Cast
- SpongeBob SquarePants - Kristen Bell
- Patrick Star - Josh Gad
- Squidward Tentacles - Idina Menzel
- Sandy Cheeks - Dianna Agron
- Mr. Eugene H. Krabs - Gordon (Thomas and Friends)
- Gary - Abby Cadabby (Sesame Street)
- Plankton - Selena Gomez
- Larry the Lobster - Henry (Thomas and Friends)
- Mrs. Puff - Mandy Moore
- Pearl Krabs - Lili Rochefort (Tekken)
- Lou -
- Scooter -
- Sadie - Alexandra Daddario
- Sandals - Christie Monteiro (Tekken)
- Thaddeus -
- Tom - Mary Poppins
- Cara - Amanda Seyfried
- Evelyn -
- Others - various characters from Disney, DuckTales, TaleSpin, Looney Tunes, Percy Jackson, Mamma Mia!, South Park, Peanuts, VeggieTales, etc.
Live-action party goers
- Patchy the Pirate - SpongeBob SquarePants
- Potty the Parrot - Gary (SpongeBob SquarePants)
- Minnie Mermaid - Mindy (SpongeBob SquarePants)
Characters
Kristen Bell as SpongeBob
Josh Gad as Patrick
Idina Menzel as Squidward
Dianna Agron as Sandy
Gordon as Mr. Krabs
Abby Cadabby as Gary
Henry as Larry
Lili as Pearl
Mary Poppins as Tom
