Casting | Rôle |
|---|
| 徐天佑 | Chan Tsz Kin |
| 黃又南 | Ho Ka Him |
| 蔡卓妍 | Lam Hoi Yee |
| 吳肇軒 | Little Brother |
| 衛詩雅 | Leung Wing Yan |
| 梁雍婷 | Cat |
| 梁祖堯 | Austin |
| 白只 | Uncle |
| 賈曉晨 | Kin's Mother |
| 杜德偉 | Kin's Father |
| 朱栢康 | Him's Old Brother |
| 歐錦棠 | Him's Father |
| 盧海鵬 | Him's Grandfather |
| 章國明 | Hoi Yee's Father |
| 文雪兒 | Hoi Yee's Mother |
| 鄧梓峰 | Manager of the accountant firm |
| Kwok Siu Kit | Interviewee for the Space Museum Vacancy |
| 黃定謙 | Interviewee for the Space Museum Vacancy |
| 楊偉倫 | Interviewee for the Space Museum Vacancy |
| 盧覓雪 | Host of the alien TV show |
| 李尚正 | Host of the alien TV show |
| 曹捷 | Guest speaker of the alien TV show |
| 張錦霞 | Woman on the queue for tamagochi |
