| Title | Year | Status | Character |
|---|
| The Commish | 1993 | TV Series | Tashima |
| Animaniacs | 1993 | TV Series | Mr. Kato |
| The Magic Paintbrush | 1993 | TV Movie | The Old Man (voice) |
| Bonkers | 1993 | TV Series | Sgt. Tetsuo |
| Batman: The Animated Series | 1992-1993 | TV Series | The Ninja / Kyodai Ken |
| Renegade | 1993 | TV Series | Mishima |
| Darkwing Duck | 1992 | TV Series | Goose Lee |
| Capitol Critters | 1992 | TV Series | |
| Counterstrike | 1991 | TV Series | Charles Hope |
| The Real Ghostbusters | 1991 | TV Series | Ogata |
| ProStars | 1991 | TV Series | Additional Characters (1991) (voice) |
| The Great Pretender | 1991 | TV Movie | Hasamu Mochadomi |
| TaleSpin | 1990 | TV Series | Wan-Lo |
| Chip 'n' Dale Rescue Rangers | 1990 | TV Series | Chow Ming |
| Crazy People | 1990 | | Yamashita's Aide |
| Grand | 1990 | TV Series | |
| Friday's Curse | 1990 | TV Series | Tanaka |
| Joseph and His Brothers | 1990 | Video short voice | |
| Mom P.I. | 1990 | TV Series | Books |
| The Karate Kid | 1989 | TV Series | Miyagi Yakuga |
| MacGyver | 1989 | TV Series | Peng Chow |
| The Vineyard | 1989 | | Auctioneer |
| Falcon Crest | 1988-1989 | TV Series | Lawrence 'Larry' Mishima |
| Tour of Duty | 1988-1989 | TV Series | Sgt. Vinh / Joe |
| Star Trek: The Next Generation | 1988 | TV Series | Lt. Chang |
| Aloha Summer | 1988 | | Ted Tanaka |
| Ohara | 1988 | TV Series | Kazu |
| P.I. Private Investigations | 1987 | | Kim |
| Rambo | 1986 | TV Series | Black Dragon / White Dragon |
| Knots Landing | 1986 | TV Series | Yoshio Shinno |
| American Geisha | 1986 | TV Movie | Mr. Hashimoto |
| Chuck Norris: Karate Kommandos | 1986 | TV Series | Tabe |
| Airwolf | 1985 | TV Series | Tran Van Hieu |
| Deadly Nightmares | 1985 | TV Series | Eric Sato |
| CBS Schoolbreak Special | 1985 | TV Series | Mr. Sumida |
| Pray for Death | 1985 | | Kaga |
| The Adventures of Buckaroo Banzai Across the 8th Dimension | 1984 | | Professor Hikita |
| Magnum, P.I. | 1984 | TV Series | Ray Lum |
| Quincy M.E. | 1976-1983 | TV Series | Sam Fujiyama |
| B.J. and the Bear | 1980 | TV Series | Sam Fujiyama |
| How the West Was Won | 1979 | TV Mini-Series | Chuk |
| Gray Lady Down | 1978 | | Seaman at base (uncredited) |
| Black Sunday | 1977 | | Japanese Man (uncredited) |
| SST: Death Flight | 1977 | TV Movie | Flight Engineer Roy Nakamura |
| M*A*S*H | 1972-1976 | TV Series | North Korean / Lin |
| Visions | 1976 | TV Series | Rev. Sugano |
| Barnaby Jones | 1976 | TV Series | Nin Tsu / Mr. Nin |
| Special Delivery | 1976 | | Mr. Chu |
| Midway | 1976 | | Cmdr. Minoru Genda |
| Helter Skelter | 1976 | TV Movie | Drees Darrin |
| Peeper | 1976 | | Butler |
| Harry O | 1975 | TV Series | Chang Lee |
| Death Scream | 1975 | TV Movie | Hospital Intern |
| Rollerball | 1975 | | Strategy Coach for Houston Team |
| The Six Million Dollar Man | 1975 | TV Series | Tomas Gabella |
| Airport 1975 | 1974 | | Passenger (uncredited) |
| Fer-de-Lance | 1974 | TV Movie | Masai Ikeda |
| Aloha Means Goodbye | 1974 | TV Movie | Arnold |
| Kojak | 1974 | TV Series | Sammy Loo |
| The Terminal Man | 1974 | | Anesthetist |
| Men of the Dragon | 1974 | TV Movie | Li-Teh |
| Kung Fu | 1972-1974 | TV Series | Captain Tim Lee / Smith / Fong |
| Marcus Welby, M.D. | 1973 | TV Series | Dr. Arnold |
| Love, American Style | 1973 | TV Series | Milton (segment "Love and the Fortunate Cookie") |
| Police Story | 1973 | TV Series | Dr. Decano |
| The Naked Ape | 1973 | | Samurai Warrior |
| The Burns and Schreiber Comedy Hour | 1973 | TV Series | Regular |
| Soylent Green | 1973 | | Shoe Seller (uncredited) |
| Pueblo | 1973 | TV Movie | North Korean Negotiator |
| Mannix | 1970-1973 | TV Series | Dr. Sato / Dr. Yoshiro |
| The Amazing Chan and the Chan Clan | 1972 | TV Series | Henry Chan |
| Ironside | 1970-1972 | TV Series | Harry / Sgt. Ikiski / Officer / ... |
| What's a Nice Girl Like You...? | 1971 | TV Movie | Police Pathologist (uncredited) |
| Nanny and the Professor | 1970 | TV Series | |
| Some Kind of a Nut | 1969 | | George Toyota |
| It Takes a Thief | 1968 | TV Series | Chief Aide |
| Run for Your Life | 1967 | TV Series | Bartender |
| Dimension 5 | 1966 | | Sato |
| Women of the Prehistoric Planet | 1966 | | Tang (as Roberto Ito) |
| Mister Roberts | 1966 | TV Series | |
| Get Smart | 1966 | TV Series | KAOS Agent Number 3 |
| I Spy | 1965 | TV Series | Driver |
| Mater's Tall Tales | 2010 | TV Mini-Series | Ito San |
| Tokyo Mater | 2008 | Short | Ito-San (voice) |
| Avatar: The Last Airbender | 2008 | TV Series | Sun Warrior Chief |
| Teen Titans: Trouble in Tokyo | 2006 | Video | Mayor / Bookseller (voice) |
| Justice League | 2003 | TV Series | Mr. Hama / Shopper |
| What's New, Scooby-Doo? | 2003 | TV Series | Additional Voices |
| The Proud Family | 2003 | TV Series | Khan |
| Jackie Chan Adventures | 2002 | TV Series | Kai Ching |
| The Theater of Martin Lim | 2002 | Short | Martin Lim |
| The Mummy: Secrets of the Medjai | 2001 | TV Series | Lin Chou |
| MythQuest | 2001 | TV Series | Mosaku |
| Star Trek: Voyager | 2001 | TV Series | John Kim |
| The Wild Thornberrys | 2000 | TV Series | Asian Black Bear |
| The Immortal | 2000 | TV Series | Yashiro |
| Samurai Swing | 1999 | Short | Bill |
| Lima: Breaking the Silence | 1999 | | President Fujimoro |
| The Omega Code | 1999 | | Shimoro Lin Che |
| The King of Queens | 1999 | TV Series | Mr. Fugita |
| Once a Thief | 1996-1998 | TV Series | Tang Godfather |
| Dr. Quinn, Medicine Woman | 1998 | TV Series | Mr. Wu |
| Adventures from the Book of Virtues | 1998 | TV Series | Hofus |
| Once a Thief: Family Business | 1998 | TV Movie | Tang Godfather |
| PSI Factor: Chronicles of the Paranormal | 1997 | TV Series | Victor Sang |
| Superman | 1997 | TV Series | Awards Presenter / Dr. Teng |
| The Hunger | 1997 | TV Series | Uncle Lee |
| The Best Bad Thing | 1997 | TV Movie | Mr. Tsujimura |
| Once a Thief: Brother Against Brother | 1997 | TV Movie | Tang Godfather |
| The Real Adventures of Jonny Quest | 1996 | TV Series | President Horkarno / Controller / Pradad |
| Quack Pack | 1996 | TV Series | Dr. William Wu |
| Chicago Hope | 1996 | TV Series | Hiro Miyamoto |
| Once a Thief | 1996 | TV Movie | The Godfather |
| The Outer Limits | 1996 | TV Series | Colonel Raymond |
| Hollow Point | 1996 | | Shin Chan |
| Iron Man | 1995-1996 | TV Series | The Mandarin / Mandarin |
| One West Waikiki | 1996 | TV Series | Dr. Ronald Shigeta |
| Side Effects | 1996 | TV Series | Mr. Kogawa |
| The War Between Us | 1995 | | Mr. Kawashima |
| The X-Files | 1995 | TV Series | Dr. Shiro Zama |
| Kung Fu: The Legend Continues | 1995 | TV Series | Kwan |
| Jonny Quest Versus the Cyber Insects | 1995 | TV Movie | 427 (voice) |
| Captain Planet and the Planeteers | 1995 | TV Series | Dr. Chen |
| Vanishing Son | 1995 | TV Series | |
| Trial at Fortitude Bay | 1994 | TV Movie | Methusala |
| Swat Kats: The Radical Squadron | 1993-1994 | TV Series | Mr. Young |
| Gargoyles | 1994 | TV Series | Dr. Sato |
| Biker Mice from Mars | 1994 | TV Series | Stalker |
| Highlander | 1993-1994 | TV Series | Hideo Koto / Johnny Leong |
| E.N.G. | 1994 | TV Series | Kenji Yoshomida |
| Where on Earth Is Carmen Sandiego? | 1994 | TV Series | Additional Voices (voice) |
$1 Million