Pemeran Big

Gong Yoo (공유)

as Seo Yoon Jae / Kang Kyung Joon

Pemeran Utama

Lee Min Jung

as Gil Da Ran

Pemeran Utama

Shin Won Ho

as Kang Kyung Joon

Pemeran Utama

Bae Suzy (배수지)

as Jang Ma Ri

Pemeran Utama

Shin Ji Soo

as Lee Ae Kyung

Pemeran Pembantu

Yoon Hae Young

as Lee Jung Hye

Pemeran Pembantu

Moon Ji Yoon

as Na Hyo Sang

Pemeran Pembantu

Choi Ran

as Kim Young Ok

Pemeran Pembantu

Im Ji Eun

as Kang Hui Su

Pemeran Pembantu

Jo Yeong Jin

as Seo In Wook

Pemeran Pembantu

Kim Seo Ra

as Ahn Hye Jung

Pemeran Pembantu

Go Soo Hee

as Lee Kyung Mi

Pemeran Pembantu

Jang Hyun Sung

as Kang Hyuk Soo

Pemeran Pembantu

Ahn Suk Hwan (안석환)

as Gil Min Gyu

Pemeran Pembantu

Baek Sung Hyun

as Gil Chung Sik

Pemeran Pembantu

Jang Hee Jin (장희진)

as Lee Se Yeong

Pemeran Pembantu

Hwang Se Jung

as [Class monitor]

Pemeran Pembantu

Choi Dae Hoon (최대훈)

as [Yoon Jae's colleague] (Ep. 1, 3, 9)

Bintang Tamu

Yoon Joo Sang

as Park Min Gyu [Professor] (Ep. 10)

Bintang Tamu

Choi Ro Woon

as Gom Dol Yi

Bintang Tamu

Jung Soo Young

as [Shaman] (Ep. 7-8)

Bintang Tamu

Park Sung Hoon (박성훈)

as [Chung Sik's classmate]

Bintang Tamu

Lee Hee Jin

Bintang Tamu

Gong Jae Won

Bintang Tamu

Ji Byung Hyun

Sutradara

Kim Seong Yoon

Sutradara

Mo Wan Il

Producer

Hong Jeong Eun

Screenwriter

Hong Mi Ran

Screenwriter