dubbing. He is particularly celebrated for his portrayal of iconic characters that leverage his powerful vocal presence. Among his most famous roles are the stoic cyborg Batou in the Ghost in the Shell franchise, the titular character in Black Jack, and the various incarnations of Snake in the Metal Gear Solid video game series, including Solid Snake and Naked Snake. In the long-running series One Piece, he voices the formidable Emperor Marshall D. Teach, better known as Blackbeard. He also brings to life the charismatic villain All For One in My Hero Academia and the easygoing yet powerful Shunsui Kyōraku in Bleach.

His recent work showcases his continued prominence and versatility. In the 2024 original anime Pon no Michi, he voices Chonbo, a unique mahjong spirit that takes the form of a sparrow and is only audible to the main character. He also plays the role of the Demon King in the 2025 anime series Headhunted to Another World: From Salaryman to Big Four!, serving as the powerful employer who summons a salaryman to become one of his elite generals. Additional roles expansive filmography include Ōchi Fukuchi in Bungo Stray Dogs and Sōun Tendō in the classic series Ranma ½.

Beyond these, Ōtsuka has lent his voice to a multitude of other characters across different media. In the Confucius series, he voices the role of Zhong You. He is also known for roles such as Kushige in Malevolent Spirits: Mononogatari, Shirō Akabane/Kojirō Arima in Good Night World, and Ahriman in The Demon King's Daughter Is Too Kind!!. He has famously taken on the mantle of Daisuke Jigen in several Lupin the IIIrd films, continuing a legacy role.

In addition to his anime work, Ōtsuka is the official Japanese dubbing voice for numerous high-profile Hollywood actors, including Steven Seagal, Nicolas Cage, Antonio Banderas, and Samuel L. Jackson. His deep, resonant tone has made him a sought-after narrator for documentaries and programs as well. With a career spanning over three decades and hundreds of roles, Akio Ōtsuka remains one of the most respected and recognizable voices in the Japanese entertainment industry.