| Name | Type | Role | |
|---|---|---|---|
| Dan Freedman | Writer | ||
| Kevin Eldon | Guest Star | Antimony | |
| Huw Thomas | Guest Star | President of Santine | |
| Richard Garaghty | Guest Star | Senator / Soldier / Civilian | |
| Moray Treadwell | Guest Star | Captain | |
| Britta Gardner | Guest Star | Sala | |
| Benjamin Langley | Guest Star | Fighter Pilot | |
| Jon Culshaw | Guest Star | The Guard / Senator Hawk | |
| Jacqueline Pearce | Guest Star | Admiral Mettna | |
| Dan Freedman | Director |