Mako was born in Kobe, Japan, the son of noted children's book author and illustrator Taro Yashima. His parents moved to the United States when he was a small child. He joined them there after World War II, in 1949, joining the military in the 1950s. He became a naturalized American citizen in 1956. When Mako first joined his parents in the USA, he studied architecture. During his military service, he discovered his theatrical talent, and trained at the Pasadena Community Playhouse. Mako was married to actress Shizuko Hoshi with whom he had two daughters (both are actresses) and three grandchildren.
| Movie | Fear of Missing Out | 2021-07-31 | |
| Series | Star☆Twinkle PreCure | (voice) | 2019-02-03 |
| Series | Onyankopon | ハムスター(チュー丸) | 2017-10-06 |
| Movie | Fairy Tail: Dragon Cry | Young Natsu (voice) | 2017-05-06 |
| Movie | Samurai Jack: The Premiere Movie | Aku (voice) | 2017-10-16 |
| Movie | Arpeggio of Blue Steel -Ars Nova DC- | Maya | 2015-01-31 |
| Movie | Arpeggio of Blue Steel -Ars Nova Cadenza- | Maya | 2015-10-03 |
| Series | Arpeggio of Blue Steel: Ars Nova | Maya (voice) | 2013-10-08 |
| Series | Saki Episode of Side A | Matumi Yuu (voice) | 2012-04-09 |
| Series | The Everyday Tales of a Cat God | Yoshino (voice) | 2011-07-09 |
| Series | C³ - CubexCursedxCurious | Maker Mummy (voice) | 2011-10-01 |
| Series | Working with Voice! | Kanna Aoyagi | 2010-11-17 |
| Series | Hanamaru Kindergarten | Koume | 2010-01-11 |
| Series | The Girl Who Leapt Through Space | Akiha Shishido | 2009-01-05 |
| Movie | TMNT | Splinter (voice) | 2007-03-23 |
| Movie | Rise: Blood Hunter | Poe | 2007-04-28 |
| Movie | The Slanted Screen | Himself | 2006-01-03 |
| Series | Avatar: The Last Airbender | Uncle Iroh | 2005-02-21 |
| Series | Kamichu! | Yurie Hitotsubashi (voice) | 2005-06-29 |
| Movie | Cages | Tan | 2005-10-07 |
| Movie | Memoirs of a Geisha | Sakamoto | 2005-12-06 |
| Series | Maid in Akihabara | 2005-12-01 | |
| Movie | Maid In Akihabara | Shinohara Saki | 2005-12-01 |
| Series | Super Robot Monkey Team Hyperforce Go! | Unknown | 2004-09-18 |
| Movie | Bulletproof Monk | Mr. Kojima | 2003-03-28 |
| Series | Black Sash | Unknown | 2003-03-30 |
| Series | Duck Dodgers | Unknown | 2003-08-23 |
| Series | Lost at Home | Unknown | 2003-04-01 |
| Series | What's New, Scooby-Doo? | Unknown | 2002-09-14 |
| Series | Monk | Unknown | 2002-07-12 |
| Movie | Cruel Game | Straw Hat | 2002-11-27 |
| Movie | Pearl Harbor | Adm. Isoroku Yamamoto | 2001-05-21 |
| Series | Samurai Jack | Aku | 2001-08-10 |
| Series | The Secret Adventures of Jules Verne | Unknown | 2000-06-18 |
| Movie | Conan Unchained: The Making of 'Conan' | The Wizard (archive footage) | 2000-05-30 |
| Movie | Rugrats in Paris: The Movie | Mr. Yamaguchi (voice) | 2000-11-17 |
| Movie | The Accomplice | 1999-04-10 | |
| Movie | Alegría: An Enchanting Fable | Old Momo | 1999-01-10 |
| Series | The West Wing | Unknown | 1999-09-22 |
| Movie | The Bird People in China | Shen | 1998-06-10 |
| Series | Martial Law | Unknown | 1998-09-26 |
| Movie | The Sea Wolf | 1997-01-01 | |
| Movie | Seven Years in Tibet | Kungo Tsarong | 1997-09-12 |
| Movie | Riot | Mr. Lee | 1997-04-27 |
| Series | Dexter's Laboratory | 1996-04-28 | |
| Movie | Balance of Power | Todo Matsumoto | 1996-06-25 |
| Series | 7th Heaven | Unknown | 1996-08-26 |
| Movie | Sworn to Justice | Mr. Young | 1996-10-01 |
| Series | Platypus Man | Unknown | 1995-01-23 |
| Movie | Crying Freeman | Shudo Shimazaki | 1995-04-23 |
| Series | JAG | Unknown | 1995-09-23 |
| Movie | Midnight Man | Buun Som | 1995-05-09 |
| Movie | Red Sun Rising | Buntoro Iga | 1994-09-01 |
| Movie | Nama honban inran kyonyū | 1994-09-23 | |
| Movie | Highlander III: The Sorcerer | Nakano | 1994-11-29 |
| Movie | A Dangerous Place | Sensei | 1994-11-14 |
| Movie | (Nama) Tôchô Ripôto: Chiwa | Inumaru's wife | 1993-03-05 |
| Movie | RoboCop 3 | Kanemitsu | 1993-01-21 |
| Series | Walker, Texas Ranger | Unknown | 1993-04-21 |
| Series | Kung Fu: The Legend Continues | Unknown | 1993-01-27 |
| Movie | Young Wife Reveals Affair | 1993-07-02 | |
| Series | Frasier | Sam Tanaka | 1993-09-16 |
| Series | Diagnosis: Murder | Unknown | 1993-10-29 |
| Movie | Rising Sun | Yoshida-san | 1993-07-30 |
| Movie | Maruhi sennyû: Danshi kinsei gyaku soap | 1992-03-27 | |
| Movie | My Samurai | 1992-01-01 | |
| Movie | Chô waisetsu ikizukai | 1992-05-16 | |
| Movie | Groper Train: Lots of Big Breasts | 1992-11-28 | |
| Movie | Sidekicks | Mr. Lee | 1992-12-17 |
| Movie | Nightingale | Narrator (voice) | 1992-10-04 |
| Movie | Horny Family: The Bride is in Heat | Aiko | 1992-09-12 |
| Movie | The Perfect Weapon | Kim | 1991-03-15 |
| Movie | Strawberry Road | Frank Machida | 1991-04-27 |
| Movie | Pacific Heights | Toshio Watanabe | 1990-09-28 |
| Movie | Fatal Mission | Trang | 1990-07-25 |
| Movie | Murder in Paradise | Capt. Kilalo | 1990-01-19 |
| Movie | Hiroshima: Out of the Ashes | Sgt. Moritaki | 1990-08-06 |
| Movie | Taking Care of Business | Mr. Sakamoto | 1990-08-16 |
| Series | The Paradise Club | Mr. Yamamoto | 1989-09-19 |
| Movie | An Unremarkable Life | Max Chin | 1989-10-12 |
| Series | The Simpsons | Unknown | 1989-12-17 |
| Series | Supercarrier | Unknown | 1988-03-06 |
| Movie | Silent Assassins | Oyama | 1988-05-18 |
| Series | Paradise | Unknown | 1988-10-27 |
| Movie | The Wash | Nobu Matsumoto | 1988-08-17 |
| Movie | Tucker: The Man and His Dream | Jimmy | 1988-08-12 |
| Series | Tour of Duty | Unknown | 1987-09-24 |
| Series | Lovejoy | Unknown | 1986-01-10 |
| Movie | Kung Fu: The Movie | The Manchu | 1986-02-01 |
| Movie | Armed Response | Akira Tanaka | 1986-10-03 |
| Movie | P.O.W. The Escape | Capt. Vinh | 1986-04-01 |
| Series | The Equalizer | Unknown | 1985-09-18 |
| Series | Spenser: For Hire | Unknown | 1985-09-20 |
| Movie | Conan the Destroyer | Akiro 'The Wizard' | 1984-06-29 |
| Movie | Hawaiian Heat | Maj. Taro Oshira | 1984-09-14 |
| Series | Hawaiian Heat | Maj. Taro Oshira | 1984-09-14 |
| Series | The A-Team | Pastry Chef | 1983-01-23 |
| Movie | The Nightingale | Gardener / Minister | 1983-05-10 |
| Movie | Girls of the White Orchid | Mori | 1983-11-28 |
| Movie | The Last Ninja | Aitaro Sakura | 1983-07-07 |
| Movie | Testament | Mike | 1983-11-04 |
| Series | Faerie Tale Theatre | Gardener / Minister | 1982-09-11 |
| Movie | Conan the Barbarian | The Wizard / Narrator | 1982-03-16 |
| Series | Bring 'Em Back Alive | Unknown | 1982-09-24 |
| Series | Voyagers! | Unknown | 1982-10-03 |
| Series | Flamingo Road | Unknown | 1981-01-06 |
| Movie | The Bushido Blade | Enjiro | 1981-06-19 |
| Series | The Greatest American Hero | Unknown | 1981-03-18 |
| Movie | An Eye for an Eye | James Chan | 1981-08-14 |
| Movie | Under the Rainbow | Nakomuri | 1981-07-31 |
| Movie | The Big Brawl | Herbert | 1980-08-18 |
| Movie | Hito Hata: Raise the Banner | Oda | 1980-12-06 |
| Series | Magnum, P.I. | Unknown | 1980-12-11 |
| Series | Supertrain | Unknown | 1979-02-07 |
| Series | The Facts of Life | Unknown | 1979-08-24 |
| Movie | When Hell Was in Session | Maj. Bai | 1979-10-08 |
| Series | A Man Called Sloane | Tanaka | 1979-09-22 |
| Series | The Incredible Hulk | Unknown | 1977-11-04 |
| Movie | Pacific Overtures | Reciter/Shogun/Jonathan Goble | 1976-09-06 |
| Movie | Farewell to Manzanar | Fukimoto | 1976-03-11 |
| Series | Mr. T and Tina | Unknown | 1976-09-25 |
| Series | Quincy, M.E. | Unknown | 1976-10-03 |
| Series | Visions | Unknown | 1976-10-21 |
| Series | Khan! | Unknown | 1975-02-07 |
| Movie | Prisoners | Sgt. Nguyen | 1975-07-01 |
| Movie | The Killer Elite | Yuen Chung | 1975-12-19 |
| Series | Wonder Woman | Unknown | 1975-11-07 |
| Movie | The Green Hornet | Low Sing | 1974-03-21 |
| Movie | The Island at the Top of the World | Oomiak | 1974-12-16 |
| Movie | Judge Dee and the Monastery Murders | Tao Gan | 1974-12-29 |
| Series | Anna and the King | Unknown | 1972-09-11 |
| Series | M*A*S*H | Unknown | 1972-09-17 |
| Movie | Yokahama Mama | Rooster (voice) | 1972-12-24 |
| Series | Kung Fu | Unknown | 1972-10-14 |
| Series | Columbo | Unknown | 1971-09-15 |
| Movie | If Tomorrow Comes | Tadashi | 1971-12-07 |
| Movie | Silence | Kichijiro | 1971-11-13 |
| Movie | The Hawaiians | Mun Ki | 1970-06-17 |
| Movie | The Challenge | Yuro | 1970-02-10 |
| Movie | Fools | Psychiatrist | 1970-12-23 |
| Movie | The Great Bank Robbery | Secret Agent Fong | 1969-06-24 |
| Series | Love, American Style | Unknown | 1969-09-29 |
| Series | Room 222 | Unknown | 1969-09-11 |
| Movie | The Private Navy of Sgt. O'Farrell | Calvin Coolidge Ishimura | 1968-05-08 |
| Series | Hawaii Five-O | Unknown | 1968-09-20 |
| Series | Ironside | Unknown | 1967-03-28 |
| Series | Mannix | Unknown | 1967-09-16 |
| Movie | The Ugly Dachshund | Kenji | 1966-02-16 |
| Series | The Time Tunnel | Unknown | 1966-09-09 |
| Series | The Green Hornet | Unknown | 1966-09-09 |
| Movie | The Sand Pebbles | Po-han | 1966-12-20 |
| Series | F Troop | Unknown | 1965-09-14 |
| Movie | McHale's Navy Joins the Air Force | Japanese Submarine Captain (uncredited) | 1965-07-09 |
| Series | Gidget | Unknown | 1965-09-15 |
| Series | The Big Valley | Unknown | 1965-09-15 |
| Series | I Dream of Jeannie | Unknown | 1965-09-18 |
| Series | The F.B.I. | Unknown | 1965-09-19 |
| Series | Burke's Law | Unknown | 1963-09-20 |
| Series | The Lloyd Bridges Show | Unknown | 1962-09-11 |
| Series | McHale's Navy | Unknown | 1962-10-11 |
| Series | The Gallant Men | Unknown | 1962-10-05 |
| Movie | Never So Few | Soldier in Hospital | 1959-12-07 |
| Series | 77 Sunset Strip | Unknown | 1958-10-10 |