Sergei Zelenkov 6 episodes, 2015
Reverend Slattery 3 episodes, 2017
Rene Le Bron (1 episode, 2016)
Jonathan Bloom (2 episodes, 2015)
Horton Baker (1 episode, 2012)
Jack Rexton (1 episode, 2007)
Richard Clay 10 episodes, 2021
Colonel Stanley Parker 1 episode, 2018
Father Luke 1 episode, 2020