This may take some poking around at IMDb and similar sites, but after the main characters have been accounted for in the cast list or credits of your regular TV shows, who are the ones you count on for consistent quality?
A few examples of my choices ought to make it easier to decide the category I’m talking about.
-- Kim Coates ... Alex 'Tig' Trager (82 episodes, 2008-2013) -- Tim Kang ... Kimball Cho (129 episodes, 2008-2014) -- Archie Panjabi ... Kalinda Sharma (102 episodes, 2009-2014) -- Jacob Pitts ... Deputy U.S. Marshal Tim Gutterson (60 episodes, 2010-2014) -- T.J. Thyne ... Dr. Jack Hodgins (179 episodes, 2005-2014) -- Michael K. Williams ... Chalky White (48 episodes, 2010-2013) -- Olivia Munn ... Sloan Sabbith (19 episodes, 2012-2013)
Put a different way, when you start watching a favorite show, other than the lead players, who is it you’re hoping will show up in the episode because you really like their work or just the character itself?
And, yes, I have asked similar questions in earlier threads but I figured I’d start a new one instead of poking a zombie.