| 1 | Katherine | Battista | A preschool teacher assistant. aka: Kate. |
| | Bernice | Battista | Kate's sister. aka: Bunny. |
| | Rose | Gordon | Kate's acquaintance. |
| | Louis | Battista | A scientist. Kate and Bunny's father. |
| | Pyotr | Shcherbakov | A research assistant. |
| | Ennis | | Dr. Battista's former assistant. |
| 2 | Jilly | | One of the children at Little People's School. |
| | Emma | Gray | One of the children at Little People's School. |
| | Emma | B. | One of the children at Little People's School. |
| | Jameesha | | One of the children at Little People's School. |
| | Raymond | Samson | One of the children at Little People's School. |
| | David | Samson | Raymond's twin brother. |
| | Edna | Darling | Founder of the Charles Village Little People's School. |
| | Thelma | | Kate's aunt. |
| | Mrs. | Chauncey | A teacher Kate assisted. |
| | Connor | Fitzgerald. | An Irish rugby union player. |
| | Emma | Wills | One of the children at Little People's School. |
| | Chloe | Smith | One of the children at Little People's School. |
| | Jason | | One of the children at Little People's School. |
| | Fritz | | A dog. |
| | Antwan | | One of the children at Little People's School. |
| | Mrs. | Washington | A cook. |
| | Georgina | | A teacher assistant. |
| | Liam | D. | One of the children at Little People's School. |
| | Mr. | Crosby | Jameesha's father. |
| | Benny | Mayo | One of the children at Little People's School. |
| | Natalie | | A teacher assistant. |
| | Adam | Barnes | A school male assistant. |
| | Gregory | | One of the children at Little People's School. |
| | Danny | | One of the children at Little People's School. |
| | Sophia | Watson | Adam's co-assistant at Room 2. |
| | Edward | Mintz | Bunny's acquaintance. |
| | Sonia | Mintz | Edward's mother. |
| | Senora | McGillicuddy | Bunny's teacher in Spanish. |
| | Thea | Battista | Kate and Bunny's mother. |
| 3 | Mrs. | Amherst | Kate's acquaintance. |
| 4 | Mrs. | Bower | One of the teachers at Little People's School. |
| | Mrs. | Fairweather | One of the teachers at Little People's School. |
| | Liam | M. | One of the children at Little People's School. |
| | John | Hopkins | An English actor. |
| | Tommy | Bass | One of the children at Little People's School. |
| | Cordelia | | One of the children at Little People's School. |
| | Mrs. | Larkin | Battista's former housekeeper. |
| | Stephen Jay | Gould | American paleontologist, evolutionary biologist, and historian. |
| 7 | Emma | K. | One of the children at Little People's School. |
| | Mrs. | Link | A teacher at Little People's School. |
| | Taylor | Swift | American singer-songwriter. |
| | Theron | Dell | Kate's uncle. Thelma's twin brother. |
| 8 | Barclay | | Thelma's husband. |
| | Richard | | Thelma's son. |
| | Sid | | Rose Gordon's husband. |
| | Alice | | Kate's best friend. |
| | Mrs. | Murphy | An apartment owner. |
| 9 | Mrs. | Liu | Mrs. Murphy's live-in attendant. |
| 10 | Mrs. | Carroll | Battista's new housekeeper. |
| | Tayeema | | Thelma's maid. |
| | Avis | Brood | Theron's assistant. |
| 11 | | McEnroe | A detective. |
| 12 | Jeannette | | Richard's wife. |
| | Jerry | | Alice's husband. |
| | Morton | Stanfield | An immigration lawyer. |
| | Jim | | Edward Mintz's father. |
| Epi | Louie | Shcherbakov | Pyotr and Kate's son. |
