Real

Kim Soo-hyun

As Jang Tae-yeong

Sung Dong-il

As Jo Won-geun

Lee Sung-min

As Choi Jin-gi

Sulli

As Song Yoo-hwa

Jo Woo-jin

As Sa Do-jin

Kim Hong-pa

As Choi Nak-hyeon

Jeong In-kyeom

As Professor Kim

Choi Kwon

As Manager Baek

Ko Kyu-pil

As Bald man

Han Ji-eun

As Han Ye-won

Jung Yi-seo

As Addict

Lee Jung-hyun

As Gangster in Chinatown

Son Hyun-joo

As Patient

Park Seo-jun

As Bodyguard

Kim Da-som

As Therapist

An So-hee

As Restaurant Waitress

Suzy

As Tatuist

Gyeongree

As Waitress

Park Min-ha

As Waitress

Ah Ri

As Brothel Men-Women

Suh Zi-eun

As Secret Room Club Addict 1

Lee Chae-dam

As Secret Room Club Addict 2

Lee Kyung-young

As No-yeom

Yoon Kyung-ho

As Broker

Lee Gi-dong

As Chief Police Officer

Kim Song-il

As Capital CEO

Kim Hye-hwa

As Im Ra-hee

IU

As Awards Ceremony Guide

Jason Scott Nelson

As Max

Lim Dong-yoon

As Meatpacking Factory Worker

Hyun Bong-sik

As Chinese Restaurant Employee

Oh Ji-young

As Private Gambling Place Madame