Kana Hanazawa

Red Blood Cell AE3803 (Erythrocyte) (voice)

Tomoaki Maeno

White Blood Cell U-1146 (Neutrophil) (voice)

Akira Ishida

Cancer Cell (voice)

Saori Hayami

Regulatory T Cell (voice)

Daisuke Ono

Killer T Cell (voice) / Memory T Cell (voice)

Toa Yukinari

NK Cell (voice)

Kikuko Inoue

Macrophage (voice)

Maria Naganawa

Platelet 'Leader' (voice)

Yusuke Kobayashi

Ordinary Cell (voice)

Yu-ri Yoshida

Black Lactic Acid Bacterium (voice)

Rie Takahashi

Red Lactic Acid Bacterium (voice)

Natsumi Fujiwara

Panda Lactic Acid Bacterium (voice)