Kim Si-eun
So-hee
Bae Doona
Yoo-jin
Jung Hoe-ryn
Jun-hee
Kang Hyun-oh
Tae-joon
Bahk Woo-young
Dong-ho
Lee In-young
Eun-ah
Park Hui-eun
So-hee's Mother
Kim Yong-jun
So-hee's Father
Sim Hee-seop
Former Team Manager
Yoon Ga-i
Ji-won
Jung Soo-ha
Jung-in / Customer Oh Joo-yeon (voice)
Park Yoon-hee
Director
Choi Hee-jin
Newcomer Team Manager
Yoo Jeong-ho
Head Manager
Moon Jung-woong
Headquarters Staff 1 / Customer Choi Cheol-woong (voice)
Kim Tae-yoon
Headquarters Staff 2
Yoo Jae-won
Call Center Colleague Yoo-jeong
Kim Hee-won
Call Center Colleague Seon-ae
Park Seo-kyoung
Call Center Colleague Park Seul-ki
Kim Woo-kyum
Detective Bae
Kim Tae-woong
Detective Kim / Customer Yoon Won-sang (voice)
Song Yo-sep
Chief of Criminal Division
Na Jong-min
Chief of Police Station
Heo Jeong-do
Homeroom Teacher
Park Soo-young
Vice Principal
Kwon Da-ham
Chief of Staff
Hwang Jeong-min
School Vice-Commissioner
Han Hye-ji
Former Team Manager's Wife
Sim Ji-an
Former Team Manager's Son
Eom Ok-ran
Bar Owner
Kim Soo-yeong
Practice Room Member Soo-yeong
Lee Hwa-young
Practice Room Member Hwa-young
Yoo Jae-yeon
Practice Room Member Jae-yeon
Cho Yu-jin
Practice Room Member Min-ji
Lee Ji-ho
Practice Room Member Ji-ho
Jang Eun-jeong
Practice Room Member Eun-jeong
Lee Jong-min
Gopchang Restaurant Man
Oh Joong-hoon
Call Center Guide Staff
Na Won-hee
New Colleague Myeong-kyeong / Customer Koo Min-seo (voice)
Jo Ha-min
New Colleague Eun-hwa
Kang Hee-min
Call Center Agent / Customer Lee Joo-bin (voice)
Ko Ha-eun
Call Center Agent
Kim Do-yeon
Call Center Agent
Kim Mi-ri
Call Center Agent
Kim Soo-yeon
Call Center Agent
Kim Chae-won
Call Center Agent
Kim Hye-yoon
Call Center Agent
Park Hyeon-yeong
Call Center Agent
Park Hyeon-ha
Call Center Agent
Baek Seo-yeon
Call Center Agent
Son Jin-joo
Call Center Agent
Yang Ah-reum
Call Center Agent
Yang Yeon-hee
Call Center Agent
Yoon So-hee
Call Center Agent
Yoon Ye-hyeon
Call Center Agent
Lee Se-min
Call Center Agent
Lee Soo-bin
Call Center Agent
Lee Yoo-song
Call Center Agent
Lee Han
Call Center Agent
Im Jin-kyeong
Call Center Agent
Jin Min-jeong
Call Center Agent
Choi Ha-won
Call Center Agent
Park Gun-joo
Tae-joon's Bullying Colleague
Kwon Joon-yeol
Tae-joon's Factory Colleague
Cha Woo-young
Tae-joon's Factory Colleague
Lee Seung-yeong
Tae-joon's Factory Colleague
Yoo Yong-hee
Parking Lot Security Guard
Lee Yoon-ji
Female Employee on Her Way to Work
Min Jae-won
Security Guard
Sin Ho-yeon
Security Guard
Jeon Jeong-hoon
Security Guard
Park Hyeon-gook
Human and Net Staff
Park Seong-woong
Forensic Examiner
Jang In-tae
Funeral Staff
Lee Chae-yeong
Redhead Trainee
Son Yoo-jin
Trainee
Ahn So-jeong
Trainee
Chae-seul
Trainee
Go Eun-seon
Chaperone Teacher
Kang Seo-hoo
Child Going to School
Kwon Hae-rin
Child Going to School
Bae Seo-eun
Child Going to School
Seo Hyo-won
Child Going to School
Seo Jae-hee
Child Going to School
Lee Eun-gyoo
Child Going to School
Kim Ki-hyun
Dong-ho's Factory Colleague
Kim Jae-beom
Dong-ho's Factory Colleague
Kim Jong-hak
Dong-ho's Factory Colleague
Nam Yoon-gi
Dong-ho's Factory Colleague
Seo Sang-woo
Dong-ho's Factory Colleague
Heo Geon-haeng
Dong-ho's Factory Colleague
Gal Jae-yoon
Funeral Director
Kim Jin-yeong
Technical Team Staff / Customer Cho Sang-wook (voice) / Customer Jeong Doo-wan (voice)
Na Ye-eun
Jun-hee's Fan
Kim Ye-na
Police Station Staff
Chu Eun-kyeong
Police Station Staff
Kim Han-saem
Detective Bae's Stand-In
Moon Seong-ryeol
Customer Seo Jang-woo (voice)
Jeong Min-ju
Sound
Lee Young-lim
Editor
Choi Im
Production Design
Kim Dong-ha
Producer
Kim Il-yeon
Director of Photography
Kim Min-jae
Lighting Director
Hong Jang-pyo
Special Effects Supervisor
Choi Kwang-rak
Martial Arts Choreographer
Kim Kyu-man
Sound Mixer
Jeong Seong-uk
VFX Supervisor
Kim Ha-kyoung
Costume Design
Han Ji-youn
Editor
Hwang Jung-ho
Sound Supervisor
July Jung
Director
July Jung
Writer
Kim So-ryeong
Storyboard
Eom Tae-sik
Digital Colorist
Kim Hye-jeong
Boom Operator
O Chang-ryeol
Makeup & Hair
Kim Ji-yeon
Producer
Kim Cha-i
Martial Arts Choreographer
Jang Young-gyu
Original Music Composer
Matt Dugan
Executive Consultant
Kim Han-ul
Assistant Director
Choi Pyung-ho
Executive Producer
Yun-gyeong Kim
Sound Effects Editor