Pemeran Dream High

Bae Suzy (배수지)

as Ko Hye Mi

Pemeran Utama

Kim Soo Hyun (김수현)

as Song Sam Dong

Pemeran Utama

Ham Eun Jung

as Yoon Baek Hee

Pemeran Utama

Jang Woo Young

as Jason

Pemeran Utama

IU (이지은)

as Kim Pil Suk

Pemeran Utama

Ok Taec Yeon (옥택연)

as Jin Gook / Hyun Shi Hyuk

Pemeran Utama

Uhm Ki Joon

as Kang Oh Hyuk

Pemeran Pembantu

Lee Yoon Ji

as Shi Kyung Jin

Pemeran Pembantu

Park Jin Young

as Yang Jin Man

Pemeran Pembantu

Han Ji Hoo

as Park Do Joon

Pemeran Pembantu

Jung Min Joo

as Jung Ah Jung

Pemeran Pembantu

Lee Yoon Mi

as Maeng Seung Hee

Pemeran Pembantu

Baek Won Gil

as Gong Min Chul

Pemeran Pembantu

Jeon Ah Min

as Jo In Sung

Pemeran Pembantu

Lee Hye Sook

as Song Nam Boon

Pemeran Pembantu

Kang Yi Suk

as Jin Gook [Young]

Pemeran Pembantu

Han Bo Reum

as Ha So Hyun

Pemeran Pembantu

Park Jin Sang

as Jun Tae San

Pemeran Pembantu

Park Hyuk Kwon

as Go Byung Jik

Pemeran Pembantu

Lee Byung Joon

as Shi Bum Soo

Pemeran Pembantu

Ahn Kil Kang

as Ma Doo Shik

Pemeran Pembantu

Ahn Seo Hyun

as Go Hye Sung

Pemeran Pembantu

Choi Il Hwa

as Hyun Moo Jin

Pemeran Pembantu

Ahn Sun Young

as Kang Oh Sun

Pemeran Pembantu

Yoon Ji Yoo

as Lee Ri A

Pemeran Pembantu

Kim Yoon Tae

as [Ring reporter]

Pemeran Pembantu

Park Won Sang

as Yun Seong Gil [Group K president]

Pemeran Pembantu

Jang Hee Soo

as [Baek Hee's mother]

Pemeran Pembantu

Sumi Jo

as [Herself] (Ep. 1)

Bintang Tamu

Kim Hyun Joong

as [Himself] (Ep. 1)

Bintang Tamu

Bae Yong Joon

as Jung Ha Myung (Ep. 1-4)

Bintang Tamu

Kobayashi Yutaka

as [Singer / part time worker] (Ep. 10)

Bintang Tamu

Lee Teuk

as [Himself] (Ep. 13)

Bintang Tamu

Eunhyuk

as [Himself] (Ep. 13)

Bintang Tamu

Park Eun Bin (박은빈)

as Go Hye Sung (Ep. 16)

Bintang Tamu

Min

as [Flash mob dancer] (Ep. 16)

Bintang Tamu

Jung Jin Woon

as [Flash mob dancer] (Ep. 16)

Bintang Tamu

Jo A Young

as [Baek Hee’s Kirin student] (Ep. 16)

Bintang Tamu

Jun Hyun Moo

as [MC]

Bintang Tamu

Park Jae Woong

as [Big guy]

Bintang Tamu

Meng Jia

as [Flash mob dancer]

Bintang Tamu

Fei

as [Flashmob dancer]

Bintang Tamu

Bae Noo Ri

as [Kirin High student]

Bintang Tamu

Ahn Jae Won

as [Kirin High student]

Bintang Tamu

Joo Young Hoon

as [Composing teacher]

Bintang Tamu

Im Seul Ong

as [Flash mob paramedic]

Bintang Tamu

Choi Jung Nam

as [Wife of the president]

Bintang Tamu

Gu Jun Yeop

as [Host of dance competition]

Bintang Tamu

Baek Da Eun

as [Kirin High student | Dalshabet member]

Bintang Tamu

Kim Young Hee

Bintang Tamu

Young K

Bintang Tamu

Jo Ga Eun

Bintang Tamu

Serri

Bintang Tamu

Bang Joong Hyun

Bintang Tamu

Park Hwi Soon

as [Jin Gook's roommate]

Bintang Tamu

Nichkhun

as [Lee Ri Ah's CF partner]

Bintang Tamu

Hwang Chan Sung

as [Oh Sun's imaginary boy]

Bintang Tamu

Shownu

as [Woo Young's backup dancer]

Bintang Tamu

Lee Eung Bok

Sutradara

Kim Seong Yoon

Sutradara

Park Hye Ryun

Screenwriter