Officer Kono Kalakaua is a former member of the Hawaii Five-0 Task Force and an expert sniper.
In addition to that, she is also a graduate of the HPD Academy and is also a cousin of fellow H50 member, Lieutenant Chin Ho Kelly.
Born and raised in Hawaii, Kono grew up enjoying surfing and at the age of fifteen, was recruited by the CEO of Coral Prince Surfing, Ian Adams.
Kono blew out her knee during a surfing tournament, causing her to be unable to compete professionally ever again. This marked the end of her surfing career.
While recovering, Kono decided to follow in the footsteps of her cousin, Lieutenant Chin Ho Kelly, and become a cop by entering the HPD Police Academy.
Kono's mother was into surfing and taught her everything she knew about it. Before her mother could take a big boat trip, she suffered a burst aneurysm. Kono's mother survived, but was left brain damaged and unable to speak, devastating Kono.
Kono was out surfing when her cousin, Chin, recruited her for Five-0. The team needed someone who was an unknown to the criminals operating on the islands.
During the second episode "Ohana" she was protecting the son of the victim when they discovered that the father's girlfriend Natalie, who was in the house, was part of the team who kidnapped the father.
After graduating from the police academy, she became an official and permanent member of the task force, that was renamed "Hawaii Five-0".
In S2, she was under investigation by the Department of Federal Bureau of Investigation and got a promotion.
Upon discovering the truth, that Kono was being used as bait for Captain Fryer, Steve is enraged. In the midst of shooting, Kono is shot in the arm, but otherwise unharmed. After the case is solved, Steve punches Captain Fryer, telling him that no one messes with his team.
In Pa Make Loa (episode), Kono's findings about the doctor, Jarrod Prodeman, who was running a smallpox trial disguised as a drug trial proved to be very helpful to the team as well as the NCIS team of Special Agent G. Callen and Special Agent Sam Hanna, who in the NCIS: Los Angeles Season 3 episode "Touch of Death", used the evidence to confront Prodeman, who they arrested on Venice Beach in Los Angeles, California.
In the season finale, she was kidnapped by Frank Delano, who forced Chin to choose between saving Kono herself and his wife. After Chin picked his wife, Kono was later thrown overboard and seen struggling to survive but failing due to the fact that she had been bound and gagged.
In the S3 Season premiere, she was still in the ocean, and about to drown until someone saved her. It turned out to be her boyfriend, who Chin had managed to call in advance while racing to Malia's aid.
In the finale, she leaves for Shanghai with Adam and Doris McGarrett, Steve's mother, after being framed for murder although she's eventually cleared.
In the first episode Kono is on the run for a murder she didn't commit that Michael Noshimori did.
In Ina Paha, in an alternate reality where John McGarrett survived being shot dead by Victor Hesse and due to the Hawaii Five-0 Task Force not being created, the Kono of that reality is a model and champion surfer, regularly appearing in ads for TV.
In Powehiwehi (episode), Adam asks Kono if she wants to get married, but she leaves for work, unable to come up with an answer. While supervising JC Dekker, who hears about the situation with Adam, he tells her to admit what she is feeling, or leave him. At the end of the episode, taking JC's advice, Kono shows up to Adam's workplace and accepts his proposal.
In Mo'o 'olelo Pu, Kono decides to go on a catamaran trip from the island of Oahu to the island of Molokai, in honor of her mother who had planned a similar trip but was prevented when she had a brain aneurysm. A violent storm sinks Kono's boat and leaves her adrift on her surf board. She eventually manages to call Chin for help, but loses her phone before she can get most of the message out. Chin and Steve quickly alert the Coast Guard who are delayed by another storm and ultimately can't find her before their helicopters run out of fuel. In the end, using the lessons her mother taught her, Kono manages to make it to shore herself and flags down a passing car. Exhausted, sunburned and dehydrated, Kono is taken to the hospital.
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In the last episode of season 7, in Ua Mau Ke Ea O Ka Aina I Ka Pono, Kono leaves for Carson City, NV to stop a sex trafficking ring around the country, the last scene is her leaving on a plane. In Ua Mau Ke Ea O Ka Aina I Ka Pono, Kono thought she was pregnant. She bought a pregnancy test at the dollar store, with her niece Sara.
Danny Williams: You-you remind me a lot of Kono, by the way. That's a compliment.
Tani Rey: Where is she?
Danny Williams: She's on the mainland, working with a task force shutting down a sex trafficking network. 
Danny Williams: You heard from Kono?
Steve McGarrett: Yeah, I have. Yeah, I spoke to her a couple days ago. Seems like, every time she locks up a perp, they get new intel that leads to another arrest. She's even brought in Chin's San Fran task force to handle the West Coast operations. What?
Danny Williams: No, it's just weird. I mean, I miss those guys, you know?
Steve McGarrett: Yeah, me too. Look who's a sensitive little flower now. 
Steve McGarrett: Adam Noshimuri came to visit me this morning.
Danny Williams: Okay.
Steve McGarrett: I guess, uh, Kono's case has gone federal. The FBI want her to stick around, see it through to the end.
Danny Williams: So, what does that mean? When is she coming back?
Steve McGarrett: Not any time soon. Adam's flying out tomorrow to be with her. 
Danny Williams: All right, what, uh what are you what are you doing tonight?
Adam Noshimuri: I'm just going home to pack. Uh, I'm meeting Kono in L.A. and, uh, my flight leaves at the crack of dawn. 
Steve McGarrett: Look, he, (Adam) married a member of my team. With my blessing, all right? This man has proven his loyalty to me over and over again. I trust him with my life, okay? That's got to stand for something. 
Despite being the only female member and the rookie of the team, Kono established herself quickly. She is highly skilled in martial arts, and is loyal to her team, especially to her cousin Chin.
Kono blames Chin's ex-fiancee Malia for leaving him. Kono is not afraid doing her job, and is quite a formidable cop.
Kono is currently learning more and more about the duties of being a cop. She does not easily forgive herself if she makes a mistake and she's also the only one who calls Lieutenant Commander Steve McGarrett "boss."
Like her cousin, Chin, Kono shows deep loyalty to Steve. When Kono realizes the truth about Chin's leaving the force (the fact that her cousin took the blame for their uncle's crime), she becomes angry that Chin did not tell the truth. She tells Chin that after their Aunt Mele passes, Chin has to tell the truth.
Kono dresses in practical clothing for most of the teams operations. She can be seen wearing a bikini in several episodes due to her love of surfing.
She has dark brown shoulder length hair, usually loose around her shoulders or sometimes tied up, and also dark brown eyes.
Despite being the least-experienced police cop of herself, Danny and Chin, Kono has proven herself to be a quick study as she now serves as the sniper/sharpshooter of the team, often providing cover or protection for her teammates. She has been commonly underestimated, yet comes through in the clutch multiple times.
- Hand to Hand Combat - Kono is easily capable of defending herself and is skilled in hand-to-hand, using various martial arts to assist herself in fighting, with her preferred fighting style being Karate.
- Technology - Like Steve and Chin, Kono is also skilled at using any and all kinds of technology at her disposal.
- Interacting/Dealing with Children - Like Danny, Kono is very sympathetic towards children and can easily get a young child to interact with her.
- Firearms - Kono is a trained sniper, presumably learning to handle a rifle while attending the Police Academy. She frequently uses a Knight's Armament SR-25 and often provides back-up in situations, one such example being in the Season 2/NCIS: Los Angeles Season 3 crossover episode, Pa Make Loa (episode).
Kono and Chin are cousins; the two have a loving and caring relationship. Chin is the reason Kono became part of the Five-0 task force. Chin was also the person who inspired her to become a police officer.
Kono and Chin are usually partnered up when working, either following up leads for Steve or staying at HQ to work on the more technical aspects of the operations.
Kono and Danny have an easy, respectful relationship. Kono sometimes makes fun of him for being from the mainland and not changing his attitude during his stay at the island.
Kono has been seen teaching Danny how to surf so that Danny could surf with his daughter.
Kono and Steve have a respectful and easy relationship. They enjoy each other's company in and outside of work. As with everyone in the team, Steve is quite protective of her. When Kono goes missing during a storm while surfing the islands, Steve calls in both the Coast Guard and the Navy to help locate her, and when the Coast Guard refuses to send out rescue helicopters until a storm has passed, Steve offers to fly into the storm himself if they give him one to find her. When Chin receives word that Kono is safe, Steve is clearly relieved to hear it.
It is unclear when and how Adam and Kono met, but it was revealed in Ua Hopu that the two are dating.
Adam and Kono's relationship isn't easy due to her being a cop and him being the heir of Hiro Noshimuri, head of the Yakuza. They love each other but do not always trust each other. Kono has used their connection to get information for Five-0 operations.
After moving to the mainland to pursue a different career, she and Adam drifted apart. Both Kono and Adam underwent changes in personality due to her new job and his experiences on the island, and this resulted in her calling off their marriage and leaving him.
- Kono is the only Five-0 member not to spend time in jail. Steve McGarrett spent just over a week in Halawa Correctional Facility.  Chin Ho Kelly spent 8 hours in Halawa Correctional Facility  and was arrested two years later. . Danny Williams spent a few days in a Colombian prison. 
- Her initial sidearm presented to her in Ohana (episode) was a Kel Tec PF-9. She then used a Smith & Wesson 3913 "Ladysmith". This later changed to a Smith & Wesson M&P in 9mm with Crimson Trace grip in Season 2 and 3.
- Spent 3 years on the surfing pro circuit prior to blowing out her knee.
|Ha'i'ole||Ua Lawe Wale||Kame'e||Mea Makamae||Ma'eme'e||Ka Hakaka Maika'i||Ka Iwi Kapu||Lapa'au||Ike Maka||Kil'ilua||Pahele||Alaheo Pau'ole|
|Ka Ho' Oponopono||Pu'olo||Mai Ka Wa Kahiko||I Helu Pu||Kupale||Lekio||Kalele||Ha'alele||Pa Make Loa||Ua Hopu||Ua Hala|
|Aloha ke kahi I ke kahi||A'ale Ma'a Wau||Ka 'oia'i'o ma loko||A ia la aku||Kupu'eu||Kupouli 'la||Ua Nalohia||Akanahe||Ha'uoli La Ho'omoaika'i||Ho'onani Makuakane||Pukana|
|O kela me keia manawa||Hana Lokomaika'i||Na Hala a ka makua||Pale'la||Hoku Welowelo||Ma lalo o ka ili||Ho'i Hou||Ku I Ka Pili Koko||Pe'epe'e Kanaka||Makani 'Olu a Holo Malie||O ka Pili'Ohana ka 'Oi|