Imaginative and creative Jack seeks adventure while trying to provide for himself and his mother. Will he ever solve the mystery of how his father died?
| Actor | Role |
|---|---|
 Dennis ChristopherJack | Jack |
 Elliott GouldThe Giant | The Giant |
 Jean StapletonThe Giantess | The Giantess |
 Katherine HelmondJack's Mother | Jack's Mother |
 Mark BlankfieldStrange Little Man / Fairy / Narrator | Strange Little Man / Fairy / Narrator |
 Jerry HallThe Lady of the Harp | The Lady of the Harp |
| LLise LangSpot, the Cow | Spot, the Cow |
| TTy CrowleySpot, the Cow | Spot, the Cow |
 Lamont JohnsonSpot, the Cow (voice) | Spot, the Cow (voice) |
| BBilly BryanThe Hen Puppeteer | The Hen Puppeteer |
 Shelley DuvallSelf - Host (uncredited) | Self - Host (uncredited) |