Manga
Cancer Cell
Senpai Red Blood Cell (Ep 3, 8)
Large Intestine Cell (Ep 6) / Platelet
Mast Cell (Ep 3)
"Kyoro-chan" Platelet
Killer T Cell
Opportunistic fungus 2 (Ep 8)
Red Blood Cell 1 (Ep 1)
General Cell 3 (Ep 5)
H. Pylori (Ep 4) / Mumps Virus (Ep 2)
White Blood Cell (Neutrophil 2626)
Red Blood Cell (Erythrocite)
Macrophage
Narrator
Leader Platelet
Langerhans Cell (Ep 3)
Elder Hair Matrix Cell (Ep 3)
Dendritic Cell
Pigment Cell (Ep 3)
Lactic Acid Bacteria (red)
Pseudomonas Aeruginosa (Ep 4)
Killer T Cell (Ep 2, 6)
Regulatory T Cell
M Cell (Ep 2)
Killer T Cell (Ep 6)
Helper T Cell (T Lymphocyte)
General Cell 2 (Ep 2)
NK Cell
White Blood Cell (Neutrophil)
Basophil (Ep 3)
Bad Bacteria (Ep 6-8)
Bad Bacteria (Ep 6)
Junior Red Blood Cell
Memory Cell
Opportunistic fungus 1 (Ep 8)
Megakaryocyte
Lovely Microbe (Ep 1)
Lactic Acid Bacteria (brindle)
Kikuko Inoue (Macrophage)
Kana Hanazawa (Red Blood Cell (Erythrocite))
Aya Yamane
(Large Intestine Cell (Ep 6) / Platelet)
Rolle: Large Intestine Cell
Tomoaki Maeno (White Blood Cell (Neutrophil))
Tomokazu Sugita (Basophil (Ep 3))
Yukari Tamura (Opportunistic fungus 1 (Ep 8))
Yûko Kaida (Megakaryocyte)
Tomokazu Sugita (Basophil (Ep 3))