Shin Ha-kyun
Jae-hyeon (6 eps)
Han Ji-min
Cha Yi-hoo (6 eps)
Lee Jung-eun
Siren (6 eps)
Jung Jin-young
Doctor K (6 eps)
Yoon Yi-reh
Peach (6 eps)
Choi Hee-seo
Seri (voice) (6 eps)
Kim So-min
Choi Han-gi's youngest son (6 eps)
