Adult version of the student who spread rumors about Dae-su.
Investigator handling the kidnapping case in Sympathy for Mr. Vengeance.
Byung-jin provides crucial information about Oh Tae-sik's violent past. He reveals that Jo Pan-soo ordered the attack ten years earlier through a former gang leader and his men, and later warns Tae-sik that Jo will not abandon the matter. His disclosures connect the old crime to the present danger and encourage Tae-sik to confront Jo.
Kang Byung-joo is a police commissioner who founded the psychiatric hospital and placed Jang Hyung-sik in charge. He uses the institution as a front for organ trafficking and disappearances, manipulates Kang Su-a's mother into surrendering her assets, and becomes the target of Kang Su-a's revenge after his crimes are exposed.
A cameo character in the third film, likely a gangster.
Jang-ho is involved through an account that creates a possible gap in the murder timeline. His statement is examined alongside a witness report and other evidence as Kang Dae-man and Noh Tae-soo question whether the apparent alibis were manufactured and whether someone hid in advance before the crime.
A gym teacher in the Relay segment, a minor school figure.
Ji Dae-han has 67 screen credits in a career dating back to 1977. Their work spans 6 cinematic universes — most prominently My Boss, My Collection with 2 titles. Signature works include Oldboy, Hauchi, Father-in-law and Son-in-law. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.
Universe traveler — spans 6 universes
Related entry on Wikidata (Q12965283), public domain (CC0).
