Dan Donohue

as Deputy Secretary Heyerdahl (4 episodes)

as Dean Dremel (1 episode)

as Dr. Prescott

as Danny's Partner (1 episode)

as Basil Karlo / Clayface (voice) (1 episode)

as Giovanni (voice) (1 episode), as Abraham (voice) (1 episode), as Giovanni / Abraham (voice) (1 episode)

as Roland (10 episodes)

as Thomas Paine (12 episodes)

as Brother Night (voice) (1 episode), as Brother Night / Merlin (voice) (1 episode)

as Sterling (1 episode)

as Michael (1 episode)

as Andy - Radio Caller (voice) (1 episode)

as Christopher

as Sgt. Grimm

as Paul (1 episode)

as Agent Blake

as Frederick (2 episodes)

as Dr. Martin Cozner (1 episode)

as Attuma (voice) (1 episode)

as Eddie Harp (1 episode)

as Dave Endlich (1 episode)

as Alistair Huddleston (1 episode)

as Rafael (2 episodes)

as Talk Radio Host (1 episode)

as Phil (1 episode)