| Declan | Bree | An Irish independent politician. |
| Helen | Brophy | A medical student. |
| James | Connolly | A Scottish-born Irish republican and socialist leader. |
| Steven | Gerrard | An English professional football manager. |
| Isa | Gleeson | Connell's ex-girlfriend. |
| Ciara | Heffernan | A senior analyst. |
| Rob | Hegarty | One of Connell's friends. |
| Jack | Hynes | Eric's friend. |
| Miss | Keaney | A coach. |
| Annie | Kearney | An actress. |
| Niamh | Keenan | The girl at the bar. |
| Caoimhín | Kelleher | An Irish professional footballer. |
| Aidan | Kennedy | One of the players. |
| Barry | Kenny | A Corporate Communications Manager. |
| Mr. | Kerrigan | A history teacher. |
| Mr. | Lyons | A teacher. |
| Curtis | Mayfield | American singer-songwriter. |
| Conor | McCready | Connell's pseudoname. |
| | McGowan | An artist. |
| Rachel | Moran | The most popular girl in school. |
| Van | Morrison | Singer-songwriter. |
| Paula | Neary | Economics' teacher. |
| Dr. | O'Malley | A physician. |
| Denis | O'Brien | An Irish billionaire businessman. |
| Frank | O'Hara | American writer. |
| Sadie Darcy | O'Shea | Editor of the College Literary Journal. |
| Ronald | Reagan | 40th U.S. President. |
| James | Salter | American novelist. |
| Denise | Sheridan | Marianne's mother. |
| Marianne | Sheridan | Connell Waldron's friend. |
| Edward | Snowden | American journalist. |
| Johannes | Vermeer | Dutch painter. |
| Connell | Waldron | A centre forward in football. |
| Kanye | West | American rapper. |
| Sophie | Whelan | Connell's friend. |
| Alan | | Marianne's brother. |
| Eileen | | Rob's mother. |
| Elaine | | Connell's acquaintance. |
| Eric | | One of Connell's friends. |
| Evelyn | | Joanna's girlfriend. |
| Gareth | | Connell's acquaintance. |
| Helen | | Connell's girlfriend. |
| Jack | | Lisa's friend. |
| Jamie | | One of Mariane's friends. |
| Joanna | | One of Marianne's friends. |
| Karen | | Marianne's acquaintance. |
| Lisa | | One of the girls from the fundraising committee. |
| Lorcan | | Teresa's boyfriend. |
| Lorraine | | Connell's mother. |
| Lukas | | Marianne's friend. An artist. |
| Niall | | Connell's roommate. |
| Pat | | Eric's friend. |
| Peggy | | One of Marianne's friends. |
| Rory | | Helen's ex-boyfriend. |
| Sinead | | Barry Kenny's sister. |
| Teresa | | One of Marianne's friends. |
| Val | | Rob's father. |
| Yvonne | | A University counselor. |
