Lee Jin-uk

as Arman Choi

as Kim Dong-wook (1 episode)

as Gu Seung-hyuk (1 episode)

as Lee Ji-hoon

as Yoon Suk-hoon (12 episodes)

as Self (1 episode)

as Father Paolo

as Self

as Jeong Hyun-oh (12 episodes)

as Self (1 episode)

as Self (2 episodes)

as Park In-wook (5 episodes)

as Self (1 episode)

as Seo Joon-hyeong (12 episodes)

as Jin-ho

as Dan Hwal / Bulgasal (16 episodes)

as Park Gyeong-seok / Player 246 (13 episodes)

as Self (5 episodes)

as Pyeon Sang-wook (26 episodes)

as Shin Ji-ho

as Gyeong-yu

as Self (1 episode)

as Dokgo Young (34 episodes)

as Do Kang-woo (28 episodes)