Gang leader who clashes with Dae-su.
Detective #1 is one of the investigators examining the disappearances of Gu Bum-mo and Ko Si-jo. The detectives connect the missing men through their papermaking backgrounds and question Yoo Man-su about them. Their eventual acceptance of a false explanation, supported by Lee A-ra's statement, removes suspicion from Yoo Man-su.
A wise old relationship expert who mentors Bang-ja, providing him with the seduction techniques and classical texts needed to win Chun-hyang.
Amphibious creature emerging from the Han River, driven by mutated instincts.
Legal official investigating the military cover-up.
Associate aiding Geum-ja's revenge.
Do-cheol's loyal team leader who protects him from internal affairs and assassins.
Loyal crew member and strategist for the pirate fleet
The rescue chief who prioritizes the victim's life over media sensationalism. He uses clues from the tunnel to plan excavations, faces operational setbacks due to faulty schematics, and risks his own life in a desperate final attempt to reach Jung-soo.
A member of the Chinese team responsible for disabling security and holding guards at gunpoint. He is arrested but manages to escape a sinking police van. He later regroups with the crew but is abandoned by Popie during the final escape.
Key police officer assisting Seo Do-cheol in the Violent Crimes Investigation Unit.
Supporting character in the sequel, part of the next generation navigating modern life.
Oh Dal-su has 72 screen credits in a career dating back to 2002. Their work spans 10 cinematic universes — most prominently Detective K Collection with 3 titles. Signature works include Oldboy, A Tale of Legendary Libido, The Servant. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.
Universe traveler — spans 10 universes
Related entry on Wikidata (Q483575), public domain (CC0).
