Soon after, Rome Flynn was brought in to replace Rosende’s character,

Gallo. Flynn left after six episodes, and the reason was never revealed.

It’s unclear whether the character will return in Season 13, but given that

Flynn is set to appear in the upcoming season of Godfather of Harlem in a significant role, it seems unlikely. Kara Killmer left the show after a decade on it; the void left by her character was filled by her coworker. That still left a space in Ambulance 61 that Jocelyn Huddon was cast to fill. Hudon is expected to appear in the upcoming season as Paramedic Novak.

Michael Bradway was cast to fill the spot left by Flynn. He is expected to have a significant arc in the coming season after it was revealed that his character is related to someone in the firehouse. Other minor characters joined the cast in the season, including Paramedic Lennox (Wesam Keesh) and Dwayne Morris (Samuel B. Jackson), Ritter’s secret boyfriend. It is unclear if the characters will appear in the upcoming season.

Chicago Fire and the rest of One Chicago return this fall on NBC.