Pemeran Shut Up: Flower Boy Band

Sung Jun (성준)

as Kwon Ji Hyeok

Pemeran Utama

Jo Bo Ah (조보아)

as Im Su A

Pemeran Utama

L (엘)

as Lee Hyeon Su

Pemeran Utama

Lee Hyun Jae

as Jang Do Il

Pemeran Utama

Kim Min Seok (김민석)

as Seo Gyeong Jong

Pemeran Utama

Yoo Min Kyu

as Kim Ha Jin

Pemeran Utama

Jung Eui Chul

as Yoo Seung Hun ['Strawberry Fields' member]

Pemeran Pembantu

Ma Dong Seok (마동석)

as Kim Su Bok / "Silba" [Teacher]

Pemeran Pembantu

Kim In Seo

as Yoo Hae Ri [Seung Hun's sister]

Pemeran Pembantu

Kim Hyun Jun

as Park Pyo Ju ['Strawberry Fields' member]

Pemeran Pembantu

Kwak Jung Wook

as Jung Ma Ro ['Strawberry Fields' member]

Pemeran Pembantu

Kim Jung Min

as Bang U Gyeong ['Eye Candy' fan]

Pemeran Pembantu

Lim Kim

as Kim Ye Rim [Singer]

Pemeran Pembantu

Jung Ji Ahn

as Cho Deo Mi [Su A's best friend]

Pemeran Pembantu

Lee Min Ki (이민기)

as Ju Byeong Hui (Ep. 1-3)

Bintang Tamu

Woo Do Hwan (우도환)

as [Dong Nae High School student] (Ep. 1, 7, 12, 15)

Bintang Tamu

Lee Kan Hee

as [Do Il's mother] (Ep. 2)

Bintang Tamu

B-Bomb

as [Presenter] (Ep. 10-11)

Bintang Tamu

Kim C

as "Rock Kim" [Silba's friend]

Bintang Tamu

Gu Bon Im

as [Gyeong Jong's mother]

Bintang Tamu

Ryu Sung Hoon

as [Do Il's big guy]

Bintang Tamu

Son Sang Hyeon

as [Do Il's Heungchi]

Bintang Tamu

Yeom Jung Ah

as [Ji Hyeok's mother]

Bintang Tamu

Dong Hyun Bae

as ['Shark' gang boss]

Bintang Tamu

Yoo Joon Hong

as ['Shark' gang member #1]

Bintang Tamu

Park Dae Kyu

as [Reporter]

Bintang Tamu

Kim Hyo Seok

as [Drummer]

Bintang Tamu

Kim Ki Seok

as [Club manager]

Bintang Tamu

Lee Jae Hak

Bintang Tamu

Nam Tae Boo

Bintang Tamu

Kim Yoo Han

Bintang Tamu

Lee Kwon

Sutradara