Doom at Your Service

Park Bo-young

Tak Dong-kyung

Seo In-guk

Myul Mang / Kim Sa-ram

Lee Soo-hyuk

Cha Joo-ik

Kang Tae-oh

Lee Hyun-gyu

Shin Do-hyun

Na Ji-na

Dawon

Tak Seon-kyung

Woo Hee-jin

Kang Soo-ja

Jung Zi-so

So Nyeo-shin

Lee Seung-joon

Jung Seung-jun / Jeong Dang-myeong

Park Tae-in

Park Jung-min

Song Ju-hee

Jo Ye-ji

Choi So-yoon

Kim Da-in

Song Jin-woo

Park Chang-sin

Nam Da-reum

Park Young / Young Prince

Daniel C. Kennedy

Kevin

Jeong Min-gyu

Kang Shin-jae

이예서

Tak Dong-kyung [Young]

Heo Jae-ho

"Jijo King"

Oh Yeon-ah

"Dalgona"

Hong In

Stabbing suspect

Park Jae-joon

Tak Seon-kyung [Young]

Yoo Ha-bok

Joo Ik's father

Lee Jae-eun

Patient

Han Ye-ri

Patient

Kim Ji-seok

Jo Dae-han

Kim Baek-ri

Dae Han's wife

Moon Chang-Wan

Tak Jong-won

Choi Kyo-sik

Dong Kyung's relative

Eom Ok-ran

Dong Kyung's relative

Kim Ji-su

Nurse

Lee Ja-ryeong

Doomsday pamphlet woman

연제훈

Guest Role

Lee Young-joo

Dong Kyung's relative

Lee Jae-eun

Patient

Kwon Soo-hyun

Dong Kyung's blind date

Shin Soo-Hyun

Nurse

Lee Dong-kyu

YBN announcer

Kim Hyo Myung

Subway pervert

Ryu Yeon-seok

Photographer

Oh Nan-Ju

Shaman

Yoon Tae-soo

Restaurant waiter

Son Woo-hyeon

"Siberia"

Min Young

Doctor

Yoon Bok-sung

Judge

Uhm Ja-yoon

Prison officer

Im Yong-soon

Wedding celebration man

Yoo Sung-yeol

Alumnus

Jang Young-hyeon

Alumnus

Park Sang-hyeon

Toshino Publishing staff

Je Seung-hyun

Employee

Kim Sang-Wook

Teacher

Park Bo-eun

Shoes saleswoman

Seon Ah Rin

Handbag customer

Park Seung-jun

Graduating student

Lee Young-hee

Student's grandmother

Lee Hwang-eui

Random guy talking to Myul Mang about flowers

Lee Si-young

Medical receptionist

Shin Mun-sung

Arsonist

Cho Wan-ki

Murderer

Choi Moon-kyoung

Hair stylist

Jeon Ah-hee

Pregnant patient

강정윤

Hospital lobby woman