Pemeran Never Give Up

Yoon Doo Joon (윤두준)

as Jung Seok

Pemeran Utama

Kwak Do Won

as Goo Pil Soo

Pemeran Utama

Han Go Eun

as Nam Seong Mi

Pemeran Utama

Park Won Sook

as Cheon Man Geum / "Mrs. Don"

Pemeran Utama

Jung Dong Won

as Koo Jun Pyo

Pemeran Utama

Kim Young Woong

as Noh Il Dam

Pemeran Pembantu

Kim Tae Hoon

as Hwang Eun Ho

Pemeran Pembantu

Wang Ji Won

as Cha Yoo Jin

Pemeran Pembantu

Jung Jae Kwang (정재광)

as Min Jae

Pemeran Pembantu

Shin Joo Hyup

as Kim Yong Hyun

Pemeran Pembantu

Park Sung Yun

as Oh Sharon

Pemeran Pembantu

Jung Da Eun

as Oh Seul Ki

Pemeran Pembantu

An Seong Won

as Choi Young Jae

Pemeran Pembantu

Go Seung Bo

as Lee Dong Kyu

Pemeran Pembantu

Kim Min Seo

as Kim Ji Hyeon

Pemeran Pembantu

Kim Ji Hoon

as Jung Seok [Young]

Pemeran Pembantu

Seo Ji Won

as Yeong Il

Pemeran Pembantu

Kim Ji Young

as Jo Anna

Pemeran Pembantu

Hak Jin

as Alex

Pemeran Pembantu

Jung Hae Na

as Lee Chae Eun

Pemeran Pembantu

Kim Hyun Myung

as Choi Hyeon Su

Pemeran Pembantu

J-Black

as Montana

Pemeran Pembantu

Song Ji Ho

as Kim Gun Woo

Pemeran Pembantu

Cha Soon Bae

as [Landlord] (Ep. 1)

Bintang Tamu

Heo Woong

as [Loan shark] (Ep. 1)

Bintang Tamu

Park Gwang Jae

as [Loan shark] (Ep. 1)

Bintang Tamu

Kim Eun Soo

as [Chicken restaurant client] (Ep. 1)

Bintang Tamu

Lee Dong Yong

as [Neighbourhood football team] (Ep. 1)

Bintang Tamu

Kim Tae Yoon

as [Neighbourhood football team] (Ep. 1)

Bintang Tamu

Yang Joon Seok

as (Ep. 1)

Bintang Tamu

Hwang Yun Seon

as [Big Bird Investment CEO's secretary] (Ep. 2)

Bintang Tamu

Lee Young Eun

as Se Ri (Ep. 14)

Bintang Tamu

Kim Si Woo

as Gatcho 1234 (Ep. 14)

Bintang Tamu

Choi Nam Uk

as [Awards committee] (Ep. 14)

Bintang Tamu

Kim Ha Eon

as Lee Se Jung

Bintang Tamu

Ariane Desgagnes-Leclerc

as Jennifer [English teacher]

Bintang Tamu

Kim Chae Hyun

as [Ji Hyun’s mother]

Bintang Tamu

Kwon Hae Hyo

as [Jung Seok's father]

Bintang Tamu

Yeo Woo Rin

as [Lee Dong Gyu’s mother]

Bintang Tamu

Seon Yul U

as [Detective] (Ep. 15)

Bintang Tamu

Nam Da Nu

as Ballee

Bintang Tamu

Yoon Ji Hwan

as [Delivery partner] (Ep. 14-15)

Bintang Tamu

Ko Dong Ok

as Ho Cheol

Bintang Tamu

Park Gang To

as [Developer] (Ep. 3)

Bintang Tamu

Seo Kwang Jae

as John Han (Ep. 7)

Bintang Tamu

Ahn So Young

as [Fortune teller] (ep.6)

Bintang Tamu

Park Ye Rin

as Eun Sil

Bintang Tamu

Kim In Kwon

as Reporter Yun (Ep. 13-14)

Bintang Tamu

Kim A Yul

as [Customer] (Ep. 11)

Bintang Tamu

Choi Kang Soo

as Nam Seong Tae

Bintang Tamu

Kim Do Ah

Bintang Tamu

Choi Do Hoon

Sutradara

Son Geun Joo

Screenwriter

Lee Hae Ri

Screenwriter