On screen
Cast
12 credited performers
Shin Ha-kyun
Jae-hyeon
Han Ji-min
Cha Yi-hoo
Lee Jung-eun
Siren
Jung Jin-young
Doctor K
Bae Yu-ram
Hacker Park
Cha Soon-bae
Character not listed
Yoon Yi-reh
Peach
Choi Dae-sung
Character not listed
Moon Choi
Seri (voice)
Kim So-min
Choi Han-gi's youngest son
Kim Kwang-shik
[Audience member]
Lee Young-suk
[Clinical trial participant]