Brianne Siddall

as Thunder / Dylan (voice)

Robin Atkin Downes

as Carlo / Jack (voice)

Cinda Adams

as Nurse Baxter (voice)

Sage Sommer

as Izzy (voice)

Shanelle Gray

as Maggie (voice)

Doug Stone

as Mr. Lawrence (voice)

Grant George

as Daniel (voice)

Joey Camen

as Chihuahua (voice)

Elisa Gabrielli

as Carla (voice)

Kyle Hebert

as Mark Matthews (voice)

Ella Rouhier

as Hospital children (voice)

Noah Ray Strauss

as Hospital children (voice)

Isabella Tatone

as Hospital children (voice)

Keegan Thomas

as Hospital children (voice)

Joe Ochman

as Mr. Eames (voice)

Lani Minella

as Old Lady (voice)

Grey DeLisle

as Mrs. Eames (voice) (as Mille Mup)

Jim Ward

as Reggie Willis (voice) (as Joseph W. Terry)

Susanne Blakeslee

as Audrey (voice) (as Nina Grillo)

Roxanne Reese

as Lasondra (voice) (as Kendra Leif)

Bill Parks

as Mike Matthews (voice)