Cast
- SpongeBob as Sonic the Hedgehog
- Patrick as Miles 'Tails' Prower
- Mr. Krabs as Knuckles the Echidna
- Mrs. Puff as Amy Rose
- Squidward as Antoine
- SpongeBob's Mom as Bunnie Rabbot
- Sandy as Sally Acorn
- Grandpa Redbeard as Rotor the Walrus
- Old Man Jenkins as Uncle Chuck
- Dennis as Dr. Eggman
- Plankton as Snively
- Flats the Flounder as Coconuts
- Johnny Erain as King Acorn
- Jack Kahuna Laguna as Ari the Ram
- Perch Perkins as Griff
- Pearl Krabs as Cream the Rabbit
- Betsy Krabs as Breezie
- Stanley S. SquarePants as Silver the Hedgehog
- SpongeBob's Grandma as Blaze the Cat
- Larry the Lobster as Big the Cat
- Carl as Froggy
- Man Ray as Sleet
- The Dirty Bubble as Dingo
- The Doctorfish as Vector the Crocodile
- Scooter as Espio the Chameleon
- Bubble Buddy as Mighty the Armadillo
- Monroe as Charmy Bee
- SpongeBob's Dad as Shadow the Hedgehog
- Karen as Rouge the Bat
- Gary the Snail as Robotnik Jr.
- Mermaid Man as Heavy
- Barnacle Boy as Bomb
- Squid Doodle as Bocoe
- Sinister Slug as Decoe
- Princess Mindy as Cosmo
- Fred as Chip
- Tattletale Strangler as Bokkun
- Nancy Suzy Fish as Rosie
- Jellyfishes as Robots
- Bubble Bass as Ixis Naugus
- Mrs. Gristlepuss as Tikal
- The Flying Dutchman as Captain Rescue
- Squilliam Fancyson as Jet
- The Thug Tug Owner as Storm
