 | Kokoro Hirasawa als Earwig (voice) |
 | Shinobu Terajima als Bella Yaga (voice) |
 | Gaku Hamada als Thomas (voice) |
 | Sherina Munaf als Earwig's Mother (voice) |
 | Etsushi Toyokawa als The Mandrake (voice) |
| Goro Miyazaki | Director |
| Toshio Suzuki | Producer |
| Diana Wynne Jones | Novel |
| Katsuya Kondo | Character Designer |
| Koji Kasamatsu | Sound Director |
| Yukinori Nakamura | CG Supervisor |
| Yuhki Takeuchi | Background Designer |
| Eriko Kimura | Recording Supervision |
| Sherina Munaf | Vocals |
| Hiroki Kamemoto | Musician |
| Kiyokazu Takano | Musician |
| Kavka Shishido | Musician |
| Satoshi Takebe | Original Music Composer |
| Satoshi Takebe | Keyboard Programmer |
| Tan Seri | Animation Director |
| Goro Miyazaki | Screenplay |
| Yusuke Hirota | Animation |
| Isao Yoshikuni | Production Supervisor |
| Keisuke Tsuchihashi | Production Supervisor |
| Koji Hoshino | Production Supervisor |
| Keiko Niwa | Screenplay |
