Robert Wade "Bobby" Nash is a character on FOX's 9-1-1 who works as the Captain of Station 118 of the Los Angeles Fire Department. He debuts in the first episode of the first season of 9-1-1 and is portrayed by starring cast member Peter Krause.
Once a fire captain in the St. Paul Fire Department, Bobby relocated himself to Los Angeles after the devastating fire incident he inadvertently caused led to the deaths of his first wife and two children. His record was wiped clean, and he started over as captain of the 118, meeting his two closest crew members at the time, Hen and Chimney. He also met Athena at one of the first calls he responded to while working as a member of the LAFD. A few years later, they began dating and eventually got married.
Bobby grew up in Minnesota, and when he was in school, he took up figure skating, and with his partner, Heidi Shatsky, became Twin Cities Junior Pairs Champions three years running.
Losing His Family
Bobby injured his back while on duty and as a result, had to rely on pain medications, alcohol, and drugs in order to cope with the lingering pain. He became addicted to them and his addiction continued for years to come with him returning to rehab every occasion when his wife found out. His addictions were so intense that he would attend work high or drunk. He even kept a separate "drug den" apartment five floors below the one he had with his wife and children, where he would go to drink. On one of his trips to his apartment, he accidentally fell asleep. When he woke up, he realized how late it was and, in his rush, he forgot to turn off the space heater. As his wife had had enough of him for the night, he was then kicked out of their apartment without the keys to his apartment and resorted to sleeping on the roof. This was when the space heater sparked an ember and lit the nearby blanket in his drug den alight. This then spread quickly due to the many code violations in the building acting as an accelerant. By the time Bobby was woken up by the fire engine sirens, most of the apartment building was ablaze and he tried to go back to his apartment for his family, but the firefighters removed him from the scene for his own protection. His wife was taken to hospital where she was treated for severe burns; however, she succumbed to her injuries. His two children, Robert Jr. and Brook, died at the scene. Overall, 148 people died in the fire.
Moving to Los Angeles
As a result of all of these deaths, Bobby fell off the deep end until he eventually returned to rehab, and this time, he managed to get his habits under control. After six months of being sober, he asked the deputy fire chief to take him off desk duty and put him back in the field, as he can't atone for what he has done by riding a desk. While the chief believed that Bobby was ready, he didn't think that his fellow firefighters were ready to trust Bobby with their lives just yet. Bobby then asked to transfer him somewhere else, and he relocated to Los Angeles. The record of him accidentally setting fire to his apartment building in St. Paul was wiped clean in order for him to get a job at the Los Angeles Fire Department.
Working as the Captain of Station 118
On his first day as the Captain of Station 118, he met Hen and Chimney and found them placing bets with the rest of the crew on how long he would last as their captain, as they've had six captains in just two years. Bobby then put his money on the odds of him outlasting one or all of them and walked away. At one of the emergency calls he responded to on his first day, Bobby met Athena, whom he would later marry.
At the end of his first day, Bobby went to a bar and had a drink because he had a good day and didn't feel deserving of it. The next day, he went to church and gave away his AA chip to the priest because he lost his sobriety, but the priest told him to keep it and do his best to earn it back.
After Sal Deluca disobeyed his order at a scene, Bobby confronted him and then fired him in front of everyone when he refused to show respect for the chain of command. Later on, Bobby revealed to Hen that he didn't fire Sal Deluca, but rather just suspended him and then set up a transfer to another station. Hen was impressed with how Bobby handled the situation and invited him out for drinks with her, Chimney, and Tommy.
He confessed to the priest that he didn't want his fellow firefighters to know about his past, but taking the priest's advice to him about showing who he is to the team, Bobby started a new firehouse tradition: the team eating meals together. Bobby quickly bonded with the team and set out to be a good captain who is tough but fair.
Falling off the Wagon
Following a harrowing plane crash rescue where many people died, and he almost couldn't save someone, Bobby had a breakdown and went on a bender, ending his 546 days of sobriety. When he didn't show up at work the following day, Hen and Buck went to his apartment to check on him, and they found him passed out on his bed. After they got him up, Bobby promised them that it was a "one-time thing" and apologized. They then proceeded to tell him that it is okay to ask for help sometimes, and Bobby admitted he needed help.
Keeping his past a secret from the team at first because he did not want them doubting him as their leader, Bobby decided to open up to his team after his priest advised him to trust his friends and let them in if he cared about them.
When Chimney organized a blood drive at the station, Bobby refused to donate his blood, as he was afraid of needles. But after some urging from Chimney, Buck, and Hen, he decided to give blood and later received a call from the hospital asking to speak with him in person. Bobby assumed something was wrong, and later at church, he showed the priest his book in which he documented the names of everyone that he had been able to save on the job. The book had 148 spaces, one for each person he "killed" in the fire. He said the reason for his counting is so that he can end his life once he has saved enough people to balance out the lives he accidentally took in the fire. The priest reminded him that the Church is against suicide, but Bobby felt the need to make penance for his actions, and he was afraid he may now not live long enough to balance the book.
However, he later learned that he just had a rare type of blood that has the ability to cure pregnant women and their babies of rhesus disease. He viewed this as God's punishment because he was now obligated to stay alive and donate his blood for the rest of his life to save lives, but he couldn't save his own children. Chimney convinced him that it's not a curse, but rather a blessing that he is able to save thousands of babies and helped him realize that he no longer needs to keep his book of names, as he will save far more people than the 148 lives that were lost in the fire.
Relationship with Athena
Bobby decided to start dating again and set up an online dating profile after his sponsor suggested him that dating would help him get back out into the world again. Shortly after this, the team got called in for an emergency where a motorcycle accident split the man involved into two pieces. After listening to the man speak to his son on the phone for the last time, Bobby got flustered by the sight of it and left the scene to compose himself. Athena, who was also on the scene, came to comfort him and Bobby asked her to go to church with him after she asked him how she could help.
Afterward, they went to church together. At church, they reflected on their lives and prayed together. Later on, they went on their first date and then began dating in secret. After four months of keeping their relationship a secret from everyone else, Bobby wanted to go public with their relationship, but Athena refused out of embarrassment because she was ashamed of being happy after her divorce. They had an argument, but after having a conversation with Michael, Athena came to the firehouse to apologize to Bobby and revealed their relationship to the 118 team by kissing him.
When a tray of brownies was sent over to the station, the crew including Bobby, ate them, not knowing that the brownies were laced with LSD. Later, while out on a call, it became apparent that everyone, except Chimney, was high off those brownies. Bobby, who stayed behind at the station, was also high and started talking about his deceased daughter to Taylor Kelly, who was there making a report of the station. By the time Athena got to the station, Bobby was on the roof, hallucinating his daughter, Brook. Bobby said he could see Brook, a bright light floating in the sky, and wanted to float away with her, but Athena eventually could talk him down from the ledge.
The incident wrecked his sobriety, and Bobby struggled with it because he went from being sober for a while, to now only a few days. He admitted to Athena that he wanted to get high again because it felt good and made him feel free from all the pain he was carrying. Athena then reminded him that she was there for him and that he should stop trying to carry it all alone.
Proposing to Athena
After a few months of dating, Athena asked Bobby to move in, as she was ready to take the next step in their relationship. Upon being asked, Bobby was taken aback, but after taking a moment, he later proposed to her instead and she happily accepted.
Shortly after they got engaged, Athena's parents paid a visit to their daughter and Bobby met them for the first time. Athena's mother, Beatrice, was not supportive of their plans to get married. She also got mad at Bobby when he attempted to act like a stepdad to her grandchildren, bringing up his past and telling him that Athena's children are not his "consolation prize". She reluctantly apologized to Bobby after Athena told her to, and then got angry at Athena for not telling her things including being engaged to Bobby and May’s suicide attempt. She continued to accuse Athena of making decisions without considering the consequences, and Bobby stepped in to defend Athena after she said that it's a miracle her two kids are alive. Before leaving, Beatrice tried to smooth things over with Athena, but still insisted that she was making a "terrible mistake" by marrying Bobby.
Suspension and Reinstatement
Following the bank heist, an investigation into Bobby’s past opened up and he got temporarily suspended from his duties at the 118 for lying about what happened in Minnesota when he first joined the LAFD. While he was under investigation, Chimney became the interim captain and Bobby spent his time planning his and Athena's wedding.
After Athena was targeted by a serial bomber, she and Bobby figured out who was behind the bombings. They linked all the victims together, and realized that Freddie Costas, the son of the man who committed arson about three years ago, was now seeking revenge on those responsible for putting his now deceased father in jail, with the prime target being Bobby. It was from the first case they ever worked together. They suspected that Bobby was the next one to receive a mail bomb, but when they checked his apartment, they found nothing. Before they could warn those at the fire station, the 118 was already out on a call and the ladder truck exploded on the way, crashing Buck's leg. When Bobby arrived on the scene, he saw that Freddie had a bomb strapped to his chest, demanding to see him. Bobby then walked right up to Freddie to confront him, and when Freddie got distracted by his mother, Bobby quickly grabbed him and gained control of the bomb detonator. The police then took Freddie and the bystanders came in to help Buck, who was trapped under the firetruck.
Because of his heroism on the scene, Bobby's suspension got lifted and he was reinstated as the captain of the 118. After things calmed down, Bobby and Athena decided to elope, and they got married at the courthouse with May and Harry present.
After losing his family, Bobby became closed off and withdrawn, but, over time, he bonded with his team and became more open and warmer. Bobby is shown as caring, decisive, calm, and levelheaded. He is usually quiet and keeps to himself, although in front of his friends and family, he is shown to be witty and a good sport. Despite his more introverted personality, he is seen as a fatherly figure within the firehouse and most of his crew have all come to him for advice at some point.
Bobby and Marcy were married until her death. They lived in St. Paul, Minnesota, and had two children together. After Marcy and their two children died in the fire that he unintentionally caused, he moved to Los Angeles to start over.
Bobby first met Athena at one of the first emergency calls he responded to as captain of the 118 after moving to Los Angeles. At the call, he handed Athena a rooster named Maurice after she asked for the assailant who stabbed the victim. They met again when the 118 responded to a fire caused at a restaurant, where Athena was also responding. They then ended up working together on the case and figured out the fire incident was actually arson. 
Having to work together often because of their professions, they got acquainted and through Hen, they all became friends. The two of them didn't get romantically involved until after Athena had divorced Michael and Bobby decided to start dating again. Bobby initially asked Athena to go to church with him when Athena asked him what she could do to help him through the day after they both had just witnessed a man die in an accident. They went to church together afterward and eventually went out on a date. 
After four months of keeping their relationship a secret, Bobby wanted to go public with their relationship but Athena refused because she didn't want to be embarrassed if their relationship didn't work out. That caused a rift between them but after talking with Michael, Athena came to the firehouse to apologize to Bobby and revealed their relationship to the other members of the 118 by kissing him in front of them. 
The two continued dating and after some time, Athena asked Bobby to move in as an attempt to take the next step in their relationship. That took Bobby by surprise, and Athena thought that she scared him off. After taking a moment, Bobby came back to Athena on Christmas Eve and instead of agreeing to move in with her, he proposed to her; saying that he didn't want to take the next step but wanted to take every step with her for the rest of their lives. Athena happily accepted his proposal and they became engaged. 
They started to plan their wedding after Bobby got temporarily suspended from his duties at the 118 but after the events of the serial bomber, he realized that, with both of them having dangerous jobs, there is no day but today, so he asked Athena to wait no more to get married. They then went to a courthouse with May and Harry and got married. 
- Bobby is from Minnesota, the same state where his actor, Peter Krause, is from.
- He started going to sleepaway camp when he was eight and looked forward to it every year.
- He is Catholic.
- He has a huge phobia of needles.
- Ironically, his blood has a unique makeup which can be used to treat pregnant women and their fetuses with rhesus disease.
- In "A Whole New You", Bobby's Romance The Uniform page reveals that Bobby's:
- Favorite color is red
- Favorite dessert is flan
- 52 years old
- A great cook
- Favorite book is The Da Vinci Code
- Favorite show is Friends
- Favorite movie is Highlander
- Favorite band is ELO
- Favorite singer is Celine Dion
- Favorite actor is Michael C. Hall
- He does not like to travel
- He enjoys taking walks in the rain
- He and Buck once went to see a Bruce Springsteen's concert together.
- Bobby has appeared in every episode in the series so far except for Hen Begins and Chimney Begins, where he was shown only in flashbacks.
- He has mentioned that he has a brother.
- His favorite subject is science.
- He has been a firefighter for almost three decades.
- He's afraid of spiders.
|"Pilot"||"Let Go"||"Next of Kin"||"Worst Day Ever"||"Point of Origin"|
|"Heartbreaker"||"Full Moon (Creepy AF)"||"Karma's a Bitch"||"Trapped"||"A Whole New You"|
* denotes archive footage only appearance.
|"The New Abnormal"||"Alone Together"||"Future Tense"||"9-1-1, What's Your Grievance?"||"Buck Begins"|
|"Jinx"||"There Goes the Neighborhood"||"Breaking Point"||"Blindsided"||"Parenthood"|
|"First Responders"||"Treasure Hunt"||"Suspicion"||"Survivors"|