Cast
- Owen as Thomas
- Barry as Edward
- Simon Masrani as Henry
- Scott as Gordon
- Zach as James
- Gray as Percy
- Lowery as Toby
- Balto (from Balto) as Duck
- Vivian as Mavis
- Claire as Emily
- Audrey (from The Lorax (2012)) as Rosie
- Vic Hoskins as Devious Diesel
- Delta as Rheneas
- Indominus Rex as Diesel 10
- Mosy The Mosasaurus as Daisy
- Gru and Dr. Nefario (from Despicable Me) as Donald and Douglas
- Ted (from The Lorax (2012)) as Bertie
- Benji Applebaum (from Pitch Perfect) as Oliver
- Carlos (from Hop) as Bulgy
- Dr. Henry Wu as Spencer
- Charlie and Echo as Annie and Clarabel
- Vector (from Despicable Me) as George
- Karen as Belle
- Zara as Madge
- Blue as Lady
- Rexy as Molly
- Fred Flinstone (from The Flintstones Movie) as BoCo
- Wilma (from The Filntstones Movie) as Elizabeth
- Barney Bumble (from The Filntstones Movie) as Derek
- Littlefoot (from The Land Before Time) as Fergus
- Beca Mitchell (from Pitch Perfect) as Flora
- E.B.'s Dad (from Hop) as Murdoch
- Lucy Wilde (from Despicable Me 2) as Henrietta
- Nanny McPhee (from Nanny McPhee) as Caroline