Alex Greenwald
— Rex (voice)
Chris M. Allport
— Edsel the Dinosaur (voice)
Eileen Brennan
— Rose (voice)
Christine Cavanaugh
— Knock / Ping (voice)
Josh Keaton
— Tucker (voice)
Raymond McLeod
— Sanitation Engineer Dinosaur / Department Store PA (voice)
Elisabeth Moss
— Turbo (voice)
Megan Pryor
— Ethel (voice)
Susan Blu
— Ping (voice)