| Episode cast overview, first billed only: |
 | Katsuhiro Suzuki | - | Hiromu Sakurada / Red Buster |
| Ryôma Baba | - | Ryuji Iwasaki / Blue Buster |
| Arisa Komiya | - | Yoko Usami / Yellow Buster |
| Hiroya Matsumoto | - | Masato Jin / Beet Buster |
 | Yûichi Nakamura | - | Beet J. Stag / Stag Buster (voice) |
| Keiji Fujiwara | - | Cheeda Nick (voice) |
 | Tesshô Genda | - | Gorisaki Banana (voice) |
| Tatsuhisa Suzuki | - | Usada Lettuce (voice) |
| Hideo Sakaki | - | Takeshi Kuroki |
| Fuka Nishihira | - | Miho Nakamura |
| Naoto Takahashi | - | Toru Morishita |
| Ryu Hashizume | - | Hiromu Sakurada (child) |
| Shô Jinnai | - | Enter |
| Kodai Matsuda | - | Ryuji Iwasaki (teenager) |
| Kokoro Hirasawa | - | Yoko Usami (child) |
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