| | | | Part One |
| | Siddalee | A. Walker | Protagonist. Aka: Sidda, Siddy. |
| | Necie | Ogden | Vivi's bestfriend. One of the Ya-Yas. Aka: Tooty. |
| | Caroline | B. Brewster | Vivi's friend. One of the Ya-Yas. Aka: Caro. |
| | Aimee | M. Whitman | Vivi's friend. One of the Ya-Yas. Aka: Teensy. |
| | Tallulah | Bankhead | The Ya-Ya's idol. |
| | Viviane | A. Walker | Sidda's mother. One of the Yayas. Aka: Vivi. |
| | M'lain | Chauvin | One of the Popular Girls. Sidda's friend. |
| | Sissy | | One of the Popular Girls. Sidda's friend. |
| | Mimi | Plauche | One of the Popular Girls. Sidda's friend. |
| | Rena | Litz | The leader of the Almost-Popular Girls. |
| Edythe |
Spevey | Sidda's co-camper at Mary Alice. An unpopular girl. |
| | Shepley | Walker Jr. | Sidda's brother. Aka: Little Shep. |
| | Charlene | Parks | Sidda's dance teacher. |
| | Buggy | Abbott | Vivi's mother. Sidda's grandmother. |
| | Jezie | Abbott | Sidda's aunt. |
| | Tallulah | Walker | Sidda's sister. Aka: Lulu. |
| | Baylor | Walker Jr. | Sidda's brother. |
| | Miss | Peppy | Buggy's dog. |
| | Sherry | Jenkins | Sidda's friend. |
| | Nancy | Drew | An Author. |
| | Shepley J. | Walker | Sidda's father. Vivi's husband. Aka: Big Shep. |
| | Mister | Thibeaux | Big Shep's friend. |
| | Claude | Hathaway | Sidda's doctor. |
| | Chaney | | Big Shep's right-hand man. |
| | Wiletta | | Big Shep's maid. Aka: Letta. |
| | Nadine | | The owner of the Spring Creek Shop and Skate. |
| | Mr. | Modine | The Sheriff. |
| | Gavin | Brewster | Caro's son. Bernard's twin. |
| | Bernard | Brewster | Caro's son. Gavin's twin. |
| | Abby | Chauvin | M'lain's mother. |
| | Lenora | | Sidda's friend. A lady who saved books for Sidda. |
| | Sim | | Sidda's friend. |
| | Bernard | | Sidda's friend. |
| | Pete | | Sidda's uncle. |
| | Kidd | | The Mayor. |
| | Jep | | Sidda's catahoula hound. |
| | Lamar | | Sidda's german shepherd. |
| | Charlie | Vanderlick | Family friend of the Walker family. |
| | Jolene | | Sidda's dog. |
| | Josie | | A dog who has an ability to sleep standing up. |
| | Dr. | Fitzsimmons | The veterinarian. |
| | Sister | Osberga | A nun at Our Lady of Divine Compassion Parochial School. |
| | Marie | Williams | Sidda's friend. |
| | Mr. | Julian | Owner of a beauty salon. |
| | Jeannine | | Owner of the house of beauty. |
| | Antoinette | Williams | Marie's mother. |
| | Mr. | Williams | Marie's father. |
| | Kathy | Williams | Marie's sister. |
| | Theresa | Williams | Marie's sister. |
| | Monica | Williams | Marie's sister. |
| | Bernadette | Williams | Marie's sister. |
| | Jude | Williams | Marie's brother. |
| | Sister | Philomena | One of Sidda's friends. |
| | Amy | | Sidda's best friend. |
| | Rosalyn | | The cosmetic lady. |
| | Mr. | Couvillion | Big Shep's friend. |
| | Verna | | A saleslady at the Cowboy Store that Sidda met. |
| | Rosalyn | | Verna's friend and workmate. |
| | Chick | | Teensy's husband. |
| | Ruffin | | Teensy and Chick's son. |
| | Miss | Lucille | A former famous horsewoman. |
| | | | Part Two |
| | Baylor | Walker Sr. | Sidda's grandfather. Big Shep's father. |
| | Ruby | | Willeta's daughter. |
| | Pearl | | Willeta's daughter. |
| | Kane | Walker | Little Shep's wife. |
| | Lucinda | | Willeta's girl best friend. |
| | Bibu | Crowell | Soneone Little Shep likes. |
| | Pres | Davis | Little Shep's friend. |
| | Wascomb | Beldevere | The current Thornton Mayor. Aka: Catfish. |
| | Lincoln | | Chaney's brother. |
| | Melissa | D. Walker | Baylor's wife. |
| | Jeff. | Walker | Baylor and Melissa's son. Caitlin's twin. |
| | Caitlin | Walker | Baylor and Melissa's daughter. Jeff's twin. |
| | Walker | Percy | The author that Baylor idolized. |
| | Melvin | Jeansone | The chief of police. |
| | Hazelinda | Beldevere | Wascomb's wife. |
| | Crowell | Jefers | The new Mayor. |
| | Neal | Chauvin | Big Shep's friend. M'lain's father. |
| | Russell | Long | Former U.S. Senator. |
| | Alma | Vanderlick | Charlie's wife. |
| | Albert | Vanderlick | Alma and Charlie's son. |
| | Sary | | Mike's friend. |
| | Mike | | The old man who goes to Big Shep's farm. |
| | Freddy | | Vivi's neighbor. |
| | Benjamin | Spock | An American pediatrician. |
| | Joan | Crawford | An American Actress. |
| | Connor | | Sidda's best friend. |
| | Siddalee | D. Walker | Baylor and Melissa's daughter. Sidda's goddaughter. |
| | Mr. | Messina | A priest. |
