Liam Glasser (3 episodes)
Bartender Droid (voice) (1 episode)
Walter Johnston (12 episodes)
Mr. Brubaker (1 episode)
Pastor Walter (1 episode)
Michele Besso (5 episodes)
Guillaume Apollinaire (5 episodes)
Luke
Ryan
Cotton Mather (36 episodes)
Buddy Rovner (1 episode)
The Count (3 episodes)
Roderick Usher
Lieutenant Danny Sefton
Advisor
Lincoln Lee (31 episodes)
Alternate Lincoln Lee (3 episodes)
Jerry's Friend #2
Kissing Man
Jeremy Darling (23 episodes)
Michael
Nikolai Koslov (1 episode)
Garrett Perle (1 episode)
Gavin 'Rex' Layne (1 episode)
Larry Colton (1 episode)
Adrian Moore (5 episodes)
Mikhail Ominsky (1 episode)
Beau Van Hessche (1 episode)
Sweet Young Sailor (1 episode)
Mike (uncredited)
James Bass (1 episode)
Harvard Student (uncredited)