Zin Tae-hyun

as Self - Mentor

as Kim Nam-Joon

as Do Gwang-Woo

as Self - Guest

as Roman Lee

as Lord Chang Won

as Kim Sang Soo

as Jin Yong-Suk

as Se-hyeon

as Park Doo-ho

as Gyo-ki

as Min Soo

as 南周承

as Kang Hyung-Woo

as Ran's Ex-lover

as Bae Ji-Hoon

as Shi-Hoo

as Yeon-seong

as Kang Se-ki

as Min Tae-hyeon

as Jung-dae

as Young-eun

as Yong Joon [Kyung Min's college friend]

as Joon-ho, Kyung-min's college friend

as Kim Soo-jin

as South Korean Soldier