- "The time of vigilantes is coming to an end. Because how can you idolize someone hiding in the shadows who won't show his face? Who refuses to own up to his shortcomings and culpability? It's not a hero, it's a coward."
- —Samanda Watson to Oliver Queen[src]
Samanda Watson is a special agent of the F.B.I.; she investigated Oliver Queen, the mayor of Star City, regarding if he is the vigilante known as Green Arrow. When Oliver desperately needed help to take down Ricardo Diaz, she offered the FBI's support in exchange for Oliver confessing his secret and being sent to Slabside Maximum Security Prison.
Investigating Oliver Queen
After a photo of Oliver Queen was circulated by Channel-52 News depicting him dressed up as the Green Arrow, Watson arrives in Star City to investigate him for his alleged crimes. During the investigation, she interrogates the other members of Team Arrow, except for Curtis, whom she hadn't been able to reach. It is later revealed that she confronted Rene Ramirez, having discovered his identity as Wild Dog, and blackmailed him into agreeing to testify that Oliver is the Green Arrow. If he refused to testify then she threatened to bring him down and would prevent him from being reunited with his daughter.
During Thanksgiving, Watson arrests Oliver for the crimes that the Green Arrow had committed. Oliver was taken into custody in front of his son, William, and Oliver promised that once he was released he would sue her for malicious prosecution. Watson did not care because she believed that she had all the evidence she needed to lock him up for good. She tried to convince him to sign a confession, but he refused and demanded to see his son. She later attended Oliver's trial, which was postponed temporally. After Oliver announced that the Anti-Vigilante Bill had passed, Watson confronted him and told him that she was returning to Washington, but she would be back for Oliver's trial.
When Oliver's trial was moved up a week earlier, Watson was not present in court for unknown reasons. Ultimately, Oliver was acquitted of the allegations against him.
Aiding Team Arrow
Sometime later, after Oliver was running out of options on how to deal with Ricardo Diaz's hostile take-over of Star City, he was left no choice but to go to her. Watson agreed to help him take down Diaz, but it comes with a price, half of it being admitting he was the Green Arrow, which he did with very little hesitation.
After they agreed on a deal, Watson sent in a number of F.B.I. agents into Star City to assist Team Arrow. They first raided the main police precinct and took out and detained Diaz's men. After a few skirmishes, one that nearly killed Watson and Rene Ramirez in a bomb, Diaz contacted them and demanded Mayor Quentin Lance to order the F.B.I. out of town, or else he would kill Laurel. After Quentin seemingly betrayed Watson just so that he could be close to Laurel, Oliver told her that Lance had a pacemaker which could be tracked before he left. Felicity hacked into the frequency of the pacemaker and tracked him down to Diaz's safe house. After a fight ensued between the combine forces of Team Arrow and the F.B.I. against Diaz's men, they rescued Quentin and Laurel. They also retrieved intel from Diaz's personal thumb-drive which were detailed files on his entire operation, which included those on his payroll, enough intel to liberate the city from Diaz's grip.
After the mission and Quentin was in the hospital undergoing surgery from a gunshot wound he received from taking a shot for his daughter, Watson came to arrest Oliver for breaking the law and would be sent to super-max prison. However, just before she took Oliver away, Oliver, the rest of his team, Laurel, and a just-arrived Sara Lance received word from Dr. Schwartz that Quentin Lance died. Watson told Oliver that sadly this changes nothing, despite her feeling sorry for his loss and escorted Oliver out. After a last visit from Felicity Smoak and Oliver's son, William, Oliver with Watson held a press conference and Oliver told the world he was The Green Arrow and was going to jail. He told the city that others will carry on the fight for him in his absence. While that was going on, Diaz went into hiding with his new allies while, under Samanda's orders, the F.B.I. arrested all those on Diaz's payroll, thus freeing the city from Diaz's hold over it.
After which Watson took Oliver in and brought him to prison, completing her duties.
Chasing Ricardo Diaz
Five months later, even though she is fully blamed for putting Oliver in prison and started the anti-vigilante law in the first place. after Felicity failed to capture Ricardo Diaz with A.R.G.U.S.'s help, she goes to Agent Watson and demand she fulfill her end of the deal she made with Oliver to take down Diaz. Felicity even revealed to Watson how Diaz tried to kill her and William while in witness protection. Watson was alarmed when Felicity told her about the Longbow Hunters now being in Star City. Although Watson was sympathetic to Felicity and William, she still showed no guilt in sending Oliver to prison. Felicity then left not before comparing Oliver to Agent Watson by pointing out that Oliver spent the last six years fighting for Star City and it was not justice for Oliver to be in prison while Diaz was still on the loose. After Felicity left, Watson called a meeting with the SAC to inform him about Diaz being in Star City with the Longbow Hunters. The SAC believes Diaz is no longer dangerous since they took out his entire operation despite Watson arguing about how Diaz compromised an entire city of its government and police force. Watson then tried to convince the SAC again by revealing that Diaz tried to hack into the Center of Disease Control's computer network, but the SAC still refused believing that nobody can get into the C.D.C. without proper clearance. Much to Watson's dismay, the SAC refused to continue chasing Diaz and ordered Watson to focus on her other assignments while reminding her that he is still her superior.
Felicity later arranges for a meeting with Watson, Dinah Drake, and Rene at the S.C.P.D. precinct where Felicity convinces everyone to go off-book to catch Diaz at the C.D.C. by setting a trap for them there. Despite being a loyal FBI agent, Watson reluctantly agrees to it but insists that this be a one-time thing and that she would cancel the operation if something suspicious occurred. After Watson gave Felicity, Dinah, and Rene several FBI jackets, the four of them went to the C.D.C. where Watson caught Diaz in the act of stealing biological samples. Watson tried to stop Diaz from getting away but failed. The SAC eventually learns what happened and rather than revoking the immunity deal that the Bureau made with Team Arrow in exchange for Oliver's imprisonment, the SAC angrily reassigns Watson to a desk job in Washington since Watson had no clearance to be in the C.D.C. in the first place but still disobeyed. As Watson is packing her things for her new life, she calls Felicity over to her office. Watson admits that she will always have faith in the justice system despite its flaws, but admits that disobeying her boss to go after Diaz was the right call to make. Watson then acknowledges Felicity as a good person and admits that she deserves to be in prison, hinting that Watson showed regrets towards sending Oliver to prison. Watson then admits her regrets to not catching Diaz or any of the Longbow Hunters since things could've been different if that occurred. Unknown to Agent Watson however, Rene did capture the Silencer and Felicity ordered Rene to keep Watson as well as Dinah in the dark about it due to Felicity loosing faith in law enforcement.
During the Anti-Monitor Crisis, Watson as well as everyone in the multiverse except for the seven Paragons, was killed in an antimatter wave by the Anti-Monitor on December 10, 2019. A month later, after the Paragons and the Spectre created a new universe, it remains unknown if Watson was restored as well. It seems likely she was given that the public became aware of the identities of every individual on Team Arrow and that they were deputized by the SCPD.
- "Just because the system is flawed doesn't mean it shouldn't exist. Even someone like Ricardo Diaz needs a lawyer, a fair trial. We protect the rights of people who don't deserve them 'cause it's the only way to protect them for everyone."
- —Samanda Watson[src]
Watson is similar to Quentin Lance at first; as she is going after Oliver Queen, also known as Green Arrow, because he is a vigilante (disregarding the fact that vigilantes are not in the F.B.I.'s jurisdiction; as it is in the jurisdiction of local law enforcement) she is very calm and level-headed, as she did not display any signs of anger when she was interviewing each member of Team Arrow respectively, to gather evidence that Oliver is a vigilante. She is ruthless as she arrested Oliver at a Thanksgiving event for the crimes charged on Green Arrow in front of his son, William Clayton, proving that she doesn't care how she prosecutes her suspects in front of the individuals close to them.
Watson is very arrogant to the point of having a massive ego, as she believes being an F.B.I. agent makes her superior to Oliver who is the mayor of Star City; legally it doesn't (proving just how deluded she is) when she was in the mayor's office waiting for Oliver (despite the fact that she didn't make an appointment to see him) she (arrogantly) told him she didn't give a damn, when Oliver could've had her arrested for illegally trespassing in the mayor's office (as she did not have a search warrant the mayor's office or a warrant to question him); her arrogance is also to the point of being delusional, as she believes because she is an F.B.I. agent, that the laws don't apply to her; legally it does.
Watson is quite immoral and dishonorable; when Oliver was away with Slade Wilson, she interrogated Oliver's teammates "thus widening her net" behind his back, a sign that she will use and go after anyone close to him to gather evidence and blackmail anyone to testify against Oliver.
Watson does seem to have a sense of humor, as she took time to taunt Oliver on how he couldn't stop Ricardo Diaz as Green Arrow or the mayor despite knowing fully well the answer and also lightly mocked Rene Ramirez for how bad he was at keeping his vigilantism career a secret.
Despite Watson's negative behavior, she is revealed to have a tender side, as evidenced by the fact that before she arrested Oliver, Watson did express some sadness for the death of Quentin Lance saying that this sadly changes nothing for the arrangement she made with Oliver. Watson was unaware of this, but arresting Oliver is what led to the crime wave and corruption to increase even further through Star City. Despite being loyal to the FBI and to the SAC and despite all her corrupt methods, Watson still has a sense of honor. For example, when after meeting with Felicity Smoak, Watson came to realize her deal with Oliver was incomplete as Diaz was still out, so when her SAC refused to let the FBI hunt Diaz any longer, Watson willingly disobeyed her boss to help Felicity track down and capture Diaz, believing the SAC will be forgiving as long as Diaz is caught. While hunting for Diaz, Watson even put went as far as to put her own life in danger against the Longbow Hunters, just so she could honor the deal with Oliver. Watson also appears to have good morals and principles since she believes everyone, including people like Ricardo Diaz, have the right to a lawyer and to a fair trial despite the fact that Oliver had an unfair trial as arranged by Diaz. Despite all the trouble Watson caused for Team Arrow when she had Oliver put under indictment, Quentin still spoke highly of Watson believing that all she wants is justice when Quentin thought Watson would make a great ally to the team in their fight against Diaz.
Watson also seems to have a fondness for Felicity. After Diaz and his crew escaped and with the SAC being angry at Watson for disobeying him, Watson called Felicity over to her office for one last meeting. The SAC has demoted Watson to a desk job in Washington DC. Watson admits to Felicity that although she believes good law enforcement does make up for the bad, disobeying her boss as well as going off the books to catch Diaz was the right call to make. Watson then verbally acknowledges Felicity as a good individual and that she doesn't deserve to be without her family, hinting that she truly is remorseful for having sent Oliver to the Slabside Maximum Security Prison.
- High-level intellect/Expert investigator/Leadership: As a high-ranking F.B.I. agent, Watson is a very intelligent woman and excellent investigator, able to follow every lead to discover the truth behind any crime. Watson was able to figure out that John Diggle is posing as Green Arrow, to divergent suspicion that Oliver Queen is a vigilante, who is under investigation by the F.B.I. (albeit without any evidence); she also somehow discovered that Oliver was previously the vigilante known as the "Hood/Arrow" and that John poses the vigilante archer clearing the latter suspicion of being a vigilante. She also has excellent leadership skills, having led a group of F.B.I. agents sent to help Team Arrow battle and defeat Ricardo Diaz despite his control of the Quadrant, a massive group of dangerous criminals.
- Expert hand-to-hand combatant/Martial artist: As an F.B.I. agent, Watson is a highly skilled hand-to-hand combatant and martial artist; allowing her to hold her own reasonably well against Red, a member of the Longbow Hunters, and managed to land several effective hits and managed to throw her off briefly.
- Expert markswoman: As an F.B.I. agent, Watson is highly skilled in the use of firearms; as she was able to shoot down many of Diaz's men.
- Samanda has similarities to the late Amanda Waller, Smith and Sam Lane; all three are individuals in positions of high government who, despite their obligation to the law, arrogantly believe they are above the entity and thus; not afraid to resort to dishonorable and immoral acts to achieve their goals. This subsequently puts them in a confrontation against the heroes.
- But unlike Lane, Smith and Amanda; Samanda ultimately has an honorable side and is willing to work with the heroes to take down mutual foes.
- When Samanda sent Oliver to Slabside, it led to many consequences for Oliver while he was imprisoned.
- An abusive prison guard named Peter Yorke treated Oliver badly out of all the other inmates because of Oliver revealing himself to be a vigilante. Yorke and Samanda were both unaware of this, but an inmate named Danny Brickwell corrupted all the guards in the prison and was working with Diaz as well as Talia al Ghul to kill Oliver. Brickwell promised to arrange a meeting with Oliver and Talia in exchange for Oliver getting rid of Yorke, since Brickwell knew Yorke wouldn't agree to take part in the corruption. Oliver tried to warn Yorke about Brickwell only for Yorke to not listen and instead insult Oliver. Because of this, Oliver later confronted Yorke and when Yorke tried to intimidate Oliver into leaving him alone, Oliver angered Yorke by naming Yorke's wife and son. Enraged that a vigilante knew about his family, Yorke was about to assault Oliver with a baton only for Oliver to stab himself and blame it on Yorke to get him fired. Yorke denied stabbing Oliver and the guards knew Yorke didn't do it, but they still had Yorke fired. The guards the reported to the Warden that Yorke tried to kill Oliver in cold blood and that Dunbar saved Oliver, making everyone believe Yorke to be corrupt. Oliver eventually broke up the fight club.
- Samanda and Yorke were unaware of this, but Jarrett Parker the chief psychiatrist of Slabside was lobotomizing the inmates at a facility called Level Two with help from a guard named Magee. Yorke knew who Dr. Parker and Magee were and that Level Two existed, but Yorke was the only guard unaware of Parker's illegal experiments. Parker tried to lobotomize Oliver only to fail. Oliver eventually learned that Talia was down there and reluctantly worked with her to escape Level Two. Oliver gave Talia all the information on Parker's practices which Talia passed onto Felicity, Laurel Lance, and Dinah. Afterwards, a federal judge ordered an investigation be launched into Slabside to check if the prisoners were being abused. Watson and Yorke most likely found out about what Parker was doing afterwards.
- When Laurel made a deal with Samanda's superiors to get the charges dropped against Oliver in exchange for Diaz, Diaz managed to infiltrate the prison to kill Oliver in retaliation for helping the FBI cost him his empire. Oliver tried to warn Felton, Yorke's replacement, about Diaz, but Felton ignored Oliver's warnings since he thought it was impossible to infiltrate Slabside. Unfortunately, Felton was proven wrong and Diaz orchestrated a prison riot. Oliver, working with Ben Turner, managed to save Felton, Miller and the surviving guards from Diaz's wrath. Oliver then imprisoned Diaz in his cell and left. Felton thanked Oliver before Oliver left the prison and then proceeded to thank Turner as well, who was surprised that Felton would show kindness towards him.
- During Oliver's time in prison, Oliver befriended Stanley Dover. Stanley manipulated Oliver into believing that he was innocent and worked with him in prison. Oliver eventually discovered Stanley's true colors when Stanley murdered a guard named Dunbar, who was one of the guards who schemed with Brickwell to remove Yorke, in the showers right after Felton gave Dunbar a warning about taking part in corruption. After killing Dunbar, Stanley tricked Oliver into blaming Turner for it. Stanley escape during Diaz's riot in the prison.
- When Samanda sent Oliver to Slabside and forced him to reveal his identity to the world, it led to many consequences;
- Oliver couldn't continue being Green Arrow because of Emily Pollard and her policies against vigilantes as well as the fact that Samanda forced him to reveal his identity. Much to Pollard's annoyance, Dinah and Laurel deputized Oliver as a member of the SCPD. Eventually, only after Team Arrow saved Pollard from certain death, Pollard deputized the entire team. Pollard originally tried to prevent Team Arrow from wearing vigilante suits when working with the SCPD, but Dinah eventually found a way for Team Arrow to adapt with working in the parameters of the law while in vigilante suits. Dinah would then blackmail Pollard into making Team Arrow operate as a separate unit from the SCPD when Dinah exposed James Midas, a criminal, as a contributor to Pollard's campaign.
- Five months after Ricardo Diaz's downfall; due to the citizens of Star City being aware that Diaz had corrupted most members of the SCPD; as a result, they have lost complete faith in the police department, as they have come to have more faith in vigilantes; such as the new Green Arrow. Team Arrow was deputized by the SCPD and later was turned into their special unit for the SCPD. Star City's faith in the police was eventually restored thanks to this collaboration.
- Stanley Dover travelled to Star City to try to reunite with Oliver. Along the way, Stanley murdered a corrupt politician named Kullens and two other victims, as well as attempted to murder of Dinah Drake, Oliver Queen, Felicity Smoak and William Clayton. Oliver then had the SCPD send Stanley back to prison where Stanley's prison sentence was increased to life in prison, especially when Oliver was able to prove that Stanley murdered Dunbar and not Turner.
- The public began to acknowledge Team Arrow's actions and the members of the team soon became celebrities.
- It is unknown whether Samanda is still alive in the new multiverse that Oliver created. Moira Queen believed that Oliver could only change the things that didn't change him. According to Oliver and Turner, Slabside made Oliver view the world in gray rather than in black and white, which Turner believed made Oliver a better man. So it seems likely Samanda was restored in the new universe.