• Heihei as Greg Heffley
  • Pua as Rowley Jefferson
  • RJ (with Verne and Hammy) (from Over the Hedge) as Roderick Heffley
  • Tui as Mr. Jefferson
  • Sina as Mrs. Jefferson
  • Blu (from Rio) as Frank Heffley
  • Jewel (from Rio) as Susan Heffley
  • Flounder (from The Little Mermaid) as Manny Heffley

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