 Arden ChoRumi (voice) | Rumi (voice) |
 May HongMira (voice) | Mira (voice) |
 Ji-young YooZoey (voice) | Zoey (voice) |
 Ahn Hyo-seopJinu (voice) | Jinu (voice) |
 Yunjin KimCeline (voice) | Celine (voice) |
 Ken JeongBobby (voice) | Bobby (voice) |
 Lee Byung-hunGwi-Ma (voice) | Gwi-Ma (voice) |
 Daniel Dae KimHealer Han / Additional Voices (voice) | Healer Han / Additional Voices (voice) |
 Joel Kim BoosterVariety Show Host 1 / Idol Host / Romance Saja (voice) | Variety Show Host 1 / Idol Host / Romance Saja (voice) |
 Liza KoshyHost (voice) | Host (voice) |
| AAlan LeePilot Demon / Variety Show Host 2 / Mystery Saja (voice) | Pilot Demon / Variety Show Host 2 / Mystery Saja (voice) |
| RRumi OakYoung Rumi / Young Fan (voice) | Young Rumi / Young Fan (voice) |
 SungWon ChoAbs Saja / Bathhouse Patron / Social Media Fan (voice) | Abs Saja / Bathhouse Patron / Social Media Fan (voice) |
 Maggie KangFlight Attendant Demon / Crying Demon / Newscaster (voice) | Flight Attendant Demon / Crying Demon / Newscaster (voice) |
 Nathan SchaufTattoo Fan / Security Guard(voice) | Tattoo Fan / Security Guard(voice) |
| CCharlene RamosFan Girl (voice) | Fan Girl (voice) |
| KKira TamagawaFan Girl (voice) | Fan Girl (voice) |
 EJAERumi (Original Songs Performance) (voice) | Rumi (Original Songs Performance) (voice) |
 Audrey NunaMira (Original Songs Performance) (voice) | Mira (Original Songs Performance) (voice) |
 REI AMIZoey (Original Songs Performance) (voice) | Zoey (Original Songs Performance) (voice) |
 Andrew ChoiJinu (Original Songs Performance) (voice) | Jinu (Original Songs Performance) (voice) |
 Danny ChungBaby Saja (Original Songs Performance) (voice) | Baby Saja (Original Songs Performance) (voice) |
 Kevin WooMystery Saja (Original Songs Performance) (voice) | Mystery Saja (Original Songs Performance) (voice) |
 samUIL LeeRomance Saja (Original Songs Performance) (voice) | Romance Saja (Original Songs Performance) (voice) |
 NeckwavAbs Saja (Original Songs Performance) (voice) | Abs Saja (Original Songs Performance) (voice) |
 Lea SalongaCeline (Original Songs Performance) (voice) | Celine (Original Songs Performance) (voice) |
| CCori BaikAdditional Voices (voice) | Additional Voices (voice) |
 Jennifer Sun BellAdditional Voices (voice) | Additional Voices (voice) |
 John Eric BentleyAdditional Voices (voice) | Additional Voices (voice) |
 Ranjani BrowAdditional Voices (voice) | Additional Voices (voice) |
