Alan C. Lim as Cory Carson (voice)

Maisie Benson as Chrissy Carson (voice)

Kerry Gudjohnsen as Mama Carson (voice)

Paul Killam as Papa Carson (voice)

Terrance Smith as DJ Train Trax (voice)

Omari Weaver as Loose Caboose (voice)

Ella Joy Ballesteros as Frannie Fenderson (voice)

Smith Foreman as Freddie Firetruck (voice)

Stanley Moore as Janitor (voice)

Tyler Hendrix as Phil The Accountant (voice)

Ann Kendrick as Dr. Ethyl Wiperglass (voice)

Neena-Sinaii Simpo as Kimmy O'Tool (voice)

Eli Morse as Timmy O'Tool (voice)

Kim Donovan as Mrs. O'Tool / Sheryl Steamroller (voice)

Nathaniel Andalis as Mr. O'Tool (voice)

Paden Andrews as Clutch Bro #1 / Clutch Bro #2 (voice)

Bob Barnes as Mr. Coaltrain (voice)

Alex Woo as Mr. Coaltrain's Caboose (voice)

Adelaide Hirasaki as Halle Copter (voice)

Jim Capobianco as Gary Garbage (voice)

John Crosthwaite as Police Chief (voice)

Anna Chambers as Carolyn Firetruck (voice)

Jimmy Olea as Carlos (voice)

Lina Del Roble as Carmina (voice)

Henry Ward as Fan Boy (voice)

Jaima Lee as Eileen Ice Cream Truck (voice)

John Crosthwaite as Additional Voices

Lorelai Hirasaki as Additional Voices

Alec Newton as Additional Voices

Yosiat Gimbernard as Additional Voices

Keith Norton as Additional Voices

Rebecca Stockley as Additional Voices