Joseph Gatt

as Alexei Andropov

as Master Chief Saxin

as The Boss

as John O'Quinn (1 episode)

as Intergang Squad Leader

as Ram Kady

as Brian Andrews

as Neils Skellig

as Fred

as Nikos Papalexopoulous

as Ivan

as Caleb (1 episode)

as Cain / Able

as Thenn warg

as Victor Zelko (2 episodes)

as The Man (6 episodes)

as Lord Doom (8 episodes)

as Tristan (3 episodes)

as Skull Keeper (1 episode)

as Bogden (1 episode)

as Science Officer 0718

as Albino (3 episodes)

as Albino (voice) (1 episode)

as The Mute (3 episodes)

as Frost Giant Grundroth