| Paula |
Abdul | American singer and dancer. |
| Barbara |
Cameron | A well-known agent. |
| Candace |
Cameron | Barbara Cameron's daughter. |
| Kirk |
Cameron | Barbara Cameron's son. |
| Miranda |
Cosgrove | Jennette's co-star from iCarly. |
| The |
Creator | The creator of the television show iCarly. |
| Susan |
Curtis | The talent manager Debra wants Jennette to sign with. |
| Hilary |
Duff | American actress and singer. |
| Dakota |
Fanning | American actress. |
| Meredith |
Fine | Jennette's agent. |
| Jodie |
Foster | American actress and filmmaker. |
| Holy |
Ghost | The voices Jennette hears in her head. |
| Kathie Lee |
Gifford | Television host and singer. |
| Anjelica |
Gutierrez | Jennette's classmate. |
| Current |
Guy | Jennette's current boyfriend. |
| Sister |
Huffmire | Nun at Jennette's local church. |
| Sister |
Johnson | One of the teachers at Jennette's school. |
| Nick |
Jonas | American singer and actor. |
| Quincy |
Jones | American record producer and composer. |
| Nathan |
Kress | One of Jennette's co-stars. |
| Laura |
Lasky | Barbara Cameron's assistant. |
| Jay |
Leno | American television host and comedian. |
| Makaylah |
Lindsey | Jennette's classmate. |
| Andrew |
McCurdy | Jennette's biological father. |
| Debra |
McCurdy | Jennette's dying mother. |
| Dustin |
McCurdy | Jennette's brother. Aka: Smart. |
| Elizabeth |
McCurdy | Marcus's wife. |
| Jennette |
McCurdy | Protagonist, narrator, and author. Aka: Nettie. |
| Marcus |
McCurdy | Jennette's brother. |
| Mark Eugene |
McCurdy | Jennette's father. |
| Scott |
McCurdy | Jennette's brother. Aka: Sensitive. |
| Conan |
O'Brien | American television host and comedian. |
| Trent |
Paige | One of Jennette's friends. |
| Carly |
Reitzel | One of Jennette's friends. |
| Samantha |
Runnion | A girl kidnapped three weeks before her birthday. |
| Amanda |
Seyfried | American actress. |
| Joseph |
Smith | Religious leader and founder of the Latter Day Saint movement. |
| Sister |
Smith | Jennette's teacher. |
| Madison |
Thomer | One of Jennette's friends. |
| Dr. |
Tran | Jennette's doctor. |
| Mike |
Wazowski | Main monster character from Monsters, Inc. |
| Dr. |
Weissman | Debra's doctor. |
| Robin |
Wright | American actress and film producer. |
| Bob |
| Jennette's grandfather. |
| Bud |
| McCurdy's nosy neighbor. |
| Carl |
| Security guard. |
| Chip |
| The camera operator. |
| Colton |
| Jennette's gay friend. |
| Dave |
| The videographer. |
| Dewey |
| Dewey-like role referenced from Malcolm in the Middle. Aka: Daisy. |
| Emily |
| Daughter of a killer mentioned in the narrative. |
| Emmy |
| Jennette's friend. |
| Faye |
| Jennette's grandmother. |
| Glen |
| A paparazzi and Deb's neighbor. |
| Goatee |
| A talent manager. |
| Jeff |
| Jennette's therapist. |
| Joe |
| Jennette's co-worker and first boyfriend. |
| Karen |
| Debra's best friend. |
| Kate |
| Dustin's fiancée. |
| Liam |
| Jennette's boyfriend. |
| Liz |
| Interior designer. |
| Madison |
| Jennette's classmate. |
| Patti |
| Jennette's schoolteacher. |
| Steven |
| Assistant director on Jennette's shoot. |
| Teresa |
| Jennette's neighbor. |
