| Name | Character | Episodes |
|---|---|---|
| Hayley Atwell | 4-15 / Lucy | 6 |
| Jim Caviezel | 6 / Michael | 6 |
| Ian McKellen | 2 / Curtis | 6 |
| Jamie Campbell Bower | 11-12 | 6 |
| Ruth Wilson | 313 | 6 |
| Lennie James | 147 | 6 |
| Rachael Blake | M2 | 6 |
| Renate Stuurman | 21-16 | 3 |
| Vincent Regan | 909 | 1 |
| Sara Stewart | 1981 | 1 |
| Warrick Grier | 1955 | 1 |
| Jessica Haines | 554 | 1 |
| Jeffrey R. Smith | 16 | 1 |