- Josh Keaton
- Ray
- Kari Wahlgren
- Anna
- Yuri Lowenthal
- Tyler
- Hynden Walch
- Halle
- Roger Craig Smith
- Eisuke
- Brian Beacock
- Eros
- Beau Billingslea
- Goat-type Alien
- D.C. Douglas
- Alpha
- Zehra Fazal
- Zamza
- Issei Futamata
- Ummite
- Wataru Hatano
- Eisuke
- Miki Itô
- Inkar
- Tetsuya Kakihara
- Tyler
- Hisako Kanemoto
- Halle
- Tom Kenny
- Ummite
- Aleks Le
- Dahar
- Wendee Lee
- Gaia
- Ayumu Murase
- Dahar
- Daisuke Namikawa
- Professor Yoake
- Asami Seto
- Anna
- Fumika Shimizu
- Zamuza
- Hiroshi Shirokuma
- Goat-type Alien
- Keith Silverstein
- Professor Yoake
- Shinnosuke Tachibana
- Eros
- Kirk Thornton
- Geopald
- Frank Todaro
- Additional Voices
- Yûichirô Umehara
- Alpha
- Imari Williams
- Additional Voices
- Hiroki Yasumoto
- Geopard
- Sayaka Ôhara
- Gaia
- Ryôta Ôsaka
- Ray
