The One Chicago franchise is home to a large cast of characters spread over the three series. A great aspect of the series is how often the characters cross over to all three series. This consistent crossover nature allows for the franchise to feel more fleshed out and dimensional compared to other franchises that have less crossovers. The characters in the One Chicago franchise are an essential part of the longevity of this franchise.
10. S. Epatha Merkerson as Dr. Sharon Goodwin Brings Calm to a Hectic Series




| Series | Chicago Med |
|---|---|
| First Franchise Appearance | Chicago Fire Season 3, Episode 19, “I am the Apocalypse” |
| Fact | Former Emergency Department Charge Nurse |
Goodwin has faced many trials and tribulations during her time on Chicago Med. She has had to fight against special interest groups maligning the healthcare workers at the hospital as well as devastating health crises affecting her loved ones. Nevertheless, Sharon Goodwin shows up to work ready to put in her best effort to ensure that everyone at the hospital gets the care and resources they deserve. While she is undoubtedly a fantastic character, other characters’ storylines are more well-rounded and resonate throughout the overarching story longer than Goodwin’s.
9. Elias Koteas as Detective Alvin Olinsky Had Grit an Undeniable Cool Factor
| Series | Chicago P.D. |
|---|---|
| First Franchise Appearance | Chicago Fire, Season 2, Episode 9, “You Will Hurt Him” |
| Fact | Army Veteran in a Special Response Team Stationed in Italy |
Detective Alvin Olinksy is a veteran Chicago Detective who works alongside his old friend and partner, Sergeant Hank Voight. Olinksy is not afraid to color outside the lines in the interest of justice. He has this trait in common with Voight, but he is a much more composed character and is good at hiding his emotions and acts as a mentor figure to the younger team members while still ribbing them for their youthful traits.
8. Sophia Bush as Detective Erin Lindsay Brought Passion to Chicago P.D.
| Series | Chicago P.D. |
|---|---|
| First Franchise Appearance | Chicago Fire Season 2, Episode 8, “Rhymes With Shout” |
| Fact | Former foster child of Sergeant Hank Voight |
Detective Erin Lindsay made her mark on the early seasons of Chicago P.D. by bringing equal parts edge and emotional turmoil to every episode of Chicago P.D. She was raised in a difficult environment before being taken in by Hank Voight and his family as a child. This window into Hank Voight’s personal life gave Lindsay a unique understanding of this enigmatic man, which led to them developing a familial relationship.
7. David Eigenberg as Firefighter Christopher Herrmann is a Mentor Figure to Young Firefighters
| Series | Chicago Fire |
|---|---|
| First Franchise Appearance | Chicago Fire, Season 1, Episode 1, “Pilot” |
| Fact | Primary owner of the bar Molly’s where many members of the One Chicago franchise frequent |
Chicago Fire has a cast stacked with talent, and one of the brightest stars of the series is Christopher Herrmann. He is one of the veteran firefighters of Firehouse 51 and is one of the longest-serving characters in the series. Hermann has comedic elements to him, such as his entrepreneurial foibles, although one, a bar named Molly’s, introduced in Season 1, Episode 14, “A Little Taste,” proves successful. However, Herrmann’s more serious storylines are where this character shines.
6. Colin Donnell, as Dr. Connor Rhodes is a Covertly Complex Character
When Chicago Med debuted as the third series in the One Chicago franchise, Dr. Connor Rhodes was introduced as a member of the main cast. Rhodes has an air of mystery surrounding him as he is the newest addition to the hospital. He makes a dramatic entrance in Chicago Med, Season 1, Episode 1, “Derailed,” as a member of a train crash who stitches himself up and immediately gets to work treating the victims of the same disaster he was a part of.
5. Nick Gehlfuss as Dr. Will Halstead is Smart and Loyal
| Series | Chicago Med |
|---|---|
| First Franchise Appearance | Chicago P.D., Season 2, Episode 17, “Say Her Real Name” |
| Fact | Brother to Chicago P.D.‘s Detective Jay Halstead |
Dr. Will Halstead shares the best qualities of his brother Jay but expresses them in a new way. Will is also caring, smart, and loyal to others. While Jay is a bit more forward, Will tends to take a step back and look at things more practically. However, they both share a headstrong nature that can get them into trouble. Will is the primary character that was used to launch the new hit series Chicago Med in the backdoor pilot episode and was an instrumental aspect of the series’ success due to his relatable nature. Will was one of the best characters on Chicago Med, but his character development sometimes took a back seat and was substituted with repetitive romantic plotlines with Dr. Natalie Manning.
4. Jesse Lee Soffer as Detective Jay Halstead is Headstrong On and Off The Clock
Jesse Lee Soffer was introduced to viewers of the One Chicago Franchise under surprising circumstances in Chicago Fire. He was undercover as a criminal working alongside a gangster threatening and exploiting Herrmann, Dawson, Otis, and Cruz over the proceeds of Molly’s Bar. His undercover reveal and his chemistry with Gabi Dawson provided some shocking drama for the early episodes of Chicago Fire Season 2. Jay only grew as a character when he moved to the second series and was added to the One Chicago franchise, Chicago P.D.
3. Miranda Rae Mayo as Firefighter Stella Kidd is a True Leader
Stella Kidd was introduced in Season 4 of Chicago Fire and has been on the rise ever since. Kidd is one of the most popular characters of the series despite being a newer character compared to some of the other characters on the series who originated in the pilot. Kidd has risen through the ranks and is being mentored by Chief Boden, who has stated he sees great leadership potential in her. Her fiery personality and skills come together to make her both interesting and capable, which is the combination needed to stand out against an ensemble cast laden with big personalities.
2. Jason Beghe as Sergeant Hank Voight is an Incredibly Complex and Engrossing Character
| Series | Chicago P.D. |
|---|---|
| First Franchise Appearance | Chicago Fire, Season 1, Episode 3, “Professional Courtesy” |
| Fact | This character started out as an antagonist on Chicago Fire |
Sergeant Hank Voight has had one of the most interesting character arcs in the One Chicago franchise. Voight began as an antagonist on Chicago Fire who made an enemy of Firefighter Matt Casey after launching a harassment campaign on him and his loved ones after Casey refused to alter evidence from Voight’s son’s drunk driving incident, which resulted in a dangerous accident. Voight was eventually imprisoned before striking a deal with Internal Affairs, which led to his promotion to Sergeant and the formation of the Intelligence Unit that Chicago P.D. is based around.
1. Eamonn Walker as Chief Wallace Boden is a Leader and a Mentor




| Series | Chicago Fire |
|---|---|
| First Franchise Appearance | Chicago Fire, Season 1, Episode 1, “Pilot” |
| Fact | Former Navy SEAL |
Boden steps up for his people in more than just workplace matters. He supported his people through personal loss and heartbreak and was always there as a resource. In more wholesome moments, he could also be found supporting his people. Recently, he stepped up to walk Stella Kidd down the aisle in her wedding to Kelly Severide in Season 10, Season 22, “The Magnificent City of Chicago,” to which he was visibly emotional and honored to be asked. Boden is an incredibly well-rounded character who is not only the best character on Chicago Fire but also in the franchise overall.






