Nick Searcy as Art Mullen | Justified on FX
Justified
Nick Searcy
Art Mullen

Raylan's boss and old friend in the Lexington office, Chief Deputy Art Mullen often indulges Raylan's effective but reckless methods. The deputies look to Art for guidance, a father figure who's tough but supportive. This season finds Art recuperating from a life-threatening gunshot wound - a wound he received towards the end of Season 5 while defending Raylan's then girlfriend. He now wonders if this might spell the end of his Marshals Service career.