Yeo Hoi-hyeon

as Chairman Lee (2 episodes)

as Barista (1 episode)

as Woo Dae-sung (24 episodes)

as Jeong Eui-sung (16 episodes)

as Ma-ro

as Park Jae-Hyung (50 episodes)

as Park Eun Ho (4 episodes)

as Self (10 episodes)

as Lee Yu Beom [Young] (2 episodes)

as Ku Gun-hee

as Son Jin (8 episodes)

as Teenage Jang-han

as Crown Prince Soonhwe (20 episodes)

as Lee Seung-ho (16 episodes)

as Gu Geon Hui (1 episode)