Iwata Mitsuo roles
Anime
Mitsuo has done the following roles in anime.
| Aa Megami-sama Chicchaitte Kotoha Benridane | Gan-chan |
| Akira | Kaneda |
| Arad Senki Slap Up Party [2009] | Halsen |
| Beast Wars | Silverbolt |
| BECK | Tanabe |
| Boku no Marie | Karigari Hiroshi |
| Brigadoon | Mike White |
| Brigadoon | Poikun |
| DNA^2 | Kakimaro Someya |
| Doukyuusei | Morooka Wataru |
| Ehrgeiz | Jay |
| Futari ha Pre Cure Splash Star | Dorodoron |
| Golden Boy | Kintarou Oe |
| Gun X Sword | Buchi |
| Hikari to Mizu no Daphne -Daphne in the Brilliant Blue- [2004] | Hanaoka Tsutomu |
| Hikaru no Go [2001] | Kurata Atsushi |
| Initial D | Takeuchi Itsuki |
| Jinki Extend | Karisu |
| Kodomo no Omocha (TV) | Tanaka-sensei |
| Kodomo no Omocha (TV) | Suzy |
| Koko ha Greenwood | Ikeda Mitsuru |
| Mahou no Stage Fancy Lala [1998] {Episode 22} | Sugio Takuya |
| Megazone 23 {part III} | Akira |
| Musekinin Kanchou Tylor | Sakai Kojiro |
| Nozomi Witches {volume 3} | Yuugo |
| Nurse Witch Komugi-chan Majikarte | Akahori Satoru |
| Onegai Teacher [2001] | Magumo Hyosuke |
| Ore no Imouto ga Konnani Kawaii Wake ga Nai 2 [2013] | Comet-kun |
| Ore Twintail ni Narimasu [2014] | Owl Guildy |
| Sasaki to P-chan [2024] | Marc |
| Sensei no Ojikan [2004] | Nakamura Gen (Oyaji) |
| Shakugan no Shana II [2007-2008] | Marchosias |
| Shakugan no Shana movie [2007] | Marchosias |
| Shin Megami Tensei Devi Chil (Debichiru) [2000] | Fenlil |
| Strange Dawn [2000] | Beret |
| Stratos Four | Sako |
| Tenshi ni Narumon | Dispell-sama |
| Time Stranger | Hasegawa Shinichi |
| Toriko [2011-2013] | Sunny |
| Urusei Yatsura {movie 3} [debut] | Magician Ruu |
| Vandread | Pyoro |
| Yagami-kun no Katei no Jijou [1990] | Ichigaya Kazuki |
Games
Mitsuo has done the following roles in games.
| Angelique Trois [Playstation2] | Zefel |
| Fushigi no Kuni no Angelique [Win95, PC-FX, PlayStation, Sega Saturn] | Zefel |
| Kouda Mariko no Dokidoki On Air [WIN] | Iwata Mitsuo |
| Meguri Aisite [Playstation] | Hirayama Takeshi |
| Super Robot Taisen Original Generations [PlayStation 2] | Kail |
Drama
Mitsuo has done the following roles in audio drama.
| Aa Megami-sama Tokuten Ou [CD] | Nezumi-san |
| Guy Brave [CD] | Ken |
| Happy Boy [CD] | Kitsune |
| Kimagure Orange Road Original [CD] | Komatsu Seiji |
| Koko wa Green Wood [CD] | Ikeda Mitsuru |
| Tengai Makyou [CD] {Volume 1} | ? |
