List of Hawaii Five-0 (2010 TV series) characters

This is a list of fictional characters in the television series Hawaii Five-0, which aired on CBS from 2010 to 2020. The article deals with the series' main, recurring, and minor characters.

Main Name Portrayed by Seasons 1 2 3 4 5 6 7 8 9 10 Steve McGarrett Alex O'Loughlin colspan="10" Danny "Danno" Williams Scott Caan colspan="10" Chin Ho Kelly Daniel Dae Kim colspan="7" colspan="3" Kono Kalakaua Grace Park colspan="7" colspan="3" Taryn Manning colspan="3" colspan="1" colspan="2" Dr. Max Bergman Masi Oka colspan="1" colspan="6" colspan="2" Lori Weston Lauren German colspan="1" colspan="8" Catherine Rollins Michelle Borth colspan="1" colspan="1" colspan="2" colspan="1" colspan="1" colspan="4" Lou Grover Chi McBride colspan="3" colspan="6" Jerry Ortega Jorge Garcia colspan="3" colspan="1" colspan="6" Tani Rey Meaghan Rath colspan="7" colspan="3" Taylor Wily colspan="7" colspan="3" Duke Lukela Dennis Chun colspan="7" colspan="3" Allison colspan="2" colspan="7" Dr. Noelani Cunha colspan="6" colspan="1" colspan="3" Junior Reigns Beulah Koale colspan="7" colspan="3" Adam Noshimuri colspan="1" colspan="6" colspan="3" Quinn Liu Katrina Law colspan="9" colspan="1"

Steve McGarrett

Danny "Danno" Williams

Chin Ho Kelly

Chin Ho Kelly (portrayed by Daniel Dae Kim) is a member of the Five-0 task force and cousin of Kono Kalakaua. Kim also portrayed Chin in a crossover episode with NCIS: Los Angeles, and in another crossover episode with MacGyver. Daniel Dae Kim was nominated for the Teen Choice Award for Choice TV Actor: Action, in 2011 and 2012, for his portrayal of Chin.

Lieutenant Chin Ho Kelly is the third member of Five-0. He was a former Honolulu Police Department police officer who left the force due to false allegations of corruption. He is close friends with the McGarrett family as his late father Kam Tong was a long-time colleague of John in the HPD while Chin was trained by John during his rookie days patrolling the beat. In the pilot episode he was recruited by Steve for the new task force and often serves as the team's technical expert and designated sniper alongside his cousin Kono. Throughout the show, he is often seen manipulating the smart board in the office or fiddling with all things digital. He was married to Dr. Malia Waincroft, his long-time on-and-off girlfriend.

Chin attended Kukui High School and was the star quarterback until McGarrett broke his records as a sophomore. After that season, McGarrett was sent off to a military school on the mainland. As a high school student, Chin was described as being multi-talented with a wide variety of interests, having played football and was also in the math club and school band. Little is known about his early career with the Honolulu Police Department except that he had been assigned to District 5 (in real life, covering the areas from Kalihi to Salt Lake) and that Steve's father John was his training officer. He rose to the rank of Detective Lieutenant before leaving over false allegations that he had stolen money from the evidence locker. From his resignation up until Steve's return to Hawaii, Chin was working as a security guard. It is eventually revealed that it was his uncle, a retired cop himself, who had done it out of desperation over the expenses for his cancer-stricken wife's treatments. Kono confronts Chin about it but he flatly refused to turn his uncle in for fear that it would cause all the cases his uncle had solved to be reopened and the criminals would be released. After it became known that the allegations against Chin were false, he was reinstated to his rank and his badge returned to him.

In the season 2 finale cliffhanger, Chin is put in a difficult position after a group of corrupt ex-HPD cops simultaneously hold Kono hostage and threaten Malia in the couple's own house as part of a plot to free Frank Delano from Halawa. He chose to save his wife but Delano still orders his men to kill both women. Kono, bound and gagged, was pushed into the sea but was rescued by Adam, who was hiding nearby. The paramedics were unable to save Malia and she dies at home.

It is revealed in Season 4 that Chin's father was murdered fifteen years ago by his brother-in-law Gabriel Waincroft, who grew up to become a notorious drug lord despite Chin's efforts to set him straight. At that time, Chin and Malia, then rookies in their respective occupations, were dating and Malia had asked Chin to talk to her wayward younger brother, then a known juvenile delinquent. Kam Tong happened to be at the wrong place at the wrong time when Gabriel was ordered to kill someone as part of his gang initiation. Years later, at Kono and Adam's wedding, Gabriel confronts Chin and tells him that while he was sorry that Kam Tong was the unfortunate victim of his gang initiation, he blamed Chin for failing to protect Malia.

Unlike the other Five-0 members, Chin often rides a motorcycle to work. It has been said that "everyone" knew who Chin was and his intimate knowledge of the island of Oahu and Hawaiian culture, rapport with the locals and ability to speak Hawaiian often aids the team when dealing with locals who are often suspicious of haole cops (such as Danny). His "street smarts" and local knowledge complements Danny's experience as a detective and McGarrett's tactical know-how.

In Season 6 Chin starts a relationship with Detective Abby Dunn and that continued throughout the course of the season in to Season 7.

Also in season 6, Five-0 investigates a woman's murder where the woman's daughter, Sara, claims to have an uncle in the HPD: Chin. Chin learns that Sara's aunt was his deceased wife Malia, as the girl is Gabriel Waincroft's daughter. Soon after, before he dies, Gabriel apologizes for killing Chin's father and asks Chin to take care of Sara. At the beginning of season 7, Chin tries to get custody of the orphaned Sara, but her aunt and uncle on her mother's side win and take her to Mexico. Following Sara's kidnapping by the Diego drug cartel in a plot of revenge against Five-0, Sara's aunt and uncle relinquish her custody to Chin for her safety

At the end of Season 7, Chin is offered a chance to run the Five-0 Task Force that is being established by the San Francisco Police Department; it is revealed in the Season 8 premiere that he accepted and moved there with Abby and Sara.

Chin's pistol of choice is the SIG-Sauer P229R. He previously used the HPD standard-issue Smith & Wesson Model 5906.

Kono Kalakaua

Officer Kono Kalakaua is a fresh HPD academy graduate who was recruited by Steve for the new task force in the pilot episode. She is the cousin of Chin Ho Kelly. Despite her slight frame, she is well-versed in martial arts and is a skilled marksman (she is usually the designated sniper when the situation requires one).

Kono was a former professional surfer but a serious injury to her knee ended her career. She decides to join the "family trade" and was days away from graduating from the HPD academy when McGarrett recruited her for the new "Governor's Task Force", as Five-0 was initially called. In the first several episodes of season 1, she works under the watchful eye of her cousin and quickly wins the trust and confidence of the other team members. She is detained and questioned by the HPD, having been accused of stealing $10 million from an HPD asset forfeiture locker. While on suspension, she helps Chin and Danny go after Wo Fat, who was responsible for framing McGarrett for the murder of the Governor. To the members of the Five-0 task force and to the general public, Kono had been stripped of her badge by the Internal Affairs Department of the HPD, but it was later revealed to be a ploy for her to go undercover to bust a string of dirty ex-cops.

In Season 2, Kono began a relationship with Hiro Noshimuri's son, Adam. When Adam's brother, Michael, is released from prison, he kills someone with Kono's gun to frame her. She is cleared, but Adam has to kill Michael to protect her and Kono goes into hiding with Adam, skipping from one place to another to evade capture by vengeful yakuza members. At the beginning of Season 5, Adam starts to talk about marriage, and in the episode "Blackout" Kono accepts his proposal. They marry at the end of the season, but in the Season 6 pilot they are tortured by Chin's brother-in-law, Gabriel, who runs away with Adam's money. The money was to pay the yakuza to free Adam from his past. Without the money the yakuza's men persecute Adam and he is forced to kill them before discovering that Gabriel has paid off his debt with the yakuza. Upset, Adam goes to the police with Kono and he takes a plea deal for 18 months in prison.

At the end of Season 7, Kono left Hawaii for Carson City, Nevada, where she joined a multi-agency task force combating sex trafficking. In the season 8 episode I Ka Wa Ma Mua, I Ka Wa Ma Hope (The Future is in the Past) Danny dreams of the future and Kono has a child with Adam. However, midway through season 9, Adam returns to Hawaii and tells the team he and Kono have broken up.

Mary Ann McGarrett

Mary Ann McGarrett is the younger sister of Steve McGarrett. She, along with her brother, were both sent to the mainland after their mother was (presumably) murdered. Steve went to the Army and Navy Academy in Carlsbad, California, while she lived with their Aunt Deb several hours away. As a result, both siblings had harbored resentment over their father splitting up the family and drifted apart over the years; in the episode "Lanakila", she comments to her brother that the last time they met in person was at their mom's funeral over fifteen years ago. She is the "black sheep" of the family, wandering from job to job, and was said to be living in Los Angeles when Steve returns to Hawaii for good. In a scene deleted from the Pilot episode, Steve mentions bailing her out of trouble more than once and keeping it from their father to "let Dad go to his grave believing that you were his perfect little girl". She takes a job as a flight attendant but quit after her so-called friend Angela had betrayed her and took advantage of her naivete to be a mule for trafficking blood diamonds. In season 3 Mary returned to Hawaii working as a caretaker, originally not wanting to reconnect with Doris she later meets her after strong encouragement from Steve and the person she was caring after.

In season 4, Mary adopts a baby girl and names her Joan, after her father. Steve was initially against it but he comes to accept Joan after being forced to babysit her for the day. Since then, Mary and Steve have reconnected and she regularly sends him videos of Joan.

In the original show, Mary Ann only appeared in a two-episode arc. She was also estranged from her brother and was married and had an infant son who died of cancer. She was portrayed by Nancy Malone. In the reboot, the character features more in Steve's life and reconnected with him.

Dr. Max Bergman

Dr. Max Bergman is a former medical examiner who belonged to the City and County of Honolulu. Bergman was initially billed as a recurring character but Oka joined as a series regular and has been part of the main cast since Season 2.

Dr. Bergman was first introduced to Five-0 by Governor Jameson. He was playing the piano and then wordlessly proceeded to explain the victim's cause of death to Danny and McGarrett, before finally greeting them and introducing himself. He has the tendency to rattle off trivia, prompting the Five-0 team to cut him off and tell him to get to the point. Danny often mocks him with medical jokes. Despite his lack of social skills, he does get along with the other members of Five-0. He has a Halloween tradition of dressing up as a character from a Keanu Reeves film.