Pemeran SKY Castle

Yeom Jung Ah

as Han Seo Jin / Kwak Mi Hyang

Pemeran Utama

Lee Tae Ran

as Lee Soo Im

Pemeran Utama

Yoon Se Ah (윤세아)

as Noh Seung Hye

Pemeran Utama

Oh Na Ra

as Jin Jin Hee

Pemeran Utama

Kim Seo Hyung

as Kim Joo Young

Pemeran Utama

Jung Joon Ho

as Kang Joon Sang [Orthopedics professor]

Pemeran Pembantu

Choi Won Young (최원영)

as Hwang Chi Young [Neurosurgery professor]

Pemeran Pembantu

Kim Byung Chul (김병철)

as Cha Min Hyeok [Law professor]

Pemeran Pembantu

Jo Jae Yun (조재윤)

as Woo Yang U [Orthopedics professor]

Pemeran Pembantu

Kim Hye Yoon (김혜윤)

as Kang Ye Seo

Pemeran Pembantu

Lee Ji Won

as Kang Ye Bin

Pemeran Pembantu

Chani

as Hwang Woo Joo

Pemeran Pembantu

Kim Dong Hee (김동희)

as Cha Seo Jun [1st twin]

Pemeran Pembantu

Cho Byeong Kyu (조병규)

as Cha Ki Jun [2nd twin]

Pemeran Pembantu

Park You Na

as Cha Se Ri

Pemeran Pembantu

Lee Yoo Jin

as Woo Soo Han

Pemeran Pembantu

Kim Bo Ra

as Kim Hye Na

Pemeran Pembantu

Lee Hyun Jin

as Teacher Jo Tae Joon

Pemeran Pembantu

Jung Ae Ri

as Madam Yun

Pemeran Pembantu

Song Min Hyung

as Director Choi [University hospital]

Pemeran Pembantu

Kim Jung Nan

as Lee Myeong Ju

Pemeran Pembantu

Song Geon Hee

as Park Yeong Jae

Pemeran Pembantu

Yoo Sung Joo

as Park Soo Chang

Pemeran Pembantu

Kwon Hwa Woon

as Lee Choong Sun [Orthopedic resident]

Pemeran Pembantu

Lee Seung Yeon

as Lawyer Hong [Woo Joo’s counsel]

Pemeran Pembantu

Yoo Yeon

as Laura Jung

Pemeran Pembantu

Lee Tae Goo

as Lee Tae Woo [Neurosurgery resident]

Pemeran Pembantu

Lee Chang Hoon

as Choi Dong Seok [Detective]

Pemeran Pembantu

Lee Joo Ahn

as Lee Dong Min [Orthopedic resident]

Pemeran Pembantu

Moon Dong Hyeok

as Moon Dong Hyuk [Orthopedic resident]

Pemeran Pembantu

Woo Ji Hyun

as Jeon Jin Man [Neurosurgery resident]

Pemeran Pembantu

Jang Sung Yoon

as Han Seo Jin [Young]

Pemeran Pembantu

Han Sa Myung

as Park In Kyu [SKY Castle security]

Pemeran Pembantu

Shim Hoon Gi

as Department head Im

Pemeran Pembantu

Lee Yoon Jae

as [Moderator] (Ep. 1)

Bintang Tamu

Ok Joo Ri

as [Fish marketer] (Ep. 1)

Bintang Tamu

Lee Chae Kyung

as [Tutor auction mother] (Ep. 1)

Bintang Tamu

Lee Ju Yeon

as Lee Ga Eul [Employee] (Ep. 2)

Bintang Tamu

Im Do Hwa

as [Herself] (Ep. 3-4)

Bintang Tamu

Woo Jeong Won

as Dr. Min Ja Yeong (Ep. 20)

Bintang Tamu

Kim Seung Hoon

as [New teacher] (Ep. 20)

Bintang Tamu

Sung Yeo Jin

as Kang Young Sook

Bintang Tamu

Jo Mi Nyeo

as Katherine / "Kay"

Bintang Tamu

Jang Hee Won

as Lee Soo Im [Young]

Bintang Tamu

Kang Moon Kyung

as Kim Hyeok Jae [Assemblyman]

Bintang Tamu

Richard Kim

as [Pastor]

Bintang Tamu

Kang Shin Chul

as [Patient]

Bintang Tamu

Song Min Gyo

as [Announcer]

Bintang Tamu

Jang Yoo Hwa

as [English instructor]

Bintang Tamu

Shin Chul Jin

as [Soo Chang’s cabin elder]

Bintang Tamu

Heo Yeong Son

as [Intern]

Bintang Tamu

Oh Jae Ho

Cinematography

Jo Hyun Tack

Sutradara

Kim Tae Seong

Music Editor

Yoo Hyun Mi

Screenwriter