Abyss

Park Bo-young

Go Se-yeon / Lee Mi-do

Ahn Hyo-seop

Cha-min

Lee Sung-jae

Oh Young-cheol

Lee Si-eon

Park Dong-cheol

Song Sang-eun

Lee Mi-do

Han So-hee

Jang Hee-jin

Kwon Soo-hyun

Seo Ji-wook

Yun Yoo-sun

Eom Ae-ran

Park Seong-yeon

Park Mi-soon

Lee Cheol-min

Park Ki-man

Kim Sa-rang

Go Se-yeon

Ahn Se-ha

Cha-min

Kang Ye-seo

Young Jang Hee-jin

Ha Sung-kwang

Go Chang Soo [Se Yeon's father]