The singers in Kpop Demon Hunters are primarily the voices behind the fictional K-pop girl group Huntr/x and the boy group Saja Boys. For the girl group Huntr/x:
- Rumi's singing voice is provided by Ejae (Kim Eun Jae), a Korean American singer-songwriter.
- Mira's singing voice is voiced by Audrey Nuna, a Korean American singer and rapper.
- Zoey's singing voice is provided by Rei Ami, a Korean-born singer.
For the boy group Saja Boys:
- Jinu's singing voice is performed by Andrew Choi.
- Other members' singing voices include Neckwav, Danny Chung, Kevin Woo, and SamUIL Lee.
The spoken voices for Huntr/x members are different from their singing voices:
- Arden Cho voices Rumi (lead vocalist/leader).
- May Hong voices Mira (visual/main dancer).
- Ji-young Yoo voices Zoey (main rapper/lyricist).
These singers brought the music of the movie to life and have performed songs like the hit "Golden" which topped charts globally. The soundtrack features real vocal performances by these artists that have become popular alongside the animated film.