(Ep 1,11)
Manga
Brain Cell (Operator) (Ep 1, 3, 6-7, 9-13)
White Blood Cell (Neutrophil) (Ep 4, 11)
Brain Cell (Operator) (Ep 1, 3, 6-7, 10-13) / Hair Matrix Cell (Ep 5) / Red Blood Cell (Ep 8)
General Cell (Ep 9, 11)
Brain Cell (Command)
Accessory Cell (Ep 10, 13) / Brain Cell (Operator) (Ep 3, 6-7, 9, 11) / Hair Matrix Cell (Ep 5) / Mucosa Cell (Ep 2) / Pneumonia Coccus (Ep 1, 8, 12)
Red Blood Cell (Erythrocite)
Brain Cell (Director) (Ep 12)
Narratoer
Red Blood Cell (1677)
Helper T Cell (Ep 4-5)
White Bood Cell (Neutrophilic)
Sertoli Cell (Ep 3-4, 9) / White Blood Cell (Neutrophil) (Ep 11)
Liver Cell
Gonococcus (Ep 4) / Hair Matrix Cell (Ep 7, 12-13) / Killer T Cell (Ep 9) / Red Blood Cell (Ep 1-2, 8, 10) / Steroid (Ep 5)
White Blood Cell (Neutrophil) (Ep 4)
General Cell (Ep 4, 11) / Hair Matrix Cell (Ep 5)
Red Blood Cell (Ep 3)
White Blood Cell (Neutrophilic)
Red Blood Cell (Ep 9, 12-13)
Red Blood Cell (Ep 7) / Red Blood Cell (6614) (Ep 1-2)
White Bood Cell (Neutrophilic)
Platelet
Aya Endô (General Cell (Ep 9, 11))
Yurika Kubo (Platelet)
Yûki Sanpei
(Red Blood Cell (Ep 7) / Red Blood Cell (6614) (Ep 1-2))
Rolle: Red Blood Cell (6614)
Yôko Hikasa (White Blood Cell (Neutrophilic))