John Finn

as Clark (5 episodes)

as Máirtín

as Jackson Chase (3 episodes)

as Brigadier General Stroud

as Jack Welch (1 episode)

as W. Mark Felt

as Richard Bregman (1 episode)

as Driscoll

as Aubrey Highsmith

as Arthur 'Bull' Hancock (1 episode)

as Seán Óg (5 episodes)

as Allen Bollings (1 episode)

as Sean Og

as Big Jason

as Ed McKenzie (1 episode)

as Neil Dannon (1 episode)

as Rex Henning (1 episode)

as Lawrence Kemp (1 episode)

as Earl Sutton (11 episodes)

as David Cummings (1 episode), as Fire Marshal Chieco (1 episode)

as Oren Cleary (1 episode)

as Louie Borero

as John Stillman (156 episodes), Director

as Charles T. Ellison (3 episodes)

as Ted Chenoweth