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Backdoor poster

Backdoor Cast & Characters

Backdoor (2026) stars Jang In-kyu as Kwon Do-yoon, Gu Do-hyung as Seo Ji-hyuk and Jung Jae-bin as Seo Young-woo. The drama series premiered on Sukfilm in 2026. Below is the full cast.

Returning Series 2026 90 Audience
TV Trailers
TV Trailers
Starring Cast
J
Jang In-kyu
Kwon Do-yoon
G
Gu Do-hyung
Seo Ji-hyuk
J
Jung Jae-bin
Seo Young-woo
M
Mun Seok-ho
Audit Team Manager
B
Baek Kang-yoon
Secretary Kim
J
Ji Seung-jin
Male Employee

Full cast

7 cast members
Jang In-kyu
Kwon Do-yoon
Gu Do-hyung
Seo Ji-hyuk
Jung Jae-bin
Seo Young-woo
Mun Seok-ho
Audit Team Manager
Baek Kang-yoon
Secretary Kim
Ji Seung-jin
Male Employee
Kim Ji-hyun
Female Employee