Jeremy Wilkin

as Captain Ochre (voice)

as Self

as James Nolan

as Dr. Melplash

as Albert Bitterling

as Dev Tarrant

as Doctor (1 episode)

as Fordham (1 episode)

as Virgil Tracy / Cravitz (voice)

as Gidney (3 episodes)

as Virgil Tracy / Operator Power / Tom (voice)

as Captain Ocher / Angelini / Control / Shroeder / Kurnitz / Human Captain Black (voice)

as General / Officer / Lieutenant / Tanker / Hunter 2 / B107 Co-Pilot Hal / 2nd Russian (voice)

as Captain Ochre / Jackson / Human Captain Black / Various Characters (voice)

as Artillery Officer

as Dev Tarrant (1 episode)

as Dr. Tulliver (1 episode), as Richards (1 episode)

as Eric Mackay (1 episode)

as Insp. Lars Bergen (1 episode)

as DS William Peel (1 episode)

as Army Captain

as Geoff

as Gordon Maxwell (7 episodes), as Skydiver Navigator Lt. Gordon Maxwell (1 episode)