Pemeran Idol I

Choi Soo Young (최수영)

as Maeng Se Na

Pemeran Utama

Kim Jae Yeong

as Do Ra Ik / Laik

Pemeran Utama

Jung Jae Kwang (정재광)

as Kwak Byeong Gyun

Pemeran Utama

Choi Hee Jin

as Hong Hye Ju

Pemeran Utama

Kim Hyun Jin

as Park Chung Jae

Pemeran Utama

Kim Won Hae

as Cheon Gwang Su [Se Na’s boss]

Pemeran Pembantu

Jung Man Sik

as Geum Bo Sang [Goldi Entertainment CEO]

Pemeran Pembantu

Ahn Woo Yeon

as Kang U Seong [Gold Boys leader]

Pemeran Pembantu

Park Jeong Woo

as Choi Jae Hui [Gold Boys drummer]

Pemeran Pembantu

Choi Geon

as Lee Yeong Bin [Gold Boys keyboardist]

Pemeran Pembantu

Kim Min Sang

as Kwak Jong Cheol [Byeong Gyeon's father]

Pemeran Pembantu

Woo Mi Hwa

as Do Mi Gyeong [Ra Ik's mother]

Pemeran Pembantu

Jo Hyun Sik

as Jang Han Gu [Ra Ik's manager]

Pemeran Pembantu

Nam Joong Gyu

as [Manager Jang's assistant]

Pemeran Pembantu

Jo Jae Ryong

as Yoo Nam Sik [Detective team leader]

Pemeran Pembantu

Jo Wan Ki

as Kim Gi Uk [Prosecutor]

Pemeran Pembantu

Oh Gi Gwang

as [Youngest detective]

Pemeran Pembantu

Ha Ju Ae

as [Ra Ik's stalker]

Pemeran Pembantu

Cha Yu Jin

as Kim Min Ji [Ra Ik's doctor] (Ep. 1)

Bintang Tamu

Kim Mi Hwa

as Seo Hyeon Suk [Ra Ik's housekeeper] (Ep. 1)

Bintang Tamu

Park Yong

as [Judge] (Ep. 1)

Bintang Tamu

Ahn Jung Ho

as [Reporter] (Ep. 1)

Bintang Tamu

Choi Yeon Hwa

as [Reporter] (Ep. 1)

Bintang Tamu

Hong Dal Pyo

as [Protestor] (Ep. 1)

Bintang Tamu

Nam Jin Bok

as [Inspector] (Ep. 1)

Bintang Tamu

Ha Seung Yeon

as [Goldi staff] (Ep. 1)

Bintang Tamu

Sung Ryung

as [Ra Ik's stalker] (Ep. 1)

Bintang Tamu

Han Se Jin

as [Music show MC] (Ep. 1)

Bintang Tamu

Lee Seung Hun

as [Chief prosecutor] (Ep. 1)

Bintang Tamu

Park Won Sang

as Maeng Ji Yong [Se Na's father] (Ep. 2)

Bintang Tamu

Lee Yoon Sang

as [Judge] (Ep. 2)

Bintang Tamu

Choi Won

as [Public defender] (Ep. 2)

Bintang Tamu

Kim Hee Sung

as Do Ra Ik [Child] (Ep. 3)

Bintang Tamu

Hwang Dong Ha

as [Police officer] (Ep. 3)

Bintang Tamu

Yang Heung Joo

as [NFS examiner] (Ep. 3)

Bintang Tamu

Park Jeong Seo

as [Mechanic] (Ep. 5)

Bintang Tamu

Kim Jin Seo

as [Police officer] (Ep. 7)

Bintang Tamu

Min Sang Chul

as [Doctor] (Ep. 8)

Bintang Tamu

Lee Ki Sub

as [Prosecutor] (Ep. 8)

Bintang Tamu

Kwon Ban Suk

as [Prosecutor] (Ep. 8)

Bintang Tamu

Shin Min Soo

as [Security guard] (Ep. 8)

Bintang Tamu

Kim Geon Ho

as [Hotel employee] (Ep. 8)

Bintang Tamu

Kim Jong Gu

as [Restaurant owner] (Ep. 9)

Bintang Tamu

Jung Kyu Soo

as [Mountain cabin owner] (Ep. 10)

Bintang Tamu

Seo Kwang Jae

as [Doctor] (Ep. 11)

Bintang Tamu

Shim Yoon Bo

as Reporter Baek

Bintang Tamu

Park Sharon

as Maeng Se Na [Teen]

Bintang Tamu

Jeon Gook Hwan

as Chairman Hong [Hye Ju's father]

Bintang Tamu

Jung Hwan

as Manager Lee [Se Na's colleague]

Bintang Tamu

Kim Jae Il

as [Detective]

Bintang Tamu

Kim Kye Hyung

as [Detective]

Bintang Tamu

Lee Joo Hyung

as [Investigator]

Bintang Tamu

Kwon Chae Won

as [Music show MC]

Bintang Tamu

Kim Shi Heon

as [Gwang Su's lawyer team]

Bintang Tamu

Kwak Dae Hee

as [Arch Entertainment executive]

Bintang Tamu

Han Jun Seo

as Do Ra Ik [Young]

Bintang Tamu

Kim Hye Jun

Bintang Tamu

Lee Gwang Young

Sutradara

Park Se Jun

Music Director

Kim Da Rin

Screenwriter