The cast of Chicago Fire Season 13 is getting bigger. A few more faces are entering Firehouse 51 and joining the already-established Season 12 regulars. And not content with that, they have also promoted a familiar face to series regular for Season 13.

As Chicago Fire enters a new season, significant changes are on the horizon as the series welcomes a new chief at Firehouse 51. With Eamonn Walker’s beloved character, Chief Wallace Boden, stepping down after 12 seasons,

This story contains mild spoilers from the season 13 premiere of Chicago Fire, “A Monster In the Field.”] Change doesn't come easy, as audience members witnessed during Wednesday’s season 13 premiere of NBC's consistent hit series Chicago Fire.

The new chief made quite during the season 13 premiere of 'Chicago Fire,' leading many to want to learn more about the actor behind the character.