| Disabled | Brain | The unnamed narrator. Rick's companion. |
| Isaac | Columbo | Saul's younger brother. The beggar. |
| Saul | Columbo | A mental patient. |
| Jacob | Drubinski | A psychiatrist. |
| Darko | Karepevic | Saul's psychiatrist. |
| Ihor | Kuziak | A dog breeder. |
| Sandy | Kuziak | Ihor's wife. |
| David | Oppenheimer | The second mayor. |
| J. Robert | Oppenheimer | The man that Henry befriended. Aka: Oppie. |
| Anna | Prince | A casting director. Sam's wife. |
| Sam | Prince | Anna's husband. Isaac's companion. |
| Martin | Shenck | The minister of mental health. |
| Baldev | | Rick's landlord. |
| Bernice | | Wanda's elder sister. |
| Brenda | | Henry's colleague. |
| Brian | | The surgeon. Wanda's lover. |
| Buddy | | Dan's dog. |
| Carol | | Bernice's new supervisor. |
| Cricket | | Sam and Anna's daughter. |
| Dan | | A dog lover. One of the protagonists. |
| Dennis | | Sarah's former lover. Kyle's father. Anna's father. |
| Earl | | Kyle's grandfather. |
| Finch | | Jerzy's brother. |
| Frieda | | Georgina's nurse. |
| Georgina | | Saul's co-patient. |
| Gerwer | | Maya's doctor. |
| Ginnie | | The dog owner that Dan met. |
| Gretchen | | Anna's mother. |
| Gus | | Bernice's husband. Aka: Gustavo. |
| Harold | | A junk buyer. Bernice customer. |
| Henry | | A drug addict. Aka: Hank. |
| Jacob | | Winston's son. |
| Janet | | Saul's former nurse. |
| Jerzy | | Finch's brother. |
| Josephine | | Ginnie's dog. |
| Karla | | A thrift store volunteer. |
| Linda | | Henry's social worker. Disabled Brain's disability worker. |
| Luis | | A new nurse. |
| Margo | | One of the psych nurses. |
| Marta | | The girl Winston impregnated. |
| Martin | | A gambler. Maya's neighbor. |
| Marvin | | An elderly man who lives in Maya's building. |
| Maya | | The woman who was in love with a paramedic. |
| Pete | | Carol's supervisor. |
| Reginald | | Sarah's ex-lover. |
| Rick | | Disabled Brain's companion. |
| Roberta | | The duty nurse. |
| Sarah | | Earl's daughter. |
| Sideburns | | The paramedic. |
| Stevie | | An old junkie. Henry's neighbor and only friend. |
| Tina | | Saul's friend. |
| Tuan | | Bernice's workmate. A store volunteer. |
| Tuuli | | Earl's wife. |
| Wanda | | Bernice's younger sister. |
| Winston | | Dan's best friend and band mate. |
