Arden Cho as Rumi (voice)

May Hong as Mira (voice)

Ji-young Yoo as Zoey (voice)

Ahn Hyo-seop as Jinu (voice)

Yunjin Kim as Celine (voice)

Ken Jeong as Bobby (voice)

Lee Byung-hun as Gwi-Ma (voice)

Daniel Dae Kim as Healer Han / Additional Voices (voice)

Joel Kim Booster as Variety Show Host 1 / Idol Host / Romance Saja (voice)

Liza Koshy as Host (voice)

Alan Lee as Pilot Demon / Variety Show Host 2 / Mystery Saja (voice)

Rumi Oak as Young Rumi / Young Fan (voice)

SungWon Cho as Abs Saja / Bathhouse Patron / Social Media Fan (voice)

Maggie Kang as Flight Attendant Demon / Crying Demon / Newscaster (voice)

Nathan Schauf as Tattoo Fan / Security Guard(voice)

Charlene Ramos as Fan Girl (voice)

Kira Tamagawa as Fan Girl (voice)

EJAE as Rumi (Original Songs Performance) (voice)

Audrey Nuna as Mira (Original Songs Performance) (voice)

Rei Ami as Zoey (Original Songs Performance) (voice)

Andrew Choi as Jinu (Original Songs Performance) (voice)

Danny Chung as Baby Saja (Original Songs Performance) (voice)

Kevin Woo as Mystery Saja (Original Songs Performance) (voice)

samUIL Lee as Romance Saja (Original Songs Performance) (voice)

Neckwav as Abs Saja (Original Songs Performance) (voice)

Lea Salonga as Celine (Original Songs Performance) (voice)

Cori Baik as Additional Voices (voice)

Jennifer Sun Bell as Additional Voices (voice)

John Eric Bentley as Additional Voices (voice)

Ranjani Brow as Additional Voices (voice)

Esther K. Chae as Additional Voices (voice)

Claudia Choi as Additional Voices (voice)

Alexandra Bokyun Chun as Additional Voices (voice)

Eddie Frierson as Additional Voices (voice)

Jonathon Ha as Additional Voices (voice)

Josh Han as Additional Voices (voice)

Jason Her as Additional Voices (voice)

Chase Kim as Additional Voices (voice)

Monique Kim as Additional Voices (voice)

Yong Kim as Additional Voices (voice)

James Kyson as Additional Voices (voice)

Ashley Lambert as Additional Voices (voice)

Judy Alice Lee as Additional Voices (voice)

Josiah D. Lee as Additional Voices (voice)

Megan Lee as Additional Voices (voice)

Piotr Michael as Additional Voices (voice)

Andrew Morgado as Additional Voices (voice)

Clarissa Park as Additional Voices (voice)

Cathy Shim as Additional Voices (voice)

Yong Yea as Additional Voices (voice)

Eugene Young as Additional Voices (voice)

Johnny Young as Additional Voices (voice)

CHAEYOUNG as Self (uncredited)

JEONGYEON as Self (uncredited)

JIHYO as Self (uncredited)