I, the Executioner

Hwang Jung-min

as

Seo Do-cheol

Jung Hae-in

as

Park Sun-woo

Oh Dal-su

as

Oh Jae-pyeong

Oh Dae-hwan

as

Wang Dong-hyun

Jang Yoon-ju

as

Bong Yoon-ju

Kim Si-hoo

as

Yoon Shi-young

Jin Kyung

as

Lee Joo-yeon

Shin Seung-hwan

as

Park Seung-hwan

Jeong Man-sik

as

Jeon Seok-woo

Kwon Hae-hyo

as

Choi Wan-ki

Byun Hong-jun

as

Seo Woo-jin

Tue Minh

as

Tue

Ahn Bo-hyun

as

Min Kang-hoon

Huh Joon-ho

as

Kang Hang-jo

Hyun Bong-sik

as

Ddeokchil

Kim Jae-hwa

as

Madam

Park Jun-myun

as

Gambling Group

Park Kyung-hye

as

Gambling Group

Joo Bo-bi

as

Gambling Group

Kim Won-hae

as

Former Team Le...

Park Myung-shin

as

School Princip...

Ahn Sang-tae

as

Dean of Studen...

Woo Jeong-won

as

Chi-hoon's Mot...

Jo Kwan-woo

as

Chi-hoon's Fat...

Kim Min-su

as

MC Wrecka

Seo Young-joo

as

Fake Haechi

Heo Nam-jun

as

Detective

Nam Jin-bok

as

Police

Yun Jun-yeol

as

Shin Chi-hoon

Hwang In-mu

as

Fire Fist TV

Kim Han-sol

as

Reporter