Yeon Woo-jin

as Dr. Kang

as Woon-cheol (segment "Metamorphosis")

as Mu-kwang

as Doo-sik

as Chang-seok

as Choi Moo-hyeok

as Yoon Shi-kyung

as Huyga

as Woon-chul

as King Hyojong

as Kim Min-soo

as Dong-jun

as Min-soo (segment "Just Friends?")

as Seungki

as Min-soo

as Baek Tae-Ju • 12 eps

as Kim Do-hyeon • 12 eps

as Kim Tae-hun • 16 eps

as Dong Go-yun • 12 eps

as Kim Sun-woo • 12 eps

as Han Jung Hyun [Young] • 16 eps

as Jo Min-guk • 10 eps

as Jang Yoon • 32 eps

as Oh Soo-Min • 16 eps

as Self • 1 eps

as Sa Ui-Hyun • 32 eps

as Lee Yeok / King Jungjong • 20 eps

as Eun Hwan-Ki • 16 eps

as Self • 1 eps

as So Jung-woo • 18 eps

as Gong Ki-tae • 16 eps

as Jang Hyun Jin • 2 eps

as Lee Han-Kyung • 1 eps

as Lee Jae-hee • 20 eps

as Joo-wal • 20 eps

as Han Jae Kwang • 4 eps

as Hwang Tae-pil • 58 eps

as Bang U-jin • 210 eps

as Dong-soo • 20 eps