| Ms. |
Baskerville | Belly's 9th-grade teacher. |
| Clay |
Bertolet | The Fishers' neighbor. |
| Claire |
Cho | Steven's ex-girlfriend. |
| Winston |
Churchill | British statesman. |
| Kurt |
Cobain | Musician. |
| Conrad |
Fisher | Boy that Belly likes; Jeremiah's brother. |
| Jeremiah |
Fisher | Susannah's son. |
| Mr. |
Fisher | Susannah's husband. |
| Susannah |
Fisher | Belly's mother's best friend. Aka: Beck. |
| Bridget |
Jewel | Taylor's sister. |
| Taylor |
Jewel | Belly's best friend. |
| Sean |
Kirkpatrick | Belly's former classmate. |
| Junior |
Mint | Belly's stuffed bear. |
| Tom |
Petty | Musician. |
| Christi |
Turnduck | Jeremiah's first kiss. |
| Angie |
| The girl Conrad likes. |
| Aubrey |
| Conrad's ex-girlfriend. |
| Cameron |
| The boy Belly meets. Aka: Cam. |
| Claude |
| Belly's father's cat. |
| Granna |
| Belly's grandmother. |
| Greg |
| Cam's friend who hosts a party. Aka: Kinsey. |
| Isabel |
| Protagonist. Aka: Belly. |
| Jill |
| Belly's neighbor. |
| Jimmy |
| Crab shack owner. |
| Katie |
| Waitress. |
| Laurel |
| Belly's mother. |
| Nicole |
| The girl who likes Conrad. Aka: Red Sox Girl. |
| Steven |
| Belly's brother. |
| Yolie |
| The girl in love with Jeremiah. |
