Kana Hanazawa
Red Blood Cell AE3803 (Erythrocyte) (voice)
Tomoaki Maeno
White Blood Cell U-1146 (Neutrophil) (voice)
Kentaro Kumagai
White Blood Cell U-4989 (Neutrophil) (voice)
Daisuke Ono
Killer T Cell (voice), Memory T Cell (voice)
Junichi Yanagita
Gastrointestinal Cell (voice), Sympathetic Nerve Cell Captain (voice), Red Blood Cell 3 (voice), White Blood Cell U-2626 (Neutrophil) (voice), Announcement 2 (voice), Announcement (voice), Ordinary Cell 1 (voice), Red Blood Cell 1 (voice)
Maria Naganawa
Platelet 'Leader' (voice)
Kikuko Inoue
Macrophage (voice), Macrophage / Monocyte (voice)
Akinori Egoshi
Nerve Cell (voice), Naive T Cell 4 (voice), Red Blood Cell 3 (voice), Sweat Gland Cell Captain (voice), Regulatory T Cell 1 (voice), Red Blood Cell 2 (voice), White Blood Cell U-2001 (Neutrophil) (voice), Red Blood Cell 1 (voice)
Juri Kimura
Red Blood Cell 10 (voice), Red Blood Cell 3 (voice), Hematopoietic Stem Cell 1 (voice), Announcement (voice), Red Blood Cell 2 (voice), Announcement 1 (voice), Macrophage 1 (voice), Regulatory T Cell 2 (voice), Red Blood Cell 1 (voice)
Aya Endo
Senior Red Blood Cell AA5100 (voice)
Kensuke Sato
White Blood Cell U-2048 (Neutrophil) (voice)
Gakuto Kajiwara
Killer T Cell 1 (voice), Killer T Cell 2 (voice), Red Blood Cell 1 (voice), Gastrointestinal Cell (voice), Ordinary Cell 1 (voice), Naive T Cell 2 (voice), Red Blood Cell 5 (voice)
Manaka Iwami
Platelet 'Backwards Cap' (voice)
Akira Ishida
Ordinary Cell (voice), Cancer Cell (voice)
Anzu Haruno
Red Blood Cell 4 (voice), Platelet 'Sub-Leader' (voice), Red Blood Cell 3 (voice)
Chitose Morinaga
Red Blood Cell 9 (voice), Platelet 'Kyoro-Eyes' (voice), Red Blood Cell 2 (voice), Red Blood Cell 4 (voice), Hematopoietic Stem Cell 2 (voice)
Saori Hayami
Regulatory T Cell / Immature Thymocyte (voice), Regulatory T Cell (voice)
Yuka Nukui
Sweat Gland Cell 1 (voice), Macrophage 2 (voice), Red Blood Cell 2 (voice), Macrophage 1 (voice)
Hiroki Maeda
Ordinary Cell 1 (voice), Ordinary Cell 3 (voice), Venous Valve Cell (voice), Cancer Cell 3 (voice), Ordinary Cell 4 (voice)
Jun Fukushima
Helicobacter Pylori (voice), Mumps Virus (voice), Bacterium (voice)
Ryota Suzuki
Killer T Cell 2 (voice), Killer T Cell 3 (voice), Red Blood Cell 2 (voice), White Blood Cell 1 (Neutrophil) (voice), Naive T Cell 3 (voice), Red Blood Cell 7 (voice), Killer T Cell 1 (voice)
Jun Kasama
Red Blood Cell 8 (voice), Pneumococcus 1 (Streptococcus Pneumoniae) (voice), Thymic Epithelial Cell 1 (voice), Secretory Cell Captain (voice), Red Blood Cell 4 (voice)
Chiaki Kobayashi
Red Blood Cell 2 (voice), Red Blood Cell 1 (voice), Red Blood Cell 3 (voice), Ordinary Cell 2 (voice)
Taito Ban
Intestinal Epithelial Cell (voice), Red Blood Cell 2 (voice), Red Blood Cell 1 (voice), Cancer Cell 1 (voice)
Yui Ishikawa
Junior Red Blood Cell NT4201 (voice)
Yu-ri Yoshida
Black Lactic Acid Bacterium (voice)
Mēmu Tachibana
Platelet 'Sotohane-Hair' (voice)
Riki Kitazawa
Pseudomonas Aeruginosa (voice), Bacterium (voice)
Rikuya Yasuda
Ordinary Cell 2 (voice), White Blood Cell 1 (Neutrophil) (voice), Red Blood Cell 1 (voice), Red Blood Cell 2 (voice)
Hiroyuki Yoshino
Pneumococcus (Streptococcus Pneumoniae) (voice)
