Who plays Cheon Sang-u in The Good Detective?

Cheon Sang-u is played by Choi Dae-hoon.

How is Cheon Sang-u connected to other characters?

Cheon Sang-u has 4 mapped relationships in The Good Detective. Explore the interactive relationship map for details.

Cheon Sang-u — Manipulative Partners — Cheon Na-na (Kim Hyo-jin)
A tense, manipulative alliance where Na-na exploits Sang-u's investigative drive while he monitors her intentions.
Cheon Sang-u — Competing Investigators — Choi Yong-geun (Park Won-sang)
Parallel investigative efforts that occasionally intersect, marked by professional rivalry and differing methods within the same case.
Cheon Sang-u — Opposing Authorities — Jang Ki-jin (Lee Jung-ok)
Professional antagonism where Ki-jin’s legal actions directly threaten Sang-u’s investigative work.
Cheon Sang-u — Case Colleagues — Woo Tae-ho (Jung Moon-sung)
Shared professional focus on the TJ Group case and related investigations.