• Shintaro Oyama: Shigehisa Ono
• Hatsue Oyama: Midori Kato
• Hajime Oyama: Yoshikazu Yamada
• Midori Oyama: Mayumi Sakuma
• Makoto Oyama: Nobuyoshi Fukuda
• Robin-chan: Kaho Shimada
• Yamamoto-sensei: Yukari Yamamoto
• Polisi Machida: Toru Yuri
• Taro Ogawa: Masahiro Sumiyoshi
• Yoshiko Ogawa: Miyuki Ueda
• Mayumi Ogawa: Yukiko Ebina
• Susumu Ogawa: Makoto Honda

Pelakon suara

• Robocon: Keiko Yamamoto
• Gantz-sensei: Keiichi Noda
• Robogari: Sachiko Chijimatsu
• Robopar/ Robo Mecha: Koji Yada
• Robowal / Robopu / Robobin: Ichiro Nagai
• Robodoro / Roboton: Kenichi Ogata
• Roboton: Keaton Yamada
• Robosho / Robokiwi / Robochoi: Sanji Hase
• Roboton / Robogaki / Robogera: Osamu Kato
• Robopecha / Robopyon: Kazuko Sawada
• Robowal / Robocar: Yonehiko Kitagawa
• Robodeki: Akira Kamiya
• Robomero: Junko Hori
• Roboinu: Kaneta Kimotsuki / Shun Yashiro
• Roboriki: Hiroshi Masuoka
• Robopeka: Isamu Tanonaka
• Robo-chan: Kazuko Sugiyama