Cast & crew
Helck (2023)
Cast
| Katsuyuki Konishi | Stitch (Voice) |
| Mikako Komatsu | Stitch (Voice) |
| Yoshitsugu Matsuoka | Stitch (Voice) |
| Shiori Izawa | Piwi |
| Shuichi Ikeda | Stitch (Voice) |
| Mikako Komatsu | Vermilio (voice) |
| Katsuyuki Konishi | Helck (voice) |
| Yoshitsugu Matsuoka | Azudra (voice) |
| Shiori Izawa | Piwi (voice) |
| Shuichi Ikeda | Narrator (voice) |
Crew
| Daisuke Suzuki | Assistant Art Director |
| Yoshinori Deno | Character Designer |
| Tatsuo Sato | Series Director |
| Miho Hasegawa | Color Designer |
| Katsuhisa Takiguchi | Art Designer |
| Eiji Iwase | Art Direction |
| Nanaki Nanao | Comic Book |
| Tsuyoshi Shimura | Director of Photography |
| Yoshihisa Hirano | Original Music Composer |
| Hiroki Nanami | Theme Song Performance |
| Shinji Takamatsu | Sound Director |
| Keisuke Sogo | Foley Artist |
| Noriko Izumo | Sound Effects |
| Ryoko Kaneshige | Editor |
| Yusuke Ueno | Producer |
| Daisuke Suzuki | Assistant Art Director |
| Tsuyoshi Shimura | Director of Photography |
| Yoshihisa Hirano | Original Music Composer |
| Hiroki Nanami | Theme Song Performance |
| Miho Hasegawa | Color Designer |
| Shinji Takamatsu | Sound Director |
| Eiji Iwase | Art Direction |
| Ryoko Kaneshige | Editor |
| Yusuke Ueno | Producer |
| Yoshinori Deno | Character Designer |
| Tatsuo Sato | Series Director |
| Katsuhisa Takiguchi | Art Designer |
| Nanaki Nanao | Comic Book |
| Noriko Izumo | Sound Effects |
| Keisuke Sogo | Foley Artist |