JB Williams is a fictional character portrayed by Dre Marquis in the TV series Chicago Fire.
In the first episode they appeared in, titled Telling Her Goodbye (season 5), they were 25 years old.
They appear in 1 episodes out of a total of 252 aired so far
Episodes1
Telling Her Goodbye
episode S5.E16 march 2017Firehouse 51 is taken over by local gangsters.