Portraits reflecting roles

Kaitlin Olson, Charlie Day, Rob McElhenney and Glenn Howerton are the main characters (along with Danny Devito) in the hit show Always Sunny in Philadelphia. Their portrait isn’t about them, but the characters they play, moods they evoke, and how they interact. The location (a bar which is also the main scene in their show) is important as part of the story, but even more important is their interaction with each other.