Akio Otsuka is a Japanese voice actor affiliated with Mausu Promotion. He is the son of fellow voice actor Chikao Otsuka. In February 2005, he married voice actress Yoko Soumi, but later divorced her in 2009.
| Movie | The Rose of Versailles | General Bouille (voice) | 2025-01-31 |
| Movie | Batman Ninja vs. Yakuza League | Aquaman (voice) | 2025-03-17 |
| Movie | Nintama Rantarō: Invincible Master of the Dokutake Ninja | (voice) | 2024-12-20 |
| Movie | Ghost in the Shell: SAC_2045 The Last Human | (voice) | 2023-11-23 |
| Movie | Sand Land | Satan (voice) | 2023-07-22 |
| Movie | Eternal 831 | Muroto (voice) | 2022-03-18 |
| Movie | Laid-Back Camp the Movie | Shinshiro Hajime / Narration (voice) | 2022-07-01 |
| Movie | Ghost Book | 2022-07-22 | |
| Movie | Pompo the Cinephile | Martin Braddock (voice) | 2021-06-04 |
| Movie | Sing 2 | ジミー・クリスタル | 2021-12-01 |
| Movie | Psycho-Pass 3: First Inspector | Todoroki Tenma (voice) | 2020-03-27 |
| Movie | One Piece: Stampede | Marshall D. Teach (voice) | 2019-01-03 |
| Movie | Crayon Shin-chan: Honeymoon Hurricane ~The Lost Hiroshi~ | Bulldozer Johnny (voice) | 2019-04-19 |
| Movie | Code Geass: Lelouch of the Re;surrection | Volvona Forgner (voice) | 2019-02-09 |
| Movie | Patalliro! The Movie | (voice) | 2019-06-28 |
| Movie | Lupinranger vs Patranger vs Kyuranger | Champ / Oushi Black (Voice) | 2019-05-03 |
| Movie | My Hero Academia: Two Heroes | All For One (voice) | 2018-08-03 |
| Movie | Uchu Sentai Kyuranger vs. Space Squad | Champ / Oushi Black (voice) | 2018-08-08 |
| Movie | The Seven Deadly Sins: Prisoners of the Sky | Zoria (voice) | 2018-08-18 |
| Movie | Genocidal Organ | Rockwell (voice) | 2017-02-03 |
| Movie | Doubutsu Sentai Zyuohger vs. Ninninger the Movie: Super Sentai's Message from the Future | Oushi Black (voice) | 2017-01-14 |
| Series | Uchuu Sentai KyuuRanger | Champ/Oushi Black | 2017-02-12 |
| Series | Konohana Kitan | God of War (voice) | 2017-10-04 |
| Movie | Yo-kai Watch Shadowside: The Return of the Oni King | 2017-12-17 | |
| Movie | Uchu Sentai Kyuranger The Movie: The Geth Indaver Strikes Back! | Champ · Oushi Black (voice) | 2017-08-05 |
| Movie | Uchu Sentai Kyuranger: Episode of Stinger | Champ / Oushi Black (voice) | 2017-10-25 |
| Movie | RE:BORN | Phantom | 2016-09-24 |
| Series | Mob Psycho 100 | Ekubo (voice) | 2016-07-12 |
| Movie | Air Bound | Yoisho (voice) | 2015-10-10 |
| Movie | The Empire of Corpses | M (voice) | 2015-10-02 |
| Movie | Harmony | Asaf (voice) | 2015-11-13 |
| Movie | Space Brothers: Number Zero | Brian Jay (voice) | 2014-08-09 |
| Movie | Hunter x Hunter: Phantom Rouge | Uvogin (voice) | 2013-01-12 |
| Movie | Ghost in the Shell: Stand Alone Complex - Solid State Society 3D | Batou | 2013-05-23 |
| Movie | Berserk: The Golden Age Arc III - The Advent | (voice) | 2013-02-01 |
| Movie | GOTHICMADE | Bottbalt | 2012-01-11 |
| Series | JoJo's Bizarre Adventure | Wham (voice) | 2012-10-06 |
| Movie | Evangelion: 3.0 You Can (Not) Redo | Koji Takao (voice) | 2012-11-17 |
| Movie | Pretty Cure All Stars DX3: Deliver the Future! The Rainbow-Colored Flower That Connects the World | Mushiban | 2011-03-19 |
| Movie | Gokaiger Goseiger Super Sentai 199 Hero Great Battle | Dagon (voice) | 2011-06-11 |
| Series | Blade | Blade (voice) | 2011-07-01 |
| Movie | Black Jack: Final | Black Jack | 2011-12-16 |
| Series | Fate/Zero | Rider(骑乘兵) | 2011-10-02 |
| Movie | Halo Legends | ONI Commander (segment "Prototype") | 2010-02-16 |
| Series | Durarara!! | Shingen Kishitani | 2010-01-08 |
| Movie | Super Street Fighter IV | Seth (voice) | 2010-04-27 |
| Movie | Detective Conan: The Raven Chaser | Jugo Yokomizo (voice)/Sango Yokomizo (voice) | 2009-04-18 |
| Movie | Jungle Emperor: Courage Changes the Future | Ooyama Kenzou (voice) | 2009-09-05 |
| Series | To | 2009-10-02 | |
| Movie | Ghost in the Shell 2.0 | Batou (voice) | 2008-07-12 |
| Movie | Bleach the Movie: Fade to Black | Shunsui Kyōraku (voice) | 2008-12-13 |
| Movie | Yes! Precure 5 Go Go! Movie: Happy Birthday in the Land of Sweets | Mushiban (voice) | 2008-11-08 |
| Series | Devil May Cry | Morisson | 2007-06-14 |
| Movie | Vexille | Saito (voice) | 2007-08-18 |
| Movie | Fist of the North Star: The Legend of Yuria | Souther (voice) | 2007-02-23 |
| Movie | Bleach the Movie: The DiamondDust Rebellion | Shunsui Kyoraku (voice) | 2007-12-22 |
| Movie | Ghost in the Shell: Stand Alone Complex - Solid State Society | Batou (voice) | 2007-09-01 |
| Movie | Sword of the Stranger | Shogen Itadori (voice) | 2007-09-29 |
| Series | Coyote Ragtime Show | Mister | 2006-07-04 |
| Movie | Naruto the Movie: Guardians of the Crescent Moon Kingdom | Michiru Tsuki (voice) | 2006-08-05 |
| Movie | Fist of the North Star: The Legend of the True Savior: Legend of Raoh-Chapter of Death in Love | Souther (voice) | 2006-03-11 |
| Movie | Ghost in the Shell: S.A.C. 2nd GIG - Individual Eleven | Batou (voice) | 2006-01-27 |
| Movie | The Spirit of the Sun | 2006-09-17 | |
| Movie | Bleach the Movie: Memories of Nobody | Shunsui Kyōraku (voice) | 2006-12-16 |
| Movie | The Galaxy Railways: A Letter from the Abandoned Planet | Schwanhelt Bulge (voice) | 2006-12-30 |
| Movie | Paprika | Toshimi Konakawa (voice) | 2006-10-01 |
| Movie | Ghost in the Shell: Stand Alone Complex - The Laughing Man | Batou (voice) | 2005-09-23 |
| Movie | Black Jack: The Two Doctors in Black | Black Jack (voice) | 2005-12-17 |
| Movie | Nitaboh | Santaro (voice) | 2004-02-21 |
| Movie | Ghost in the Shell 2: Innocence | Batou (voice) | 2004-03-06 |
| Series | Samurai Champloo | Okuru | 2004-05-20 |
| Series | Sgt. Frog | Garuru | 2004-04-03 |
| Series | Bleach | Shunsui Kyōraku | 2004-10-05 |
| Series | The Galaxy Railways | Schwanhert Bulge | 2003-10-04 |
| Movie | The Animatrix | Thadeus (voice) | 2003-05-09 |
| Movie | Tokyo Godfathers | Isha (voice) | 2003-12-05 |
| Movie | Inuyasha the Movie 3: Swords of an Honorable Ruler | Inuyasha's father (voice) | 2003-12-20 |
| Series | Ghost in the Shell: Stand Alone Complex | Batou (voice) | 2002-10-01 |
| Series | Tenchi Muyo! GXP | Azusa Masaki Jurai | 2002-04-03 |
| Series | Saint Seiya: The Hades Chapter | Hades (voice) | 2002-11-09 |
| Series | Piano: The Melody of a Young Girl's Heart | Seiji Nomura (voice) | 2002-11-11 |
| Movie | Touch 5: Cross Road | Takeshi Fujimura (voice) | 2001-02-09 |
| Movie | Kinnikuman II | 2001-07-14 | |
| Movie | Lupin the Third: Alcatraz Connection | Andy (voice) | 2001-08-03 |
| Movie | Crayon Shin-chan: A Storm-Invoking Jungle | Paradise King (voice) | 2000-04-22 |
| Movie | Devilman - Volume 3: Devilman Apocalypse | Amon (voice) | 2000-05-24 |
| Movie | Osamu Tezuka's Last Mystery of the 20th Century | Black Jack (voice) | 2000-12-05 |
| Movie | Sin: The Movie | Vincenzo Mancini (voice) | 2000-10-24 |
| Movie | TEKKEN: The Motion Picture | Jack-2 / Narrator (voice) | 1998-01-21 |
| Series | TRIGUN | Rai-Dei the Blade (voice) | 1998-04-02 |
| Movie | Martian Successor Nadesico: The Motion Picture - Prince of Darkness | Koichiro Misumaru (voice) | 1998-08-08 |
| Series | Neo Ranga | Shogo Haseoka | 1998-04-06 |
| Movie | Golgo 13: Queen Bee | Duke Togo / Golgo 13 | 1998-05-21 |
| Movie | Night Warriors: Darkstalkers' Revenge | Demitri | 1997-03-21 |
| Series | Hyper Police | Batanen Fujioka | 1997-04-03 |
| Movie | Hyper Speed GranDoll | 1997-08-23 | |
| Movie | Birdy the Mighty | George Gomez | 1996-07-25 |
| Movie | Slayers Return | Selena's Father (voice) | 1996-08-03 |
| Movie | City Hunter Special: The Secret Service | McGuire (voice) | 1996-01-05 |
| Movie | Panzer Dragoon | Captain / Dragon Blau | 1996-10-26 |
| Movie | Twin Signal: Family Game | Shinnosuke Otoi (voice) | 1996-09-21 |
| Movie | Garzey's Wing | Gelgog Aji (voice) | 1996-09-21 |
| Movie | Lupin the Third: Farewell to Nostradamus | Chris (voice) | 1995-04-22 |
| Movie | Princess Minerva | Whistler 12th (voice) | 1995-05-01 |
| Series | Mobile Suit Gundam Wing | Darlian | 1995-04-07 |
| Series | Saint Tail | Detective Keiji Asuka | 1995-10-12 |
| Movie | Silent Service | Hiroshi Fukamachi (voice) | 1995-12-18 |
| Movie | Ghost in the Shell | Batou (voice) | 1995-11-18 |
| Movie | Darkside Blues | Kenzou (voice) | 1994-10-08 |
| Movie | Crows | 1994-01-28 | |
| Series | Magic Knight Rayearth | Windam | 1994-10-17 |
| Movie | Armed Dragon Fantasy Villgust | 1993-01-21 | |
| Movie | Dragon Half | Damaramu (voice) | 1993-03-26 |
| Movie | Black Jack | Black Jack | 1993-12-21 |
| Movie | Porco Rosso | Donarudo Kâchisu (voice) | 1992-07-18 |
| Movie | Genesis Surviver Gaiarth | 1992-04-22 | |
| Movie | Mobile Suit Gundam 0083: Afterglow of Zeon | Anavel Gato (voice) | 1992-08-29 |
| Movie | Comet in Moominland | Moominpappa (voice) | 1992-08-08 |
| Movie | Lupin the Third: From Siberia with Love | Donbino (voice) | 1992-09-01 |
| Series | Mobile Suit Gundam 0083: Stardust Memory | Anavel Gato | 1991-05-23 |
| Movie | Nadia: The Secret of Blue Water - The Motion Picture | Captain Nemo (voice) | 1991-06-29 |
| Movie | Sukeban Deka | Jūzō Numa (voice) | 1991-04-21 |
| Series | 3x3 Eyes | Benares | 1991-07-25 |
| Movie | Otaku no Video | Banker Kanda (voice) / Narrator | 1991-09-27 |
| Movie | Lupin the Third: Napoleon's Dictionary | McCallum (voice) | 1991-08-09 |
| Series | Nadia: The Secret of Blue Water | Nemo | 1990-04-13 |
| Movie | Shuten Doji - The Star Hand Kid | Iron Kaiser (voice) | 1989-01-01 |
| Movie | Kiki's Delivery Service | Captain of the Airship (voice) | 1989-07-29 |
| Series | Patlabor: The TV Series | Sergeant Tsutomu Gomioka | 1989-10-11 |
| Movie | Angel Cop | Hacker (voice) | 1989-09-01 |
| Movie | Legend of Lemnear | Vuan | 1989-10-05 |
| Movie | Armor Hunter Mellowlink | Lt.Keak | 1988-11-21 |
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