A New Face Joins the Firehouse

When Chicago Fire returns on January 7, 2026, fans can expect more than just high-stakes rescues and emotional twists. A new character is entering the fray—one who could shake things up within the Chicago Fire Department in a major way.

Behind-the-scenes photos shared by series star Dermot Mulroney sparked speculation this week. The image, posted on Instagram Stories, featured Mulroney alongside Miranda Rae Mayo, Joe Minoso, Hanako Greensmith, and David Eigenberg. But one detail stood out: actor Max Martini was also on set, wearing a Deputy District Chief jacket.

Who Is Max Martini Playing?

Martini, known for his roles in The Unit and 13 Hours: The Secret Soldiers of Benghazi, appears to be taking on the role of a newly introduced Deputy District Chief. While NBC has yet to confirm details about his character—including his name and whether he’s a guest or recurring—his arrival suggests a significant new thread in the unfolding drama of season 14.

Ally or Antagonist?

So far, Battalion Chief Dom Pascal (played by Mulroney) has been navigating serious challenges, including looming budget cuts and pressure from city officials. Could Martini’s character be an ally in Pascal’s battle to protect Firehouse 51?

It’s possible. With Pascal already building rapport with the mayor’s chief of staff, Annette Davis, he may need additional allies inside the department. Martini’s Deputy District Chief might serve as a strategic partner in those fights.

But fans know Chicago Fire rarely introduces a new authority figure without some tension. There’s a strong chance that Martini’s character could become an obstacle—especially if he arrives with his own agenda or strict leadership style.

When Will He Appear?

While an exact debut episode hasn’t been confirmed, all signs point to Martini making his entrance shortly after the mid-season premiere. Season 14 resumes January 7, so viewers should keep an eye out for his first appearance within the first few episodes.

With Firehouse 51 already under pressure, the introduction of a high-ranking new character could trigger major shifts in the power dynamics—and test loyalties across the board.