Cast[]
- Mario as SpongeBob SquarePants
- Yoshi as Patrick Star
- Oogtar as Squidward Tentacles
- Princess Peach as Sandy Cheeks
- Donkey Kong as Mr. Krabs
- Shy Guy as Gary
- Dixie Kong as Pearl
- Pauline as Mrs. Puff
- Ludwig Von Koopa as Plankton
- Wendy O. Koopa as Karen
- Boshi as Flats the Flounder
- Mouser as Tattle-Tale Strangler
- Morton Koopa Jr. as Bubble Bass
- Chunky Kong as Larry the Lobster
- Troff as Mermaid Man
- Scoff as Barnacle Boy
- King Boo as Flying Dutchman
- Toad as Old Man Jenkins
- Wario as Man Ray
- Waluigi as Dirty Bubble
- Blue Toad as Fred
- Luigi as Harold SquarePants
- Princess Daisy as Mrs. SquarePants
- King K. Rool as Squilliam Fancyson
- Baby Bowser as Kevin the Sea Cucumber
- Kiddy Kong as Carl
- Goomba as Jellyfish
- Detective Herlock Solmes as Jack Kahuna Laguna
- Diddy Kong as Grandpa "Grandpappy" Redbeard
- Larry Koopa as Squid Doodle
- Roy Koopa as Sinister Slug
- Bowser as Dennis
- Bowser Jr. as Victor
- Birdo as Mindy
- Cranky Kong as King Neptune
- Toadsworth as A Realistic Fish Head