- Prince Adam as Greg Heffley
- Chip as Rowley Jefferson
- Prince Eric (from The Little Mermaid) as Frank Heffley
- Ariel (from The Little Mermaid) as Susan Heffley
- The Beast as Mr. Jefferson
- Mrs. Potts as Mrs. Jefferson
- Cogsworth as Roderick Heffley
- Human Chip as Manny Heffley
- Belle as Holly Hills
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