he rocked a completely different look while playing Gavin Mitchell on Friends. WATCH: Have you seen in Dermot Mulroney in Anyone But You? The actor, now 61, played the spiky-haired, suit-wearing ...

Dermot Mulroney as Chief Dom Pascal in Season 13 of "Chicago Fire" Dermot Mulroney: Well, I didn’t know that they were looking for an actor to replace Chief Boden, so other people knew about that.

EXCLUSIVE: Deadline can reveal first look images of Western Long Shadows, starring Dermot Mulroney (Anyone But You), Jacqueline Bisset (Bullitt), and Dominic Monaghan (The Lord of the Rings).