• Grey Heffley as Mike
  • Mr. Jefferson as Sulley
  • Miles (from Alvin and the Chipmunks: The Road Chip) as Randall
  • Peter Griffin (from Family Guy) as Art
  • Rodrick Heffley as Don Carlton
  • Rowley Jefferson as Squishy
  • RJ and Verne (from Over the Hedge) as Terri Perry and Terry Perry
  • Patty Farrel as Dean Hardscrabble
  • Ned Flanders (from The Simpsons) as Professor Knight
  • Lois Griffin (from Family Guy) as Clarrie Wheeler
  • Frank Heffley as Brock Pearson
  • Holly Hills as Ms. Squibbles
  • Mr. Gerabit as Johnny Worthington lll
  • Ashley (from Alvin and the Chipmunks: The Road Chip) as Carrie Willams
  • Chirag Gupta as Frank McCay

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