A mysterious door in the basement of the Hercules house leads to the Sixth Dimension by way of a gigantic set of intestine. When lovely exchange student Frenchy slips through the door, the diminuitive King Fausto falls in love with her. The jealous Queen Doris takes Frenchy prisoner, and it is up to the Hercules family and friend Squeezit Henderson to rescue her.
| Actor | Role |
|---|---|
 Hervé VillechaizeKing Fausto of the Sixth Dimension | King Fausto of the Sixth Dimension |
 Susan TyrrellQueen Doris of the Sixth Dimension | Queen Doris of the Sixth Dimension |
 Matthew BrightSqueezit Henderson / René Henderson | Squeezit Henderson / René Henderson |
| GGene CunninghamPa Hercules | Pa Hercules |
| MMarie-Pascale ElfmanSusan B. 'Frenchy' Hercules | Susan B. 'Frenchy' Hercules |
| VVirginia RoseMa Hercules | Ma Hercules |
| PPhil GordonFlash Hercules | Flash Hercules |
| HHyman DiamondGramps Hercules | Gramps Hercules |
| BBrian RouthHarry Kipper | Harry Kipper |
| MMartin von HaselbergHarry Kipper | Harry Kipper |
| JJan Stuart SchwartzBust Rod, the Servant Frog | Bust Rod, the Servant Frog |
| GGisele LindleyThe Princess | The Princess |
| KKedric WolfeHuman Chandelier / Miss Feldman, the School Teacher | Human Chandelier / Miss Feldman, the School Teacher |
 VivaEx-Queen | Ex-Queen |
 Joe SpinellDrunken Sailor | Drunken Sailor |
 Danny ElfmanSatan | Satan |
 Richard ElfmanMasseur | Masseur |