Cast[]
- Luke as Arlo
- Junior as Spot
- Chief Bogo as Cliff
- Benjamin Clawhauser as Forrest
- Mayor Lionheart as Poppa
- Grammy Norma (from Dr. Seuss' The Lorax) as Momma
- Snowball as Buck
- Mr. O'Hare (from Dr. Seuss' The Lorax) as Butch
- Tommy and Timmy (from Arthur) as Nash and Remsey
- Professor Z (from Cars 2) as Buddha
- Chloe as Libby
- Kevin as Thunderclap
- Baymax (from Big Hero 6) as Will
- Luigi (from Cars) as Jack
- Grem (from Cars 2) as Earl
- Acer (from Cars 2) as Pervis
- Yubaba (from The Spirit Away) as Lurleane