Reze’s exact age is never officially stated in Chainsaw Man, so her age is unknown in canon.

What Is Known In Canon

  • Official profiles and major databases list her age simply as “Unknown,” with no birthday or year given.
  • She was originally human and later became a Bomb Devil hybrid, and hybrids in the series are implied to stop aging once they reach their physical prime.

Common Fan Estimates

  • Several analyses and fan discussions place her in her late teens to around 20 , largely because she appears close to Denji’s age but slightly more mature.
  • Forum threads and social posts often speculate she is roughly 18–20, while some argue she might be early 20s due to her experience as a trained spy/assassin.

Simple Answer

  • Canon answer: her age is not confirmed.
  • Popular headcanon: somewhere around 18–early 20s , but this is speculation, not an official fact.

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