Shin Ha-kyun

as YGP / Park Yong-gu

as Jeong Ho-myeong(12 eps)

as 내레이션(2 eps)

as Self(2 eps)

as Self(1 ep)

as Self(8 eps)

as Shin Cha-il(12 eps)

as Han Dong-soo(10 eps)

as Self(1 ep)

as Self(2 eps)

as Jae-hyeon(6 eps)

as Steve(12 eps)

as Choi In-ho

as Lee Dong-sik(16 eps)

as Lee Shi-joon(32 eps)

as Ali (voice)

as Kang Sang-Gu

as Se-ha

as Lee Moo-bae

as Woo Tae-suk(32 eps)

as Self(1 ep)

as Bong-soo

as Doo-sik

as Joong-sang

as Jeong Woo-jin

as Joong-pil

as Joo Sung-Chan(16 eps)

as Kim Min-jae

as Ace

as Choi Go-bong / Choi Shin-hyung(16 eps)

as Kim Soo Young(16 eps)

as Cha Jong-woo

as Art Curator

as Self(2 eps)

as Lee Kang-hoon(20 eps)

as Kang Eun-pyo

as Young-soo

as Jang-bae

as Doctor of Engineering

as Self(1 ep)

as Kang-woo

as Min Hee-do

as Uncle Wild Goose (voice)

as Killa

as Self

as Kim Young-hun

as 2nd Lt. Pyo Hyun-chul

as Assassin 2

as Kang Woon-do

as Kim Seong-hyeon

as Park jun pil(16 eps)

as Seung-jae

as Lee Byeong-gu

as Kim Jung-woo

as Ryu

as Jung-woo

as Song Jae-min

as Pvt. Jeong Woo-jin

as Bully 1

as Woo-yeol

as Kim Chu-rak