Masane Tsukayama is a Japanese actor, voice actor, and narrator born on February 6, 1944, in Naha, Okinawa, Japan. He is affiliated with the theatre company Gekidan Seinenza. Tsukayama began his career in the mid-1960s, joining the theatre company in 1964 and starting his voice acting work in the early 1970s. He is known for his distinctive,沉稳柔和的低音, which has been described as both sweet and noble, allowing him to portray a wide range of characters from righteous heroes to powerful villains.

In anime, Tsukayama has lent his voice to numerous significant roles. He is well known for his portrayal of the sinister Zōken Matō in the Fate series, including the anime Fate/Zero and the film trilogy Fate/stay night: Heaven's Feel. He also voiced the enigmatic Igor and the entity Yaldabaoth in the Persona 5 anime adaptations, having originated the roles in the Persona 5 video game. His other prominent anime roles include the intimidating Hyōdō in Kaiji, the cunning Morgana in Lupin III: The Last Job, and Guile in the classic Street Fighter II: The Animated Movie. In 2018, he took over the iconic role of Gol D. Roger in One Piece following the passing of Chikao Ōtsuka.

Beyond the roles listed in the query, Tsukayama's extensive anime filmography includes General Ozmel in Gasshin Sentai Mechander Robo, Ash in the short film A Detective Story from The Animatrix, narration for Shin Kyūseishu Densetsu Hokuto no Ken: Yuria-den, Shiro Kaieda in The Silent Service, Koichiro Kamishiro in Crystal Triangle, Bob Stone in the Running Man segment of the anthology film Neo Tokyo, and Lü Bu in the animated film Sangokushi [1]: Eiyū-tachi no Yoake. He has also appeared in a wide array of other works, such as Fullmetal Alchemist, Witch Hunter Robin, and the live-action television drama series Bayside Shakedown.

In addition to his anime work, Tsukayama is highly acclaimed for his career in dubbing foreign films and series, where he is the regular Japanese voice for actors Kevin Costner, Liam Neeson, Robert De Niro, and Richard Gere. In video games, he is noted for his role as Saburo Arasaka in Cyberpunk 2077, for which he provided the voice in all language localizations of the game.

In recognition of his long-standing and distinguished career, Masane Tsukayama was awarded the Merit Award at the 15th Seiyu Awards in 2021.