Seong Gi-hun / 'No. 456' (17 Episodes)

Hwang Jun-ho (9 Episodes)

Front Man (10 Episodes)

Jung-bae (8 Episodes)

Cho Sang-woo / 'No. 218' (9 Episodes)

Kang Sae-byeok / 'No. 067' (9 Episodes)

Oh Il-nam / 'No. 001' (9 Episodes)

Jang Deok-su / 'No. 101' (9 Episodes)

Han Mi-nyeo / 'No. 212' (9 Episodes)

Ali Abdul / 'No. 199' (9 Episodes)

Ji-young / 'No. 240' (9 Episodes)

Yong-sik (8 Episodes)

Dae-ho (8 Episodes)

Jun-hee (8 Episodes)

Gyeong-seok (8 Episodes)

Myung-gi (8 Episodes)

Geum-ja (8 Episodes)

Hyun-ju (8 Episodes)

No-eul (8 Episodes)

Seon-nyeo (8 Episodes)

Min-su (8 Episodes)

Thanos (8 Episodes)

Nam-gyu (8 Episodes)

Se-mi (8 Episodes)

'No. 278' (4 Episodes)

'No. 244' (4 Episodes)

'No. 028' [Worker] (3 Episodes)

Gi-hoon's mother (3 Episodes)

'No. 111' (3 Episodes)

'No. 369' (3 Episodes)

'No. 069' (3 Episodes)

'No. 196' (3 Episodes)

'No. 021' (3 Episodes)

'No. 322' (3 Episodes)

'No. 062' (3 Episodes)

Gi-hoon's ex-wife (2 Episodes)

Seong Ga-yeong (2 Episodes)

'No. 194' (2 Episodes)

'No. 070' (2 Episodes)

'No. 017' (2 Episodes)

'No. 453' (2 Episodes)

VIP 4 (2 Episodes)

VIP 2 (2 Episodes)

VIP 1 (2 Episodes)

Sae-byeok's brother (2 Episodes)

'No. 119' (2 Episodes)

'No. 271' (2 Episodes)

The Salesman (2 Episodes)

Loan shark (1 Episodes)

Racetrack man (1 Episodes)

Dorm owner (1 Episodes)

Kim Jin Woo (Police 2) (1 Episodes)

Kim Sang Hyuk (Police 1) (1 Episodes)

Ali's wife (1 Episodes)

'No. 118' (1 Episodes)

△ Mask / Surgery Room Guard 2 (1 Episodes)

'No. 308' (1 Episodes)

'No. 096' (1 Episodes)

Flower seller (1 Episodes)

Banker (1 Episodes)

'No. 250' (1 Episodes)

'No. 107' (1 Episodes)

□ Mask (1 Episodes)

Surgery Room Guard (1 Episodes)

Ha Sun Young [Teller] (1 Episodes)

Cho Sang Woo [Young] (1 Episodes)

Seong Gi Hoon [Child] (1 Episodes)

Yoon [Emergency Medical Center doctor] (1 Episodes)

Detective (1 Episodes)

Detective (1 Episodes)

Gang member (1 Episodes)

Factory owner (1 Episodes)

Ga Yeong's brother (1 Episodes)

Fish shop customer (1 Episodes)

Ga Yeong's stepfather (1 Episodes)

Gi Hoon's friend's wife (1 Episodes)

North Korean defector shelter employee (1 Episodes)

'No. 276' (1 Episodes)

Hair Stylist (1 Episodes)

Girl in a leopard bodypaint (1 Episodes)

No. 324 (1 Episodes)