Ray (1 episode)

Producer (1 episode)

Director

Writer

Lim Hyeon-jun (16 episodes)

Self

Self (1 episode)

Self (1 episode)

Lim Seok-yong

Self (1 episode)

Master Sol (8 episodes)

Self (1 episode)

Self (2 episodes)

Beta

Self (1 episode)

Self (2 episodes)

(2 episodes)

Park Pyong-ho

Writer

Producer

Director

Self (1 episode)

Self (1 episode)

Self (2 episodes)

Self (4 episodes)

Self (1 episode)

Seong Gi-hun / Player 456 (22 episodes)

Self (archive footage) (1 episode)

Jang Tae-Jun (1 episode)

Ray

Jang Tae-Joon (20 episodes)

Lawyer (cameo)

Pastor Park Ung-jae

King Yeomra

King Yeomra

Tow

Jang Hak-soo

Kang Seung-joon

Yeom Seok-jin

Choi Ik-ho

Grand Prince Soo-yang

Lee Ja-sung

Popie

He

Hoon

Shin Hwal (16 episodes)

Cheon-doong

Kim Ji-sung (16 episodes)

Gang Se-jong

Oh Sang-woo

Lee Jin-soo

Detective Oh

Dust

Jung Yong-gi

Woo-in

Han Sung-hyun

Eun-seok

Yi Jae-su

Hong-ki

Woo In

Lee Young-jun (20 episodes)

Dong-cheol (16 episodes)

Park Su-sok

Young-hoo

Pyeong-san

Na Jae-sung (16 episodes)

Baek Jae-hee (24 episodes)

Lee Han

Joon (16 episodes)

Jung-jae (70 episodes)

Blackguard 3