| Seiyuu | Role |
| Minami Takayama | Thor (young) |
| Shun Oguri | Third |
| Kiyotaka Furushima | Kevin (Episode 5, 6, 8 - 10) |
| Akimitsu Takase | Rada |
| Romi Paku | Karim |
| Rika Fukami | Chen |
| Kazuya Nakai | Zagi |
| Nana Mizuki | Tiz |
| Seiji Sasaki | Ochre Ring's Top (Episode 2, 4, 5) |
| Keiji Fujiwara | Heimdall (Episode 7) |
| Hisao Egawa | Loki (Episode 7) |
| Kinryu Arimoto | Odin (Episode 7) |
| Hiroki Takahashi | Tatou (Episode 6) |
| Takaya Kuroda | Jesso (Episode 6) |
| Tomoyuki Shimura | Yuuki (Episode 6) |
| Ryoka Yuzuki | Sayo (Episode 3 & 4) |
| Kazuo Hayashi | Theo Klein (Episode 2) |
| Akiko Kimura | Rika (Episode 2) |
| Minami Takayama | Rai |
| Shouzou Iizuka | Colin (Episode 4) |