So-hee
Yoo-jin
Jun-hee
Tae-joon
Dong-ho
Eun-ah
So-hee's Mother
So-hee's Father
Former Team Manager
Ji-won
Jung-in / Customer Oh Joo-yeon (voice)
Director
Newcomer Team Manager
Head Manager
Headquarters Staff 1 / Customer Choi Cheol-woong (voice)
Headquarters Staff 2
Call Center Colleague Yoo-jeong
Call Center Colleague Seon-ae
Call Center Colleague Park Seul-ki
Detective Bae
Detective Kim / Customer Yoon Won-sang (voice)
Chief of Criminal Division
Chief of Police Station
Homeroom Teacher
Vice Principal
Chief of Staff
School Vice-Commissioner
Former Team Manager's Wife
Former Team Manager's Son
Bar Owner
Practice Room Member Soo-yeong
Practice Room Member Hwa-young
Practice Room Member Jae-yeon
Practice Room Member Min-ji
Practice Room Member Ji-ho
Practice Room Member Eun-jeong
Gopchang Restaurant Man
Call Center Guide Staff
New Colleague Myeong-kyeong / Customer Koo Min-seo (voice)
New Colleague Eun-hwa
Call Center Agent / Customer Lee Joo-bin (voice)
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Call Center Agent
Tae-joon's Bullying Colleague
Tae-joon's Factory Colleague
Tae-joon's Factory Colleague
Tae-joon's Factory Colleague
Parking Lot Security Guard
Female Employee on Her Way to Work
Security Guard
Security Guard
Security Guard
Human and Net Staff
Forensic Examiner
Funeral Staff
Redhead Trainee
Trainee
Trainee
Trainee
Chaperone Teacher
Child Going to School
Child Going to School
Child Going to School
Child Going to School
Child Going to School
Child Going to School
Dong-ho's Factory Colleague
Dong-ho's Factory Colleague
Dong-ho's Factory Colleague
Dong-ho's Factory Colleague
Dong-ho's Factory Colleague
Dong-ho's Factory Colleague
Funeral Director
Technical Team Staff / Customer Cho Sang-wook (voice) / Customer Jeong Doo-wan (voice)
Jun-hee's Fan
Police Station Staff
Police Station Staff
Detective Bae's Stand-In
Customer Seo Jang-woo (voice)