Sekkekkyuu NT4201 "Red Blood Cell" (赤血球 NT4201 / 後輩赤血球) - Cells at Work! (Hataraku Saibou) (はたらく細胞)

Sekkekkyuu AE3803 "Red Blood Cell" (赤血球 AE3803) - Cells at Work! (Hataraku Saibou) (はたらく細胞)

Sekkekkyuu AA5100 "Senpai Sekkekkyuu" Red Blood Cell (赤血球 AA5100 / 先輩赤血球) - Cells at Work! (Hataraku Saibou) (はたらく細胞)