Pemeran Dear X

Kim You Jung (김유정)

as Baek A Jin

Pemeran Utama

Kim Young Dae (김영대)

as Yun Jun Seo

Pemeran Utama

Kim Do Hoon (김도훈)

as Kim Jae O

Pemeran Utama

Lee Yeol Eum (이열음)

as Im Re Na

Pemeran Utama

Kim Yi Kyeong

as Sim Seung Hui [A Jin’s rival]

Pemeran Pembantu

Kim Ji Young

as Seo Mi Ri [Longstar Entertainment CEO]

Pemeran Pembantu

Shin Moon Sung

as Park Dae Ho [Detective on Nojeong-dong case]

Pemeran Pembantu

Bae Jin Ah

as Mrs. Kwak [Homeroom teacher] (Ep. 1)

Bintang Tamu

Jung Jong Hoon

as [Principal] (Ep. 1)

Bintang Tamu

Yoon Joo

as [Class 2-4 teacher] (Ep. 1)

Bintang Tamu

Gi So Yoo

as Baek A Jin [Child] (Ep. 1-2)

Bintang Tamu

Kang Ian

as [Art teacher] (Ep. 1-2)

Bintang Tamu

Park Hoo

as Yun Jun Seo [Child] (Ep. 2)

Bintang Tamu

Jung Eun Ran

as [Housekeeper] (Ep. 2)

Bintang Tamu

Im Yu Ran

as [Convenience store owner] (Ep. 2)

Bintang Tamu

Kim Ji Hoon

as Choi Jeong Ho [Xanadu Coffee owner] (Ep. 2-4, 7-8)

Bintang Tamu

Jeon Gook Hwan

as [Jun Seo’s grandfather] (Ep. 2-3, 5)

Bintang Tamu

Kim Sang Il

as Im Seung Yong [PB Agency CEO] (Ep. 3)

Bintang Tamu

Lee Seung Jin

as [Detective] (Ep. 3)

Bintang Tamu

Baek Sun Ho (백선호)

as [Xanadu Coffee customer] (Ep. 3)

Bintang Tamu

Hong Min Gi

as [Xanadu Coffee customer] (Ep. 3)

Bintang Tamu

Cha U Yeong

as Ham Yeong Su [Police] (Ep. 4)

Bintang Tamu

Kim Se Yun

as [Detective] (Ep. 4)

Bintang Tamu

Kim Jae Il

as [Internal affairs officer] (Ep. 4)

Bintang Tamu

Seo Hye Jin

as [Publisher company staff] (Ep. 5)

Bintang Tamu

Hwang In Youp (황인엽)

as Heo In Gang [Idol-turned-actor] (Ep. 5-8)

Bintang Tamu

Jung Woo

as Director Seol (Ep. 8)

Bintang Tamu

Park Seong Kyun

as [News editor] (Ep. 8)

Bintang Tamu

Kim Min Song

as [Man with X tattoo] (Ep. 8)

Bintang Tamu

Hong Jong Hyun (홍종현)

as Moon Do Hyeok [A Jin’s fiancé] (Ep. 8-12)

Bintang Tamu

Choi Ji Yeon

as [Reporter] (Ep. 9)

Bintang Tamu

Oh Jae Se

as [Detective in Longstar office] (Ep. 9)

Bintang Tamu

Park Boo Gun

as Director Park (Ep. 10-11)

Bintang Tamu

Park In Chun

as [Landlord actress] (Ep. 11)

Bintang Tamu

Park Sang Hwi

as Han Ji Gyu [PD] (Ep. 11)

Bintang Tamu

Han Hae Sol

as [Department store employee] (Ep. 11)

Bintang Tamu

Kim Nam Hee

as Han Ji Gyu [Documentary producer/host] (Ep. 11-12)

Bintang Tamu

Park Jun Seo

as [Red carpet man]

Bintang Tamu

Kim Jung Hwan

as [Broadcasting station director] (Ep. 12)

Bintang Tamu

Lee Eung Bok

Sutradara

Park So Hyun

Sutradara

Vanziun

Original Creator

Choi Ja Won

Screenwriter

Cho Mi Yeon

as [Host] (Ep. 6)

Cameo