| Name | Character | Episodes |
|---|---|---|
| Kalinka Pétrie | Karen Ranger | 2 |
| David Francis | Geoffrey | 2 |
| Matthew Modine | Dr. Michael Ranger | 2 |
| Maxim Roy | Dr. Jane Whitlow | 2 |
| Kimberly-Sue Murray | HFD Tech Rebecca | 2 |
| Susan Hogan | Vice-President Alice Crane | 2 |
| Francis X. McCarthy | William Danville | 2 |
| Ted Whittall | Secretary Brian Lee | 2 |
| Trevor Hayes | Jack Hillcroft | 2 |
| Alain Goulem | President Duncan | 2 |
| Kate Drummond | Beverly Hillcroft | 2 |
| Nancy Helms | Edna | 2 |
| Alex Bisping | Russian President | 1 |
| Andreas Apergis | Parks | 1 |
| Ray Galletti | Senator Maxwell | 1 |
| Neil Napier | Agent | 1 |
| Marcel Jeannin | Military Doctor | 1 |
| Jason Cavalier | Team Leader | 1 |
| Danny Blanco Hall | Carver | 1 |
| Matthew Raudsepp | Hudson | 1 |
| Matthew Boylan | Training Officer | 1 |