In the midst of the atomic age, an infertile couple's life becomes an inescapable nightmare after participating in an experimental clinical trial that leads to the birth of a horrific mushroom baby.
| Actor | Role |
|---|---|
| SStuart ZubrzyckiHenry | Henry |
| CClaire Lebowitz-KingMary | Mary |
| TTony GoodallDr. Langley | Dr. Langley |
 Mu LakhiHazmat | Hazmat |
| TTom J LintinThe President (Voice) | The President (Voice) |
| LLiam PickersgillGreg, The Shroom Baby | Greg, The Shroom Baby |
| EEmilia LesterNurse | Nurse |