- Bart Simpson as Greg Wiggle
- Nelson Muntz as Murray Wiggle
- Homer Simpson as Anthony Wiggle
- Milhouse Van Houten as Jeff Wiggle
- Lisa Simpson as Dorothy the Dinosaur
- Santa's Little Helper as Wags the Dog
- Ralph Wiggum as Henry the Octopus
- The Sea Captain as Captain Feathersword
- Jessica Lovejoy as Magdalena the Mermaid
- Martin Prince Jr. as Sam Wiggle
- Moe Syslak as Benny Rabbit (From Sesame Street)
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