Gilbert McCauley / ... 10 episodes, 2014-2017
Steve Tanner (35 episodes, 2009-2012)
Gary Moore (1 episode, 2013)
Gerald Brady (1 episode, 2015)
Doug Baker (1 episode, 2007)
Young Dennis Ambaucher (1 episode, 2007)
Sebastian Balfour (4 episodes, 2005)
Matt Hudson / ... (2 episodes, 2002-2009)
Ezra Standish (22 episodes, 1998-2000)
Kip Richmond, Jack's Brother (4 episodes, 1996-1997)
Dr. Craig (2 episodes, 2008)
Olaf Brackman (1 episode, 1993)
Tommy Byrd (unknown episodes)