Leah LewisEmber Lumen (voice)
Mamoudou AthieWade Ripple (voice)
Ronnie del CarmenBernie Lumen (voice)
Shila OmmiCinder Lumen (voice)
Wendi McLendon-CoveyGale (voice)
Catherine O'HaraBrook Ripple (voice)
Mason WertheimerClod (voice)
Ronobir LahiriHarold (voice)
Wilma BonetFlarrietta (voice)
Joe PeraFern Grouchwood (voice)
Matthew Yang KingAlan / Lutz / Earth Pruner (voice)
Clara Lin DingLittle Kid Ember (voice)
Reagan ToBig Kid Ember (voice)
Jeff LapenseeSparkler Customer (voice)
Ben MorrisWood Immigration Official (voice)
Alex KappCustomer / Delivery Person / Earth Landlord (voice)
P.L. BrownDoorman (voice)
Jonathan AdamsFlarry (voice)
Innocent EkakitieMarco and Polo Ripple (voice) (uncredited)