Shin Seo-woo

as Little Taehee

as Kim Se Hyeon (1 episode)

as Kim San-ha (Child) (16 episodes)

as Kim Ye Jun [Hui Won's son] (12 episodes)

as Henry Bunuel [Jin Ha's son] (16 episodes)

as Young Kang Woo-jin (2 episodes)

as Ji Ung (1 episode)

as Prince Hyo Ryeong / Yi Bo [Child] (32 episodes)

as Han Seon U [Jae Hui's son] (16 episodes)

as Bae Yun Gi [Young] (1 episode)

as Lee Geon Uk / Kim Geon Uk [Young] (100 episodes)

as Yoo Il Ju [Bongo team]

as Seo U (2 episodes)

as [Apartment boy] (1 episode)

as Arok (12 episodes)