Detective McKenna Hall is a former police detective of the Star City Police Department (due to her being temporarily paralyzed). She is also an old friend/the ex-girlfriend of Oliver Queen, an old friend of the late Tommy Merlyn, and the sister of an unnamed woman. When Oliver needed help to take down Vertigo, he went to her for the police's file on The Count. She later went on two dates with Oliver and shared a kiss with him. She later began a romantic relationship with Oliver. McKenna at the same time was chosen by Quentin Lance to be his partner in uncovering the Hood's identity. However, this romantic relationship, ended after she was shot by Helena Bertinelli, and became temporarily paralyzed. Due to this, she had to move with her sister to Coast City, which she claimed has the best physical therapy facility in the country.
Mckenna was a close friend and fellow partygoer of Oliver Queen and Tommy Merlyn. She once got herself and Oliver banned from the club Deville for taking off her clothes; she claimed there were no signs around which stated she couldn't do so. While Oliver was supposedly dead for five years, McKenna became a police detective with the SCPD.
In "", Oliver encounters McKenna at the SCPD station. Happy to see each other, Oliver notes his amazement that she has become a cop. He talks to her trying to find info about The Count. McKenna gives him what little information the police have on him. Later when Oliver is doing a deal with The Count, McKenna along with Lance disrupt the deal with the Count escaping. At the Queen Mansion, Lance and McKenna confront Oliver about the incident with her revealing that she spotted Oliver at the scene. When the Hood nearly overdoses the Count, Lance and McKenna arrive with Lance telling him that his actions prove that he is what he always thought he was: a murderer. McKenna contacts Oliver the next day and tells him the news saying it was good seeing him again.
In "", Oliver flirts with McKenna to implant a chip on her phone to eavesdrop on her conversations about the Dodger and also at the same time asked her out. They went on a date which was going well until McKenna unintentionally mentions his life on the island. McKenna then got a call regarding the dodger and had to leave the date as awkward as it is. Although the new spark of the romance still ended well for them in the end.
In "", As Oliver's club Verdant is opening, Oliver asks McKenna to be his date for the night. McKenna and Quentin arrest The Huntress as she fell for the trap they set which was sending two empty vans, making Oliver and Helena believing one of them carried Frank Bertinelli. McKenna and Quentin ask Helena who The Hood is, she tells them it's Oliver Queen but the two don't believe her. During Helena's pursuit for her Father, McKenna calls for backup and approaches Oliver and McKenna. McKenna tells both The Hood and The Huntress to hold their ground and surrender, the Huntress fires her shotgun at her. Though McKenna was wearing a vest, she was still harmed by a bullet. She tells Oliver she is leaving the city, though Oliver says he will follow her, McKenna tells him to stay.
McKenna is a very honest person and is very passionate about her work as a police detective. She is similar to Quentin Lance at first, believing in law and order; therefore, McKenna is against the actions of Oliver Queen (under the persona of the Hood).
- Peak of human physical condition: As a police detective, McKenna is in top physical condition.
- Police training: McKenna has received training, as all Star City Police Department members do.
- Expert hand-to-hand combatant: As a police detective, McKenna is an expert in hand-to-hand combat.
- Expert marksman/Firearms: As a police detective of the Star City Police Department, McKenna is skilled in the use of firearms.
- Guns: McKenna is very proficient in using guns.
- At the San Diego Comic Con, it was revealed that McKenna Hall was originally planned to be killed off but kept due to how audience members took to her. She was also mentioned to possibly come back to Starling City in the second season, however, this never happened.
- Her first name "McKenna" is the last name of Stephen Amell's character on Blue Mountain State, religious quarterback Travis McKenna.
- She is possibly related to Carter Hall, as they share the same last name.
Behind the scenes
- McKenna Hall is possibly named after a character from Batman comics, Melody McKenna of the Gotham City Police Department, who also has a similar dislike for vigilantes.
- The last name of Hall is a popular named used amongst DCU characters, amongst them Carter Hall and Shiera Sanders Hall, also known as Hawkman and Hawkgirl.
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