| Keroro-gunsou | Watanabe Kumiko |
| Hinata Fuyuki [1] (up to ep.231) | Kawakami Tomoko |
| Hinata Fuyuki [2] (ep.232+) | Kuwashima Houko |
| Tamama-nitouhei | Kozakura Etsuko |
| Giroro-gochou | Nakata Jouji |
| Kururu-souchou | Koyasu Takehito |
| Dororo-heichou | Kusao Takeshi |
| Hinata Natsumi | Saitou Chiwa |
| Angoru Moa | Noto Mamiko |
| Houjou Mutsumi (623) (Saburou) | Ishida Akira |
| Nishizawa Momoka | Ikezawa Haruna |
| Hinata Aki | Hiramatsu Akiko |
| Azumaya Koyuki | Hirohashi Ryou |
| Karara (ep.65, 94) | Noda Junko |
| Talking | Daikoku Yumiko |
| Shiwasu Satsuki | Matsuura Chie |
| Kasu | Matsuura Chie |
| Yuurei-chan (Yuurei Shoujo) | Matsuura Chie |
| Rune | Matsuura Chie |
| Uchuusen Nabi | Matsuura Chie |
| Saleschild | Matsuura Chie |
| Male Child | Matsuura Chie |
| Female Child | Matsuura Chie |
| Classmate | Matsuura Chie |
| Child | Matsuura Chie |
| Monkey | Matsuura Chie |
| Girl | Matsuura Chie |
| Female High-School Student | Matsuura Chie |
| Female | Matsuura Chie |
| Sukeban | Matsuura Chie |
| Pupil | Matsuura Chie |
| Panda Musume | Matsuura Chie |
| Maid | Matsuura Chie |
| Uchuu Hiru | Ishida Akira |
| Deshiberu-kun | Ishida Akira |
| Mutsuzou | Ishida Akira |
| Giroro-gochou (Childhood)/Chibi-Giroro | Hiramatsu Akiko |
| 雪乃進 | Hirohashi Ryou |
| 八八十's Mother | Takizawa Kumiko |
| Male Child | Hayakawa Takayuki |
| Clerk-in-Charge | Hayakawa Takayuki |
| Female | Ishikawa Momoko |
| Male Pupil | Nakamura Mizuki |
| Darere [Keroro Gunsou Otsu (2010)] | Ueda Yuuji |
| Angoru Moa's Papa | Tachiki Fumihiko |
| Gomakka-seijin | Tachiki Fumihiko |
| Butcher's Shop Shopkeeper | Yanai Ken |
| Toranku | Kusunoki Taiten |
| Terara [2011] | Ootani Ikue |
| Soccer Boy (ep.42) | Asano Mayumi |
| Momo-hime | Ikezawa Haruna |
| Space Alien | Ikezawa Haruna |
| 556 (Kogorou) | Hiyama Nobuyuki |
| Hero | Hiyama Nobuyuki |
| Caucasus Ookabuto | Hiyama Nobuyuki |
| 悪玉菌 | Hiyama Nobuyuki |
| Ex-Missile | Hiyama Nobuyuki |
| Isoroku | Hiyama Nobuyuki |
| Male Child | Hiyama Nobuyuki |
| Rabii | Kaneda Tomoko |
| Orabi | Kaneda Tomoko |
| Children | Kaneda Tomoko |
| Viper Family | Tobita Nobuo |
| Geiru | Tobita Nobuo |
| Geron-jin #128 | Tobita Nobuo |
| Narrator | Fujiwara Keiji |
| Paul Moriyama | Fujiwara Keiji |
| Nyororo | Fujiwara Keiji |
| Zezezettototoso | Fujiwara Keiji |
| Poyon-chan | Omimura Mayuko |
| Police Detective | Tajima Yuuya |
