 | Gypsy-Rose Blanchard-Anderson als Herself |
 | Dee Dee Blanchard als Herself (archive footage) |
| Rod Blanchard als Himself - Gypsy's Father |
| Kristy Blanchard als Herself - Gypsy's Stepmother |
| Jim Arnott als Himself - Sheriff |
| David Blanchard als Himself - Gypsy's Neighbor (archive footage) |
| Michelle Dean als Herself - Freelance Journalist |
| Marc Feldman als Himself - Munchausen Expert |
| Bernard Flatersten als Himself - Pediatric Neurologist |
| Nicholas Godejohn als Himself - Gypsy's Boyfriend (archive footage) |
| Charles Goldhammer als Himself - Nick's Stepfather (archive footage) |
| Stephanie Goldhammer als Herself - Nick's Mother (archive footage) |
| Calvin Holden als Himself - Judge (archive footage) |
| Linda Ong als Herself - Reporter |
| Dan Patterson als Himself - Prosecutor |
| Andrew Coffman | Co-Producer |
| Erin Lee Carr | Director |
| Sheila Nevins | Executive Producer |
| Erin Lee Carr | Producer |
| Andrew Rossi | Producer |
| Bryan Sarkinen | Director of Photography |
| Andrew Coffman | Editor |
| Ian Hultquist | Original Music Composer |
| Alison Byrne | Co-Producer |
| Sara Bernstein | Supervising Producer |
