Jo Dal-hwan

as Swimming instructor

as (segment "God of the Rink")

as Technology and Home Economics Teacher

as Oh Si-in

as Kim Sung-sik (1 episode)

as Lee Seon-gyo (10 episodes)

as Bu Doo-mok / Lee Mi-yeon (12 episodes)

as No Jeong-seop

as Han Gwang-seong

as Ku Jo-gab (16 episodes)

as Lee Woo-hyuk (12 episodes)

as Jo Dal-ho (7 episodes)

as Oh Dong-min

as Choi Dae-chi (16 episodes)

as Min-su

as Il-woo

as Yoo Jae-sang

as Kim Ah-ram

as Self (2 episodes)

as Lee Ho-yeon

as Nam Won-Ki (32 episodes)

as Bae Nam-soo (1 episode), as Bae Nam-Soo (7 episodes)

as Chief Yoon (segment "The Designated Driver")

as Detective (voice)

as Monk Dae-gil