| Name | Character | Episodes |
|---|---|---|
| Sophia Forrest | Natalie Goold | 4 |
| Claudia Jessie | Polly Miller | 4 |
| Richard Roxburgh | Graham Ashton | 4 |
| Elizabeth Cullen | Nicole McLean | 4 |
| Saskia Archer | Hanabeth Luke | 4 |
| Sean Keenan | Jason McCartney | 4 |
| Josh Heuston | Luke Beasley | 3 |
| Patch May | Mick Martyn | 3 |
| Melissa Bonne | Lydia | 3 |
| Arka Das | Dr. Vij Vijayasekaran | 2 |
| Anthony Brandon Wong | Dr. Harry | 2 |
| Amali Golden | Priya | 2 |
| Daniel Krige | Western Man | 2 |
| Rachel Griffiths | Fiona Wood | 1 |
| Ewen Leslie | Tony Keirath | 1 |
| Renee Lim | Joy Fong | 1 |
| Aiden Mckenzie | Orderly (uncredited) | 1 |