| Ninomiya Kiko | Yukino Satsuki |
| Ninomiya Makiko (Kiko-chan's Mama) | Takada Yumi |
| Ninomiya Tarou (Kiko-chan's Papa) | Miyamoto Mitsuru |
| Shibahara Megumi (Megumi-sensei) | Mizutani Yuko |
| Honto wa Tenshi | Okano Kousuke |
| Narration | Horiuchi Kenyuu |
| Masakado | Takimoto Fujiko |
| Shizuka | Kawata Taeko |
| Shizuka (ep.32-33) [Substitute Voice] | Ootani Ikue |
| Yoshinaga Saori | Amano Yuri |
| Madoka | Niwa Shihori |
| Mamoru | Matsumoto Sachi |
| Naoki Ryuunosuke | Isobe Hiroshi |
| Enchou-sensei [Headteacher] | Mine Atsuko |
| Kaori-sensei | Kobayashi Yuuko |
| Miyuki-sensei (ep.1,5,8,11-12,15,18,20) | Watanabe Misa |
| Sayaka (ep.1,6-8,11,18,27-28,30-31,34,36,43) | Araki Kae |
| Konishiki (ep.1,3-4,10,15,19,22,24,42,48) | Shimaka Yuu |
| Kotara (ep.1,3-4,19,22,24,42,48) | Ogata Mitsuru |
| Sankichi (ep.1,3-4,19,22,24,42,48) | Ishino Ryuuzou |
| Voice of the Sea (ep.2) | Yanada Kiyoyuki |
| Beach Girl A (ep.2) | Kamei Yoshiko |
| Beach Girl B (ep.2) | Okamura Akemi |
| Beach Girl C (ep.2) | Tsumura Makoto |
| Official (ep.2) | Ii Atsushi |
| Rooza [Rosa] (ep.3-4.9.19.22-23.31) | Watanabe Misa |
| Jon (ep.4) | Yanada Kiyoyuki |
| Takashi (ep.4,15) | Nishimura Chinami |
| Takashi's Mother (ep.4) | Amano Yuri |
| Ojii-chan (ep.5,11-13) | Tsukada Masaaki |
| Obaa-chan (ep.5,11-13) | Koumura Toshiko |
| Ballet Teacher (ep.7,11,29,38,47) | Tanaka Atsuko |
| Abacus Teacher (ep.7) | Naka Hiroshi |
| Kendo Teacher (ep.7) | Tsuji Shinpachi |
| TV Woman (ep.9) <Unconfirmed!> | Amano Yuri |
| Kotenshi Pu (ep.10,12,37) | Niwa Shihori |
| Takako-sensei (ep.10,12,18,36) | Matsumoto Sachi |
| Bank Oneesan (ep.10) | Watanabe Misa |
| Megumi's Mother (ep.10,13,16,18,23,27,32-33,40,51) | Kubota Tamie |
| Megumi's Father (ep.10,13,16,18,32,40,51) | Inaba Minoru |
| Santa Claus (ep.11) | Nishio Toku |
| Kotenshi Pa (ep.12,37) | Kawata Taeko |
| Kotenshi Pe (ep.12.37) | Takimoto Fujiko |
| Kotenshi Po (ep.12,14,37) | Amano Yuri |
| Ichikawa-san (ep.12) | Hayashi Nobutoshi |
| Saori's Mama (ep.13,25,36,50) | Watanabe Misa |
| Hiiobaa-chan [Granny] (ep.14,39,44-46) | Yukino Satsuki |
| English-Language Classroom Teacher (ep.14,20,47) | Ootsu Tomoko |
| Prowler (ep.16) | Tsuji Shinpachi |
| Boxer (ep.16) | Matsumoto Yasunori |
| Kiyomasa (ep.17,27-28) | Kamei Yoshiko |
| Space-Alien Alpha (ep.17) | Tatsuta Naoki |
| Yaota (ep.17) | Madono Mitsuaki |
| Richard (ep.20-21) | Kanemaru Junichi |
| Oshou-san [Head Monk] (ep.20) | Maruyama Eiji |
| Daikokuya (ep.24) | Koyama Takehiro |
| Warui (ep.25) | Mizuno Ryuuji |
| Chairperson (ep.25) | Kase Yasuyuki |
| Producer (ep.25) | Ookawa Tooru |
| Director (ep.25) | Arakawa Tarou |
| Assistant Director (ep.25) | Takase Akimitsu |
| Driver (ep.26) | Bandou Naoki |
| Hide (ep.27-28,45) | Naya Rokurou |
| Tatsuo (ep.27-28) | Kida Ayumi |
| Shigeru (ep.27-28) | Mizuhara Rin |
| Player A (ep.27) | Kumai Motoko |
| Kenta (ep.27) | Saitou Shuu |
| Shiratori Mai (ep.29,38,47,51) | Ootani Ikue |
| Shiratori Izumi (ep.29,38,47) | Kataoka Tomie |
| Hoanofusukii (ep.29) | Arimoto Kinryuu |
| Ijuuin Reiko (ep.30-31) | Inoue Kikuko |
| Masakado's Mum (ep.31,34,43) | Takimoto Fujiko |
| Shizuka's Mama (ep.31,50) | Kawata Taeko |
| Pianist (ep.31) | Sakano Shinya |
| Doujima Shouko (ep.32,40,44,51) | Matsui Naoko |
| Doctor M (ep.33) | Umezu Hideyuki |
| Baku (ep.34) | Iwanaga Tetsuya |
| Sentarou (ep.34,39) | Yukino Satsuki |
| Kaitou Rapan (ep.35,41,44,49) | Yasuhara Yoshito |
| Police Inspector Nishikawa (ep.35,41,49) | Akimoto Yousuke |
| Police Detective Tooyama (ep.35,41,49) | Ogihara Hideki |
| Saori's Papa (ep.36,50) | Gotou Atsushi |
| Company President (ep.36) | Ooyama Takao |
| Naoki-san's Father (ep.37,40,50) | Fujishiro Yuuji |
| Naoki-san's Mother (ep.37,40,50) | Sadaoka Sayuri |
| Kotenshi Pi (ep.37) | Mizutani Yuko |
| Naoki Midori (ep.37) | Niwa Shihori |
| Moon Dragon (ep.39) | Ebara Masashi |
| Honto wa Akuma (ep.42,48,51) | Umezu Hideyuki |
| Minoru (ep.42) | Kamei Yoshiko |
| Old Woman (ep.43) | Kyouda Hisako |
| Driver (ep.43) | Hoshino Mitsuaki |
| Dorth Vadar (ep.44) | Horiuchi Kenyuu |
| Umeda (ep.45) | Tahara Aruno |
| Manager (ep.45) | Hayashi Kazuo |
| Kagayaki Hikaru (ep.45) | Ishida Akira |
| Director (ep.45) | Yoshida Takashi |
| Chairperson (ep.45) | Ochiai Kouji |
| Pirate's Voice (ep.46) | Nagashima Yuuichi |
| Guide (ep.46) | Tobita Nobuo |
| Waiter (ep.48) | Kase Yasuyuki |
| Hiraga Gentarou (ep.48,51) | Mine Eken |
