Paul Stevens

as George Welles (1 episode), as John Stabila (1 episode)

as Enzo Cortino

as Mendez

as Col. William Franklin

as George Driscoll (1 episode)

as Mitch

as Tobin Hayes

as Buddy Stone (1 episode)

as Marsh (1 episode)

as Lieutenant Colonel Charles R. Codman

as Dr. Vincent Lagardie

as Luang Koryo (1 episode), as Colfax (1 episode)

as Mayor Glass (1 episode), as Vernon Olson (1 episode), as Walter Timpkins (1 episode)

as Stanislaus Cardinal Souchek / Anton Nagorsk (1 episode), as Frank Wayne (2 episodes), as Alexi Kerkoska (1 episode)

as Gideon Falconer (1 episode)

as Diogenes

as Fasik el Pasad (1 episode)

as Louis Newborn

as Doctor Allan Barnes

as (uncredited)

as D.A. Max Hunter (1 episode)

as Reuben

as Peter Quint