Season 1
- Everything Changes - Suzie Costello
- Day One - The Sex Gas
- Ghost Machine - N/A
- Cyberwoman - Lisa Hallett
- Small Worlds - The Fairies
- Countrycide - The cannibals led by Evan Sherman
- Greeks Bearing Gifts - "Mary"
- They Keep Killing Suzie - See Everything Changes
- Random Shoes - N/A
- Out of Time - N/A
- Combat - N/A
- Captain Jack Harkness/End of Days - Abaddon with Bilis Manger
Season 2
- Kiss Kiss, Bang Bang - Captain John Hart
- Sleeper - Cell 114
- To the Last Man - N/A
- Meat - N/A
- Adam - "Adam Smith"
- Reset - Aaron Copley
- Dead Man Walking - Duroc
- A Day in the Death - N/A
- Something Borrowed - The Nostrovite
- From Out of the Rain - The Night Travellers
- Adrift - N/A
- Fragments/Exit Wounds - Gray
Season Three: Children of Earth
Season 4: Miracle Day
- The New World - N/A
- Rendition - Lyn Peterfield
- Dead of Night - Brian Friedkin
- Escape to LA - The Gentleman
- The Categories of Life/The Middle Men - Colin Maloney
- Immortal Sins - N/A
- End of the Road - Brian Friedkin, Charlotte Willis
- The Gathering - The Three Families with Charlotte Willis
- The Blood Line - The Three Families (The Mother Colasanto & the Blue-Eyed Man) with the Blessing, Jilly Kitzinger & Charlotte Willis