Pemeran Weightlifting Fairy Kim Bok Joo

Lee Sung Kyung (이성경)

as Kim Bok Joo

Pemeran Utama

Nam Joo Hyuk (남주혁)

as Jung Joon Hyeong

Pemeran Utama

Lee Jae Yoon

as Jung Jae Yi

Pemeran Utama

Gyeong Su Jin (경수진)

as Song Shi Ho

Pemeran Utama

Kim Chae Eun

as [Nurse]

Pemeran Pembantu

Kim Ye Jun

as Jung Joon Hyung [Young]

Pemeran Pembantu

Jung Eugene

as [Rhythmic gymnastics team]

Pemeran Pembantu

Jung Hyun Seok

as [Dormitory housemaster]

Pemeran Pembantu

Lee Ji Hoon

as [Swimming team coach]

Pemeran Pembantu

Lee Ye Bin

as Lee Ye Bin

Pemeran Pembantu

Lee Ji Woo

as Kim Bok Joo [Young]

Pemeran Pembantu

Lee Jong Suk (이종석)

as Jong Seok [Chicken Restaurant customer] (Ep. 2)

Bintang Tamu

Kim Ji Soo (김지수)

as [Guy who works with Bok Joo] (Ep. 11)

Bintang Tamu

Lee Jong Hwa

as Choi Tae Hoon (Ep. 1 & 15)

Bintang Tamu

Kim Min Ho

as [Weightlifter] (Ep. 2)

Bintang Tamu

Kim Seul Ki (김슬기)

as Seul Gi [Delivery girl] (Ep. 15)

Bintang Tamu

Lee Su Ji

as Goo Seul (Ep. 1)

Bintang Tamu

Oh Ha Nee

as [Rhythmic gymnast]

Bintang Tamu

Ahn Il Kwon

as [Bar fight combatant] (Ep. 3)

Bintang Tamu

Seo Kwang Jae

as Dean Kim Kyung Min

Bintang Tamu

Tae Won Seok

Bintang Tamu

Yoo Dam Yeon

Bintang Tamu

Lee Ha Eun

as [Group date] (Ep. 9)

Bintang Tamu

Kwon Hyuk Bum

Bintang Tamu

Hwang Dong Hee

as [Athletic club]

Bintang Tamu

Yoo Young Bin

Bintang Tamu

Kim Seo Ha

as [Athletic Team Captain]

Bintang Tamu

Yoon Sung Woo

as [Clever boy]

Bintang Tamu

Kim Su In

as [Young girl doing rhythmic gymnastics]

Bintang Tamu

Shin Ah Young

as [Announcer]

Bintang Tamu

Kim Nam Woo

as Nam Woo

Bintang Tamu

Park Kyu Yeop

Bintang Tamu

Kim Ji Eun

as [Dance senior]

Bintang Tamu

Oh Jin Ha

as [Nurse]

Bintang Tamu

Kim Hyun Jung

as [Dormitory housemother] (Ep. 3)

Bintang Tamu

Han Hee

Chief Producer

Jung Se Rin

Composer

Oh Hyun Jong

Sutradara

Nam Sung Woo

Sutradara

Yang Hee Seung

Screenwriter

Kim Soo Jin

Screenwriter

Ju Seo Eun

Bit part

Lee Soo Hyun

Asisten Sutradara