This older man is serving as the link between generations. His dress of choice does not fit in with the scene. I wanted that grandfatherly figure putting the final touch into their ensembles.
Erik is posing in similar fashion as a substitution. I find it is better to have actual reference on hand for key players in a scene. The color study is a good guide to harmony and pattern in the larger piece.
This color comp was a great help on the last big painting: