Alan C. Lim as Cory Carson

Maisie Benson as Chrissy Carson

Kerry Gudjohnsen as Mama Carson

Paul Killam as Papa Carson

Terrance Smith as DJ Train Trax

Omari Weaver as Loose Caboose

Ella Joy Ballesteros as Frannie Fenderson

Smith Foreman as Freddie Firetruck

Stanley Moore as Janitor

Tyler Hendrix as Phil The Accountant

Ann Kendrick as Dr. Ethyl Wiperglass

Neena-Sinaii Simpo as Kimmy O'Tool

Eli Morse as Timmy O'Tool

Kim Donovan as Mrs. O'Tool / Sheryl Steamroller

Nathaniel Andalis as Mr. O'Tool

Paden Andrews as Clutch Bro #1/ Clutch Bro #2

Bob Barnes as Mr. Coaltrain

Alex Woo as Mr. Coaltrain's Caboose

Adelaide Hirasaki as Halle Copter

Jim Capobianco as Gary Garbage

John Crosthwaite as Cheif

Anna Chambers as Carolyn Firetruck

Jimmy Olea as Carlos

Lina Del Roble as Carmina

Henry Ward as Fan Boy

Jaima Lee as Eileen Ice Cream Truck

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