- Lt. Commander Thomas "Tom" Dodge as Dexter
- Lt. Emily Lake as Dee Dee
- Lt. Martin T. "Marty" Pascal as Mayor Glory
- Chief of the Boat as Action Hank
- Rear Admiral Yancy Graham as Dexter's Monkey
- Commander Carl Knox as Douglas
- Culinary Specialist 2nd Class Buckman as Valhallen
- Fireman Niitro "Mike" as Krunk
- Planesman 1st Class Jefferson "R.J." Jackson as Dexter's Dad
- Seaman Stanley "Spots" Sylvesterson as Dexter's Grandpa
- Engineman 1st Class Brad Stepanak as Mandark's Duck
- Sonarman 2nd Class E.T. "Sonar" Lovacelli as Mr. Luzinsky
- Vice Admiral Dean Winslow as Mandark
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