Dermot Mulroney, who joined the show in season 13, told NBC how the tight-knit cast quickly embraced him. “They, as a group, as a community, literally as a family, welcomed me with wide open arms,” he said.

The cast and their characters are close, but the set has been a family affair for some, like actor Christian Stolte, who plays Randall “Mouch” McHolland. Both of his daughters have appeared on Chicago Fire, with his eldest playing his daughter on the series.

 

 

Meanwhile, Stolte’s costars, Mulroney and David Eigenberg are also busy being fathers when they’re not putting out blazes on-screen.

In honor of Chicago Fire returning for season 14 on Oct. 1, here’s everything to know about the cast’s kids.

 

 

Mulroney has a son, Clyde, from his first marriage, to Catherine Keener. He also shares two daughters, Mabel and Sally, with his estranged wife, Prima Apollinaare.

 

 

Clyde has followed in his dad’s footsteps, working in Hollywood. According to his LinkedIn, he attended Northwestern University, where he majored in film studies.

 

 

Since then, he has been a crew member on various film projects, as a camera operator, director’s assistant and other roles.

While Mulroney emphasizes the arts in his children’s lives, he supports whatever they decide to pursue.

“I don’t expect anything of them – it’s hard enough for everyone just to get their homework done at night,” he told The Hollywood News in January 2016. “Let’s just get them through grade school, and then see.”