Before Gibson exited the series, Chicago Fire season 12 already lost Blake Gallo at the start of the year and Sylvie Brett, when she married Matt Casey and moved to Oregon. In fact, Flynn’s character was introduced as a new firefighter who was supposed to fill the void left by Gallo in Stella Kidd’s team. Previously working with Kylie Estevez in a different firehouse, Kelly Severide’s wife recruited Gibson after working with him and being impressed by his skills. He decided to leave Firehouse 51 after realizing that he needed to address some personal issues that were hampering his work.
While One Chicago isn’t new to losing team members, Flynn’s departure was particularly surprising for several reasons. He seemed to be settling in with the rest of Firehouse 51, which wasn’t an easy thing to do, considering how the squad is so tight-knit. Flynn’s relationship with Sam Carver was particularly interesting, as they both bonded over having similar experiences in the past. At some point, it seemed like the pair was being built as Chicago Fire’s new version of Severide and Casey. Unfortunately, Flynn left before the show could even do something substantial with their pairing.
Kidd may have found the permanent replacement for Gallo with Benny Severide’s secret son, Jack Damon. Since leaving, One Chicago has yet to bring up Gibson again, which is an indication that the show isn’t planning on bringing him back any time soon. That said, considering the manner of his exit, the door remains open for him to come back in Chicago Fire season 13.
