| 角色 | 饰演者 | 角色介绍 |
| Conor | 刘易斯·麦克杜格尔 | |
| Mum | 菲丽希缇·琼斯 | |
| Grandma | 西格妮·韦弗  | |
| The Monster | 连姆·尼森 | |
| Dad | 托比·凯贝尔 | |
| The Head Teacher | 杰拉丁·卓别林 | |
| Miss Kwan | Jennifer Lim | |
| Lilys Mum | Frida Palsson | |
| Lily | Lily-Rose Aslandogdu | |
| Harry | James Melville | |
| Lawyer | Morgan Symes | |
| Steven | Max Gabbay | |
| Sully | Oliver Steer | |
| Anton | Dominic Boyle | |
| Paramedic | Garry Marriott | |
| Mr. Clark | 本·摩尔 | |
| Rollercoster Rider | 李·博尔顿 | |
| 5-Year-Old Connor | Max Golds | |
| Female Nurse | Wanda Opalinska | |
| Teacher | Patrick Taggart |
