Masaharu Satō is a respected Japanese voice actor born on July 1, 1946, in Tokyo, Japan. He is affiliated with the talent management firm Aoni Production. His career in entertainment began in childhood when he joined a children's theater troupe, working as a child actor. He continued his involvement in performing arts through his school years by joining drama clubs. After a period as a stage actor, he was encouraged by a senior voice actor to enter the voice acting industry, leading to his successful career in anime.

Satō is known for his husky, mature voice, which he has used to portray a wide array of characters. His roles are notably diverse, encompassing stubborn individuals, heroic figures, villains, those in positions of power, and even comedic or detestable characters.

Among his most prominent and long-running roles is that of the Turtle Hermit, Master Roshi, in the long-standing Dragon Ball franchise. He has voiced this iconic character in numerous series and films, including Dragon Ball Z, Dragon Ball Super, and movies like Dragon Ball Z: Resurrection 'F' and Dragon Ball Z: Battle of Gods. His connection to the Dragon Ball universe also includes voicing other characters such as King Vegeta, the father of Prince Vegeta, and Staff Officer Black.

In addition to these major roles, Satō has built an extensive filmography that includes a vast number of other performances. He has voiced characters in a variety of popular series, such as the role of Pagos in the original Dr. Slump, Buffalo Man in the Kinnikuman series, and a recurring role as one of the Seven Dorara Corps members, Doramed III, in the Doraemon films. He has also contributed to the world of One Piece, voicing characters like Keroshot in the film One Piece: Baron Omatsuri and the Secret Island and the elder giant warrior, Jarul, in the anime series. In the video game realm, he is recognized as the voice of the strategist Zuo Ci in the popular Samurai Warriors series.

His more recent work includes the role of Morris in the 2021 anime Tsukimichi -Moonlit Fantasy-. He also voiced the character Kigetsu in Sword Gai: The Animation Part II and Panal in Santa Company: Manatsu no Merry Christmas.

Throughout his decades-long career, Satō has become a familiar presence in anime, frequently appearing in adaptations of Weekly Shōnen Jump magazine series and productions by Toei Animation. His extensive body of work and his ability to bring a wide range of characters to life have solidified his place as a seasoned and enduring figure in the Japanese voice acting industry.