Brian d'Arcy James

as Teddy Finnegan

as Peter Moira (8 episodes)

as Walter

Thanks

as Dennis

as Dr. Lydell

as Trey Ruffa

as Dr. Fred Fason (2 episodes)

as Bo

as Bruce (5 episodes)

as Richard Damrosch

as Dr. Kemp

Executive Producer

as Officer Krupke

as Derek Bishop (1 episode)

as The General (voice) (3 episodes)

as Mark Giuliano (2 episodes)

as Anton (1 episode)

as Brian Wilson (uncredited)

as Victor LeConte (7 episodes)

as Jimmy Brennan