Christopher Herrmann

CHICAGO FIRE -- "All Kinds Of Crazy" Episode 13003 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: Peter Gordon/NBC)

Chicago Fire star weighs in on the possibility of Herrmann leaving Firehouse 51

We don't know what happened to Herrmann, but we know when he'll be back on Chicago Fire

Herrmann didn't take the captain's exam for the most realistic reason in Chicago Fire

What is Christopher Herrmann's rank going into Chicago Fire season 13?

CHICAGO FIRE -- "Light Things Up" Episode 819 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: Adrian Burrows/NBC)

Chicago Fire star reveals why Herrmann can't be Firehouse 51 chief

CHICAGO FIRE -- "Inside Man" Episode 12011 -- Pictured: (l-r) Joe Minoso as Joe Cruz, Hanako Greensmith as Violet Mikami, David Eigenberg as Christopher Herrmann, Miranda Rae Mayo as Stella Kidd -- (Photo by: Adrian Burrows/NBC)

Which Chicago Fire character has been at Firehouse 51 the longest?

CHICAGO FIRE -- "Red Flag" Episode 12007 -- Pictured: Miranda Rae Mayo as Stella Kidd -- (Photo by: Adrian S Burrows Sr/NBC)

All the Chicago Fire station commanders you need to know in season 13

CHICAGO FIRE -- "A White Knuckle Panic" Episode 915 -- Pictured: (l-r) David Eigenberg as Christopher Herrmann, Amy Morton as Trudy Platt, Christian Stolte as Randall “Mouch” McHolland, Taylor Kinney as Kelly Severide -- (Photo by: Adrian S. Burrows Sr./NBC)

Chicago Fire announces new 51 chief (and it's NOT Herrmann)

CHICAGO FIRE -- "Lift Each Other" Episode 507 -- Pictured: David Eigenberg as Christopher Hermann -- (Photo by: Matt Dinerstein/NBC)

Did Christopher Herrmann accept the chief position on Chicago Fire?

CHICAGO FIRE -- "Don't Hang Up" Episode 913 -- Pictured: (l-r) Joe Minoso as Joe Cruz, David Eigenberg as Christopher Herrmann, Hanako Greensmith as Violet, Christian Stolte as Randall “Mouch” McHolland -- (Photo by: Adrian S. Burrows Sr./NBC)

All the 51 promotions that happened in the Chicago Fire season 12 finale

CHICAGO FIRE -- "Port in the Storm" Episode 12006 -- Pictured: (l-r) Rome Flynn as Gibson, Jesse Spencer as Matt Casey -- (Photo by: Adrian S Burrows Sr/NBC)

4 Chicago Fire characters who could be leaving the 51 next

CHICAGO FIRE -- "Down Is Better" Episode 606 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire star talks Herrmann plans: "I guess I gotta pass the torch"

CHICAGO FIRE -- "A Chicago Welcome" Episode 813 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: Adrian Burrows/NBC)

Chicago Fire based Herrmann's hearing loss on star's real experience

CHICAGO FIRE -- "Call Me McHolland" Episode 12002 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: Adrian S Burrows Sr/NBC)

What's wrong with Herrmann on Chicago Fire? His symptoms explained

CHICAGO FIRE -- "Run Like Hell" Episode 1114 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: Adrian S Burrows Sr/NBC)

Chicago Fire season 12: Will David Eigenberg return as Herrmann?

CHICAGO MED -- "The Apple Doesn't Fall Far From the Teacher" Episode 804 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: George Burns Jr/NBC)

What’s next for Christopher Herrmann in Chicago Fire season 12?

CHICAGO FIRE -- "Damage Control" Episode 1115 -- Pictured: (l-r) Miranda Rae Mayo as Stella Kidd, Christian Stolte as Randy “Mouch” McHolland -- (Photo by: Adrian S Burrows Sr/NBC)

The 3 best (and 3 worst) Chicago Fire characters

CHICAGO FIRE -- "Red Waterfall" Episode 1122 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: Adrian S Burrows Sr/NBC)

Who is going to retire from Chicago Fire in season 12?

CHICAGO, IL - SEPTEMBER 10: David Eigenberg and Christian Stolte conduct a tour of the "Chicago Fire" set at the 2018 press day for "Chicago Fire", "Chicago PD", and "Chicago Med" on September 10, 2018 in Chicago, Illinois. (Photo by Timothy Hiatt/Getty Images)

Chicago Fire star talks Mouch’s death in season 12

CHICAGO FIRE -- "Headcount" Episode 1002 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: Adrian S. Burrows Sr./NBC)

How old is Christopher Herrmann on Chicago Fire?

CHICAGO, IL - SEPTEMBER 10: David Eigenberg attends the 2018 press day for "Chicago Fire", "Chicago PD", and "Chicago Med" on September 10, 2018 in Chicago, Illinois. (Photo by Timothy Hiatt/Getty Images)

David Eigenberg family: Who is the actor married to?

"Two Hundred" Episode 1005 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: Lori Allen/NBC)

How many kids does Herrmann have on Chicago Fire?

CHICAGO FIRE -- "Completely Shattered" Episode 1103 -- Pictured: (l-r) David Eigenberg as Christopher Herrmann, Daniel Kyri as Darren Ritter -- (Photo by: George Burns Jr/NBC)

3 Chicago Fire characters who might be cut in season 12

CHICAGO FIRE -- "Run Like Hell" Episode 1114 -- Pictured: (l-r) David Eigenberg as Christopher Herrmann, Alberto Rosende as Blake Gallo, Daniel Kyri as Darren Ritter -- (Photo by: Adrian S Burrows Sr/NBC)

Chicago Fire provides update on Cindy Herrmann cancer diagnosis

CHICAGO FIRE -- "Halfway To The Moon" Episode 1020 -- Pictured: Taylor Kinney as Kelly Severide -- (Photo by: Adrian S. Burrows Sr./NBC)

Has Severide appeared in the most One Chicago episodes?

CHICAGO MED -- "The Apple Doesn't Fall Far From the Teacher" Episode 804 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: George Burns Jr/NBC)

Chicago Fire boss hints at ‘rough road’ for Herrmann’s wife

CHICAGO FIRE -- "Completely Shattered" Episode 1103 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: George Burns Jr/NBC)

Is Herrmann going to leave Chicago Fire season 11?

CHICAGO FIRE -- "Hold on Tight" Episode 1101 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: Adrian S Burrows Sr/NBC)

Who plays Herrmann’s wife Cindy on Chicago Fire?