| Captain | Andre | The Little Hip trainer. |
| John Jacob | Astor | The library's founder. |
| Leo | Astor | The lion Potter sculpted. |
| Harry | Block | The owner of the watch Eddie stole. |
| Juliet | Block | Harry's sister. |
| Jack | Bonavita | The great animal trainer. |
| Edward | Clark-Potter | A lion sculptor. |
| Anna | Cohen | Eddie's mother. |
| Ezekiel | Cohen | A photographer. One of the protagonists. Aka: Ed, Eddie. |
| Joseph | Cohen | Eddie's father. Aka: Yoysef. |
| Edward | Crocker | The Chief of Manhattan Fire. |
| Marie | De Montague | Coralie's workmate. |
| John | Dix | The governor. |
| King Of The | Ducks | Professor Sardie's colleague. |
| Joseph | Ferrari | A colonel. An animal lover. |
| Sigmund | Freud | A famous scientist. |
| Little | Girl | A horse. |
| Jack | Hailey | Eddie's acquaintance. |
| Matt | Harris | A Times Reporter. |
| Frank | Herbert | Harry's employee. |
| Maureen | Higgins | The Sardie's houseekeeper. |
| Little | Hip | An elephant who was so attached to his trainer. |
| Harold | Kelly | The watchmaker. |
| James | Lenox | The library's founder. |
| Leo | Lenox | The lion Potter sculpted. |
| Moses | Levy | The famous photographer. Eddie's mentor. |
| Abraham | Lincoln | The U.S. President. |
| Maria | Louisa | Coralie's mother. |
| Clement | Moore | An author. |
| Raymond | Morris | The wolfman. Maureen's lover. |
| Queen | Of Fatland | One of the stars at Dreamland sideshow. Aka: Josephine. |
| Edward | Osterman | The liveryman. Eddie's new friend. Aka: Eastman. |
| Big | Pin | The corrupt arm of the democratic party. |
| Black | Prince | Bonavita's black-maned lion. |
| William | Reeves | Professor Sardie's new employee. |
| Franklin Delano | Roosevelt | A New York legislator. |
| Isaac | Rosenfeld | The boy that Ezekiel befriended. |
| Rob | Roy | The albino. |
| Aaron | Samuels | Hannah's lover. |
| Coralie | Sardie | Protagonist. |
| Professor | Sardie | The owner of The Museum of Extraordinary Things. Coralie's father. |
| Alfred | Stieglitz | A photographer. |
| Jacob | Van Der Beck | The Hermit. |
| Miss | Weber | A hat shop owner. |
| Ella | Weiss | Hannah's twin. |
| Hannah | Weiss | The girl Eddie was looking for. Missing. |
| Samuel | Weiss | Hannah's father. |
| Walt | Whitman | A poet. |
| Agnes | | Harry's maid. |
| Antoinette | | The Block's dog. |
| Baltimore | | One of Bonavita's lions. |
| Barker | | Harry's doorman. |
| Barnum | | A circus owner. |
| Darling | | Coralie's acquaintance. |
| Edison | | An inventor. |
| Gaynor | | A mayor. |
| Gianni | | The man who ate fire. Missing. |
| Helen | | Helena's conjoined twin. One of Professor Sardie's stars. |
| Helena | | Helen conjoined twin. One of Professor Sardie's stars. |
| Hochman | | The owner of The Hall Of Love. Eddie's boss. |
| Horace | | Professor Sardie's new employee. Aka: The Jungle Boy. |
| Jackson | | A horse. |
| Jasper | | The Block's dog. |
| Jeremiah | | A sword swallower. |
| Joe | | The liveryman. Aka: Johnson. |
| Malia | | A girl at the museum whose arms resembled a butterfly's wings. |
| Marcus | | The liveryman. One of Harry's employees. |
| Mary | | Coralie's sheep. |
| Matilda | | Coralie's sheep. |
| Mitts | | Eddie's pit bull. |
| North | | A wolf dog. |
| R | | A survivor. Hannah's closest friend. |
| Rose | | Hannah's friend. |
| Sally | | A horse. |
| Sarah | | Harry's maid. |
| Schrief | | The human salamander. |
| Solomon | | Hochman's photographer. |
| Spot | | A horse. |
| Taft | | The current U.S. President. |
| Tiffany | | Hochman's ashtray. |
| Topsy | | An elephant. |
| Ursa | | The bear girl. |
| Waldo | | The commissioner. |
| Westinghouse | | Edison's rival. |
