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

Yoon Yi-reh

Peach

Choi Dae-sung

Moon Choi

Seri (voice)

Kim So-min

Choi Han-gi's youngest son