Popeye, Olive Oyl and more King Features Syndicate comic strip characters are invited on a cruise hosted by Professor Grimsby, a mad scientist who wants to eliminate laughter from the world. When the ship is held hostage on his island lair, it's up to the much more action-inclined Mandrake the Magician, Steve Canyon, and Flash Gordon (among others) to save the funnymakers from their eternal inprisonment.
| Actor | Role |
|---|---|
 Bob McFaddenMale characters (voice) | Male characters (voice) |
 Corinne OrrFemale & children Characters (voice) | Female & children Characters (voice) |
 Jack MercerPopeye / Wimpy (voice) | Popeye / Wimpy (voice) |