Spoilers will be unmarked for Seasons 1 and 2. Spoilers will be hidden for Season 3.
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Fire Station 118
Current Members
Captain Robert Bobby Nash
Captain Robert Bobby Nash

Profession: Firefighter
Played By: Peter Krause
Appearances: 9-1-1
LAFD Captain. Is a recovering alcoholic, with a very dark and troubled past. Dating Athena as of the start of Season 2, and married her at the end of Season 2.- The Atoner: He was responsible for the apartment fire that killed his family and many other residents. Originally, he intended to kill himself once he'd saved as many people as had died in the fire, but is later convinced out of it.
- Balancing Death's Books: Was attempting to save the same number of people as died in an apartment fire he was responsible for before killing himself. He has moved on from this plan.
- The Captain:
- Confessional: He is seen going to confessional regularly.
- Dark and Troubled Past
- Experienced Protagonist: Has a very long career as a firefighter.
- A Father to His Men: Deeply involved in taking care of his squad, and even cooks for them.
- Happily Married: To Athena.
- The Lost Lenore: His children, sadly.
- Minnesota Nice: Originally from the Twin Cities and one of the nicest people in the cast.
- Official Couple: With Athena, as of "Under Pressure" they have been dating for 4 months. As of "This Life We Choose" they get married.
- Outliving One's Offspring: In "" it is revealed that his children, Brook and Robert Jr, were killed in a house fire.
- Parental Substitute: Buck calls him pops and he calls Buck Son.
- Real Men Cook: He's a very talented chef, much to the appreciation of his unit.
- Reasonable Authority Figure:
- Relationship Upgrade:
- Him and Athena become an item in A Whole New You.
- They then get married in This Life We Choose.
- Ship Tease: Between him and Athena.
- Team Dad:
- Token Religious Teammate: Out of his unit, he is the only one with expressed faith, specifically he is a practicing Catholic.
Howie "Chimney" Han
Howie "Chimney" Han

Profession: Firefighter / Paramedic
Played By: Kenneth Choi
Appearances: 9-1-1
Firefighter/Paramedic. After suffering an accident in episode 3, he's trying to figure out what to do now in his life.- Heterosexual Life-Partners: With Hen.
- I Let Gwen Stacy Die: He and his best friend Kevin joined the fire department together. Kevin dies saving a pregnant woman during a fire while Howie is standing a few feet away. Howie is traumatized and feels Survivor Guilt because he could have done what Kevin did but he hesitated so Kevin died instead of him.
- Impaled with Extreme Prejudice: He's impaled through the skull in a car accident, but survives by some miracle.
- Inferiority Superiority Complex: He fears that he isn't as heroic as the others, leading him to make up stories to impress his girlfriend.
- Jumped at the Call: When the karaoke bar he worked at caught fire, Chim snapped into action, evacuating the building and putting out a woman on fire. He applied to the LAFD before he even went home.
- The Medic: Is a trained paramedic.
- Relationship Upgrade: Starts dating Maddie in "This Life We Choose".
- Scars Are Forever: He has a distinct scar on his forehead from his accident.
- Ship Tease: With Maddie. They click as friends almost immediately, and sing bad karaoke together. They start dating.
Henrietta "Hen" Wilson
Henrietta "Hen" Wilson

Profession: Firefighter / Paramedic
Played By: Aisha Hinds
Appearances: 9-1-1
Firefighter/Paramedic. Athena's best friend, and lesbian wife with an adopted child.- Bald Woman: What It Says On The Tin
- Big Beautiful Woman: A heavier-built woman that is treated as desirable and gets love scenes.
- Dark and Troubled Past: Her dad walked out at 9, she was shot at 16, and it's implied her mother reacted poorly to Hen's coming out.
- Friend to All Living Things: Very compassionate to any animals they come across, and ensures they're treated as well as their human patients.
- Happily Married: To Karen.
- Mama Bear: Do not threaten her family.
- Meaningful Name: Hen is both an animal lover, and a serious mother hen to friends and patients alike.
- The Medic: Is a trained paramedic.
- My God, What Have I Done?: At the end of "Malfunction", Hen goes into a complete breakdown, babbling and sobbing and collapsing in Athena's arms, when she realizes that the young woman whose car she'd accidentally struck with the ambulance has died on the scene.
- Platonic Life-Partners: With Athena. And Chimney to an extent as well.
- Sex with the Ex: Has sex with her ex-girlfriend, Eva Mathis, in "Full Moon (Creepy AF)"
- Twofer Token Minority: She's an African-American lesbian.
Evan "Buck" Buckley
Evan "Buck" Buckley

Profession: Firefighter
Played By: Oliver Stark
Appearances: 9-1-1
Firefighter. A reckless rookie, but does the job down. Also a huge Casanova.- Affectionate Nickname: "Buckaroo" in moments of closeness, with everyone.
- Age-Gap Romance: Has one with Abby in the first season. Shes sixteen years older than he is, but for a while they made it work.
- Ambiguously Bi: Definitely into women, but his relationship with Eddie is full of chemistry. He also never denies other's loaded comments, from his sister's teasing to an elf complimenting "their" son. When Josh jokingly acusses Maddie and Chimney of setting him and Buck up on a date, neither Maddie or Buck use the excuse the Buck is straight as a reason not to. TK also assumes that he was hitting on him during the crossover.
- The Baby of the Bunch: Is the youngest of the 118 crew.
- Big Little Brother: He is nearly a head taller than Maddie.
- Character Development: His time with Abby made him more interested in meaningful relationships.
- He also gets more mature even over the course of the first season, while still keeping his hotheadedness. For example, when a crowd of gawkers gathers outside the trailer of the dead man who used Buck's identity online, Buck demands the coroner take the time to drain the body, allowing the man to pass with some dignity.
- The Determinator: When he is injured in the line of duty, they tell him that he may not be able to be a firefighter anymore and decide once he recovers he will be put at a desk job. He is determined to get his old job back after this, even to the point of suing the city, the department, and even Bobby for wrongful termination. Eventually he gets his wish.Buckley: I told you that I wouldn't stop fighting until I got my job back, and I won't. Even if it means fighting you.
- Fire-Forged Friends: With Eddie.
- Friend to All Children: Kids hold a special place in his heart.
- Hair of Gold, Heart of Gold: Athena calls him this by name.
- Heroic BSoD: After he loses his first patient on the second episode of the first season.
- Hero-Worshipper: Has shades of this towards Bobby.
- Hidden Depths: Buck went through SEAL trials before the series started, but dropped out and became a firefighter because he wanted a dangerous, adrenaline-filled job that allowed him to help people instead of harm them. He also tended bar in South America and knows how to deal with tapeworms.
- Inferiority Superiority Complex: It's painfully clear that Buck's entire sense of self-worth is tied to his work as a firefighter.
- I Will Wait for You: In the second season, he's determined to keep waiting for Abby to return. He eventually decides to move on during "Haunted".
- Instant Drama, Just Add Tracheotomy: Abby performs one on him in Heartbreaker after he chokes on their Valentine's dinner date.
- Ladykiller in Love: Settles down once he begins to fall for Abby, and is hesitant to become intimate out of fear it will ruin things between them.
- Lovable Sex Maniac: Deconstructed. While well-liked by everyone, his antics end up crossing the line into unprofessional and nearly costs him his job. It serves as a wake-up call that he needs to address his problem.
- Married to the Job: As pointed out after his injury, Buck has no life outside the firehouse. No hobbies, no other friends, even his relationship with Abby is tied back to his job.
- Mistaken for Gay: With Eddie
- Mr. Fanservice: Has numerous shirtless scenes throughout the show.
- Mysterious Past: Pretty much nothing is known about Buck's past, and the few details we do have— estranged from his family, entered SEAL trials but dropped out, backpacked internationally— plus some behaviors such as complete pop culture ignorance and a quiet but noticeable refusal to discuss his past, only serve to raise more questions.
- Real Men Cook: He's becoming this, with help from Bobby.
- Rescue Romance: He enters two. Neither works out.
- Sex Addiction: Is self-diagnosed to be suffering from this.
- Unnamed Parent: His and Maddies parents havent been named as of yet.
Edmundo "Eddie" Diaz
Edmundo "Eddie" Diaz

Profession: Firefighter
Played By: Ryan Guzman
Appearances: 9-1-1
A new firefighter introduced in Season 2. A single parent of a young boy.- The Ace:
- Action Dad: Is a firefighter and a single dad.
- Action Hero: He is a trained firefighter and has done multiple tours in Afghanistan a Combat Medic.
- Always Someone Better: Buck initially can't stand him, because Eddie seems to be better than he is in every way.
- Brutal Honesty: Eddie does not sugarcoat anything to anyone.
- Combat Medic: He served as one, prior to leaving the military.
- Experienced Protagonist:
- Good Parents: He's an excellent father and does everything he can to spend time with Christopher.
- Latin Lover: Averted. He's extremely handsome and quickly earns the attention of women, but makes it clear he's not interested. This is because he's still in love with his estranged wife.
- The Medic: Is a trained paramedic.
- New Meat: Is the new recruit in the Season 2 opener episode "Under Pressure"
- Papa Wolf: Fiercely protective of his son, Christopher.
- Sex with the Ex: Starts sleeping with his estranged wife after he tracks her down.
- Struggling Single Parent: He is raising his son alone, and often struggles to find childcare.
- Tall, Dark, and Handsome
- Tough Love: Leans towards this, especially with Buck after his blood clots prevent him from returning to duty.
Former Members
Lena Bosko
Lena Bosko

Profession: Firefighter
Played By: Ronda Rousey
Appearances: 9-1-1
Lena Bosko is a firefighter with Station 136 with the Los Angeles Fire Department. She was recently temporarily assigned to Station 118 after her team was injured during the tsunami.
Captain Vincent Gerrard
Captain Vincent Gerrard
Profession: Firefighter
Played By: Brian Thompson
Appearances 9-1-1
The previous LAFD captain, who was transferred out for his sexist behavior towards Hen.
Tommy Kinard
Tommy Kinard
Profession: Firefighter
Played By: Lou Ferrigno Jr.
Appearances: 9-1-1
A firefighter who worked at the station prior to the series.
LAPD
Police Sergeant Athena Grant
Police Sergeant Athena Grant

Profession: Police Sergeant
Played By: Angela Bassett
Appearances: 9-1-1
LAPD Sergeant. Trying to figure out what's best for her family after her husband reveals he's gay.- Amicably Divorced: Divorced her husband of 14 years in Karma's a Bitch, but they remain close friends.
- Amicable Exes: Athena and her ex-husband Michael become this almost immediately after their divorce. Michael encourages her relationship with Bobby, and Athena grows to like Michael's boyfriend Glen, bonding with him over dinner.
- The Beard: She is unknowingly this for her husband.
- Deadpan Snarker: How she handles her job as a cop, and often has to deal with stupid people.
- Incompatible Orientation: The reason she and Micheal got a divorce. He was gay.
- Mama Bear: She won't tolerate anyone hurting her family, and is willing to use her authority as a police officer to protect them.
- Meaningful Name: She absolutely fits her namesake, the Greek goddess of Wisdom and War.
- Invoked when Hen warns Bobby about Athena's mother.
- Official Couple: With Bobby, as of "Under Pressure" they have been dating for 4 months. As of "This Life We Choose" they get married.
- Reasonable Authority Figure:
- Relationship Upgrade:
- Her and Bobby become an item in A Whole New You.
- They then get married in This Life We Choose.
- Ship Tease: Between her and Bobby
Captain Elaine Maynard
Captain Elaine Maynard
Profession: Police Captain
Played By: Claudia Christian
Appearances: 9-1-1
Athena's direct superior.
911 Operators
Current Operators
Maddie Buckley
Maddie Buckley

Profession: 911 Operator
Played By: Jennifer Love Hewitt
Appearances: 9-1-1
The new main 911 operator as of Season 2. Buck's older sister.- Dark and Troubled Past: Was married to an abusive husband.
- Domestic Abuse: She moved to LA to get away from her abusive husband, who had promised to kill her when she left him.
- Hospital Hottie: She was a nurse before moving to LA.
- Properly Paranoid: She is utterly terrified that her husband will break into her new apartment and kill her to the point she can't sleep some nights. And what's worst, he's finally found out where she's living in Merry Ex-Mas.
- Relationship Upgrade: Her and Chimney get together in .
- Ship Tease: She has a crush on Chimney, as shown in Dosed.
- Shrinking Violet: She is a trained nurse, but didn't want to work with people when she came to LA. Somewhat justified, since she doesn't want to deal with her abusive husband.
- Unnamed Parent: Her and Bucks parents havent been named as of yet.
Josh Russo
Josh Russo
Profession: 911 Operator
Played By: Bryan Safi
Appearances: 9-1-1
- Gay Best Friend: To Maddie.
Former Operators
Abigail Abby Clark
Abigail Abby Clark

Profession: 911 Operator
Played By: Connie Britton
Appearances: 9-1-1
911 operator of Season 1. A 42 year old woman trying to take care of her mother. She later befriends and starts dating Buck after he helps in a call during the Pilot.- Age-Gap Romance: Has one with Abby in the first season. Shes sixteen years older than he is, but for a while they made it work.
- The Caretaker: Is this to her mother.
- Deadpan Snarker: Has her moments, like this comment after her first date with Buck went wrong when he started choking on bread:Abby: It was all going great till I had to cut a hole in his throat.
- The Dutiful Son: She takes care of her Alzheimer's-stricken mother at the expense of herself.
- Meganekko
- Put on a Bus: Leaves for Europe at the end of Season 1, following her mother's death.
- The Bus Came Back: Returns at the end of Season 3 with a new fiancé, and manages to get closure with Buck.
Gloria Wagner
Gloria Wagner

Profession: 911 Operator
Played By: Christine Estabrook
Appearances: 9-1-1
A 911 operator that takes Maddie under her wing, when she first arrives.- Amicably Divorced: Averted. She is very bitter that her husband left her for her sister.
- Beneath the Mask: Gloria puts out a friendly and welcoming front, but underneath that she is a bitter old woman, who hangs up on people calling for help.
- Bitch in Sheep's Clothing: Maddie's coworker Gloria seems to have it all figured out. Even offers her a muffin. Then we see her slowly begin to reject call after call with rude, insensitive, and even racist remarks.Gloria: If you were really going to jump, I doubt you'd be calling me.
- Broken Pedestal: She is this to Maddie. Maddie really thought that Gloria was someone to look up to, as she had been in the 911 operator job for years and seemed to have it all figured out, but her true colours are shown when her previous recorded calls are heard and Gloria is heard being rude, insensitive and even racist to people calling for help.
- Firing Day: Is fired in Awful People and could be facing jail time for interfering with emergency calls. Is a
- One-Shot Character: Averted, as she returns later in the season in "This Life We Choose".
- The Mentor: It looked like Gloria was going to be this for Maddie, showing her to balance the stress of their work with living life. But that is not the case by the end of the episode.
- Tragic Villain: She qualifies as this, as it's heavily implied that she was a good operator at one point. But that all changed eight months prior to "Awful People" when, on the same day her husband had served her with divorce papers, she had to deal with a very bad "dead-end call" (a 9-1-1 call in which the caller inevitably dies no matter what the operator does to help); in this case, the caller's workplace was being shot up by a disgruntled ex-client, and Gloria, upon hearing the gunshots getting closer and unable to face the inevitable, cut off the call. From then on, hanging up on callers just became easier and easier for her, until she was exposed by Maddie and fired. After this, she begin harassing Maddie nonstop with calls and texts, even manipulating a 9-1-1 from her call to Maddie, until while doing this, she ends up in a car accident. Believing that she is going to die, she confesses the reasons behind her decline, and is surprised and touched when Maddie not only sends help for her, but stays on the line to listen and be there for her, even in spite of her actions. This ultimately leads to her...
- Took a Level in Kindness: By her second appearance in "This Life We Choose", it's revealed that she has taken a plea to avoid jail time, and she appears with along with many other callers that Maddie had helped in her time at the call center. Gloria reveals that by not hanging up on her following her accident despite Gloria previously harassing her over being fired, Maddie showed her how wrong she was to hang up on people, especially regarding the "dead-end calls", whom Gloria believed that there was nothing that could be done for. She admits that she now knows that there was something she could've done for them: listen to them and be there for them to the end, so that way they wouldn't have had to spend their last moments of life all alone.