Mako Iwamatsu (born Makoto Iwamatsu; December 10, 1933 – July 21, 2006) was a Japanese actor who became a prominent figure in American film, television and theatre after emigrating to the United States. Often credited simply as Mako, he performed across multiple disciplines—stage acting, feature films, television appearances and voice acting—and gained recognition both for dramatic screen roles and for his distinctive voice.

Mako's career spanned decades and included significant contributions to Asian-American theatre. He was a founding presence in efforts to create more opportunities for Asian and Asian-American performers onstage and onscreen. His work combined classical training with character-driven performances, and it helped raise the profile of non-white actors in mainstream American entertainment.

Notable roles and credits

  • The Sand Pebbles (1966) — an early film role that brought critical attention and an Academy Award nomination for Best Supporting Actor.
  • Samurai Jack — voice of the villain Aku in the first four seasons of Samurai Jack, a role praised for its range and menace.
  • Teenage Mutant Ninja Turtles (1990) — portrayed Master Splinter in the live-action film adaptation.
  • Avatar: The Last Airbender — voiced Uncle Iroh in the first season of Avatar: The Last Airbender; the role was later continued by another actor after Mako's death.
  • Sidekicks and other film/television appearances — he played memorable supporting parts across genres, often bringing warmth or gravitas to mentor figures.

Mako became known for his ability to inhabit culturally specific characters without reducing them to stereotypes. His vocal work, in particular, showcased a capacity to shift from comedy to deep pathos; his voice is frequently cited as one of the defining elements of many animated and genre productions from the 1990s and early 2000s.

Beyond individual performances, Mako's legacy includes mentorship and institution-building for Asian-American artists. By helping to create professional avenues and visibility, he influenced subsequent generations of actors who sought fuller, more varied roles. He remained active in film and television throughout his life and was celebrated for opening doors as well as for his artistry.

Mako died in 2006 after a period of illness. He left behind a diverse body of work that continues to be rediscovered by new audiences, and he is remembered both for iconic characters and for his role in advocating greater diversity in American entertainment. Throughout his career he maintained the professional mononym Mako, which remains the name by which many fans and colleagues recall him.

For further reading on aspects of his life and career, see resources about Japanese and American theatre and voice acting histories, including organizations and retrospectives that document his contributions to Asian-American performance communities (context and archives).