Jinu from KPop Demon Hunters is a demon who is over 400 years old in terms of actual lifespan, but his physical appearance is that of a 23‑year‑old.

Quick Scoop: Jinu’s Age

  • In the movie’s lore, Jinu is 400+ years old , since he originally lived centuries ago (around the Joseon/Edo period) before becoming a demon and stopping aging.
  • The official character info clarifies that he is physically 23 years old , which is how old he looks in the story.
  • So when fans ask “how old is Jinu from KPop Demon Hunters?”, the fun answer is: over 400, but looks 23.

In fandom discussions, people often highlight this contrast as part of his “ageless idol demon” appeal, since he has centuries of baggage but the face of a young K‑pop star.

TL;DR: Jinu is canonically more than 400 years old as a demon, but his body is that of a 23‑year‑old idol.

Information gathered from public forums or data available on the internet and portrayed here.