Bae Yu-ram

Tastefully Yours

Lee Yu-jin

Good Partner

Park Chan Sung

Crash

Jung Ho-kyu (Eps 1, 2)

Black Knight

5-7

Yonder

Hacker Park

Taxi Driver

Park Jin-eon

Zombie Detective

PD

Less than Evil

Ban Ji-deuk

Untouchable

Choi Jae ho [Joon Seo's Seoul PD colleague]

The Emperor: Owner of the Mask

Park Moo Ha

Reply 1988

Mr. Yoo [Assistant manager]

Oh My Ghost

PD [So Hyeong's colleague]

The Producers

Ryoo Il-ryong

Radio Star

Self