The cast of “Justified” has just gained one magnificent mustache.

“Mask” star Sam Elliott has signed on for the FX drama, which is slated to premiere its sixth and final season in January.

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Elliott will play Markham, a legendary Kentucky gangster who returns from exile with a private army and bags of cash (earned growing legal weed in Colorado), hell-bent on winning back his empire and the lost love of his life, Katherine Hale (Mary Steenburgen). Markham finds himself butting heads with Raylan (series star Timothy Olyphant) and Boyd (Walton Goggins) and even with Katherine herself, who secretly believes that Markham is the rat who brought down her husband.

Also read: ‘Justified’ Showrunner Explains Decision to End Show, Cast Pays Tribute to Elmore Leonard

The series has also cast “Raising Hope” actor Garret Dillahunt for its final season. Dillahunt will play Walker, a spec ops veteran who’s spent much of the last decade deployed in combat zones, first as a soldier and most recently as a private contractor. He now handles security for a quasi-legal businessman, a job to which he brings all of the skills (as well as the demons) he acquired during his military career. Walker hides his simmering rage behind an exterior of cold professionalism — until the combined irritants of Raylan and Boyd wear away his veneer and bring the monster to the surface.

“Justified,” based on Elmore Leonard‘s novella “Fire in the Hole,” stars Timothy Olyphant as Deputy U.S. Marshal Raylan Givens, a lawman who finds himself drawn back to his home state of Kentucky.