as Agent Paul

as Kang Su-ho

as Director Han

as

as Paul Chong Hasang

as Jung Joon-hyeok

as Do-jin

as Kim Sun-woo

as Self

as Ji-ho

as Kang Tae Woo

as Jo Se-Hwang

as Bong-gil

as Baek Kwang-hyun

as Himself

as Park Jin-han

as Oh Jak-Doo

as Kim Joon-Hyuk

as Kim Hyo-chan

as Kim Hyo Chan

as Min Seon-jae

as Investigator

as Prince Yeonsan

as Gil Soo-hyun

as Dong-joon

as Kang Do-Yoon

as Lee Woo-gon

as Tae-kyu

as Baseball Team Director

as Jung-ha's Younger Brother (cameo)

as Yang Choon-dong

as Lee Tae-sung

as Ahn Min-Chul

as Joo Young-jak

as Robot Repairman Park Do-won

as

as Kim Cheol

as Kang Jeong-ho

as Kang Hyun-woo / Jung-ha's Younger Brother

as Chae Do-woo

as Chun-soo

as Kyu-chul

as Shi jun

as Cho Kyung-yoon

as Sung-chan

as Kim Man-soo

as Tak Jun-ha

as Moggy

as Yoon Seong-woo

as Ju-ho

as Min-ho

as Shin Moo-chul

as Private Cho