Mariah Carey
Older Mariah (voice)
Acting
Breanna Yde
Mariah (voice)
Acting
Henry Winkler
Grandpa Bill (voice)
Acting
Laya DeLeon Hayes
Vicky (voice)
Acting
Montse Hernandez
Grace (voice)
Acting
Issac Ryan Brown
Brett (voice)
Acting
Bria Danielle Singleton
Beth (voice)
Acting
Phil Morris
Bud (voice)
Acting
Lacey Chabert
Penelope (voice)
Acting
Charlie Adler
Santa / Mr. Ingersoll / Dougie’s Dad (voice)
Acting
Rachel Eggleston
Holly (voice)
Acting
Julian Zane
Ernesto (voice)
Acting
Karim Saleh
Mr. Tyabji (voice)
Acting
Connie Jackson
Grandma Lucy (voice)
Acting
Keiko Agena
Emiko (voice)
Acting
Dee Bradley Baker
Jack (voice)
Acting
Ali Eagle
Mrs. Alexander (voice)
Acting
Michelle Bonilla
Principal Reyes (voice)
Acting
Monroe Cannon
Michelle (voice)
Acting
Moroccan Cannon
Dougie (voice)
Acting