<Ul> <Li> Alex O'Loughlin as Lieutenant Commander Steven J. `` Steve '' McGarrett , USNR . A decorated former Navy SEAL , McGarrett is head of the Five - 0 Task Force and son of retired HPD Sergeant John McGarrett . John 's murder and storyline forms the premise of Steve 's return to Hawaii and the formation of the Task Force . </Li> <Li> Scott Caan as Detective Sergeant Danny `` Danno '' Williams , HPD . He is a divorced single father who transferred from Newark PD in New Jersey to be with his daughter and is the de facto second - in - command of Five - 0 . </Li> <Li> Daniel Dae Kim as Detective Lieutenant Chin Ho Kelly , HPD ( seasons 1 -- 7 ) . A veteran HPD detective , he was John McGarrett 's former rookie and provides technical expertise and local know - how . Kim departed the series in late June 2017 prior to the start of production of the eighth season due to a salary dispute with CBS . Kim had been seeking pay equality with co-stars Alex O'Loughlin and Scott Caan , but CBS 's final offer to Kim was 10 -- 15 % lower than what O'Loughlin and Caan make in salary . </Li> <Li> Grace Park as Officer Kono Kalakaua , HPD ( seasons 1 -- 7 ) . A former surfer , she was personally recruited by McGarrett while still in her final days at the HPD Academy . She is the cousin of Lieutenant Kelly . Park departed the series in late June 2017 prior to the start of production of the eighth season due to a salary dispute with CBS . Park had been seeking pay equality with co-stars Alex O'Loughlin and Scott Caan , but CBS 's final offer to Park was 10 -- 15 % lower than what O'Loughlin and Caan make in salary . </Li> <Li> Taryn Manning as Mary Ann McGarrett , ( season 1 , recurring subsequently ) Steve 's sister who lives on the mainland and occasionally visits Hawaii . </Li> <Li> Masi Oka as Dr. Max Bergman ( seasons 2 -- 7 ; recurring previously ) , the eccentric and well - respected County of Honolulu medical examiner . </Li> <Li> Lauren German as Special Agent Lori Weston ( season 2 ) . A senior DHS agent assigned to Five - 0 to provide oversight . </Li> <Li> Michelle Borth as Lieutenant Catherine Rollins , USNR ( seasons 3 -- 4 ; recurring previously and subsequently ) . A former Navy Intelligence officer and McGarrett 's ex-girlfriend . </Li> <Li> Chi McBride as Captain Lou Grover , HPD ( season 4 -- present ; recurring previously ) . A transfer from Chicago PD and has two children with his wife Renée . </Li> <Li> Jorge Garcia as Jerry Ortega ( season 5 -- present ; recurring season 4 ) , a conspiracy theorist who assisted Five - 0 during several investigations and is eventually hired as a `` consultant '' . </Li> <Li> Ian Anthony Dale as Adam Noshimuri ( season 8 -- present ; recurring previously ) , Kono 's husband , and a confidential informant to Five - 0 . </Li> <Li> Dennis Chun as Sgt . Duke Lukela ( season 8 -- present ; recurring previously ) , HPD officer who often acts as a liaison to Five - 0 . He was one of the few HPD cops who was not antagonistic towards Danny or the other Five - O members from the beginning , as he was colleagues with Steve 's father and also personally knew Chin and Kono 's family . In `` Hookman '' , he was shot by Curt Stoner ( Peter Weller ) , but survived and recovered . Chun is the son of Kam Fong Chun , who played Chin Ho Kelly in the original series . </Li> <Li> Taylor Wily as Kamekona Tupuola ( season 8 -- present ; recurring previously ) , a rehabilitated ex-convict , turned entrepreneur and owner of the Waiola Shave Ice , Kamekona 's Shrimp Truck , and Kamekona 's Helicopter Tours . He is a CI for the Five - 0 Task Force and their friend . </Li> <Li> Kimee Balmilero as Dr. Noelani Cunha ( season 8 -- present ; recurring previously ) </Li> <Li> Meaghan Rath as Officer Tani Rey ( season 8 -- present ) , whom McGarrett recruits from her job as a hotel pool lifeguard after being kicked out of the police academy , despite being a first - rate candidate . She initially declines to join but later joins as a team member . </Li> <Li> Beulah Koale as Junior Reigns ( season
<Ul> <Li> Alex O'Loughlin as Lieutenant Commander Steven J. `` Steve '' McGarrett , USNR . A decorated former Navy SEAL , McGarrett is head of the Five - 0 Task Force and son of retired HPD Sergeant John McGarrett . John 's murder and storyline forms the premise of Steve 's return to Hawaii and the formation of the Task Force . </Li> <Li> Scott Caan as Detective Sergeant Danny `` Danno '' Williams , HPD . He is a divorced single father who transferred from Newark PD in New Jersey to be with his daughter and is the de facto second - in - command of Five - 0 . </Li> <Li> Daniel Dae Kim as Detective Lieutenant Chin Ho Kelly , HPD ( seasons 1 -- 7 ) . A veteran HPD detective , he was John McGarrett 's former rookie and provides technical expertise and local know - how . Kim departed the series in late June 2017 prior to the start of production of the eighth season due to a salary dispute with CBS . Kim had been seeking pay equality with co-stars Alex O'Loughlin and Scott Caan , but CBS 's final offer to Kim was 10 -- 15 % lower than what O'Loughlin and Caan make in salary . </Li> <Li> Grace Park as Officer Kono Kalakaua , HPD ( seasons 1 -- 7 ) . A former surfer , she was personally recruited by McGarrett while still in her final days at the HPD Academy . She is the cousin of Lieutenant Kelly . Park departed the series in late June 2017 prior to the start of production of the eighth season due to a salary dispute with CBS . Park had been seeking pay equality with co-stars Alex O'Loughlin and Scott Caan , but CBS 's final offer to Park was 10 -- 15 % lower than what O'Loughlin and Caan make in salary . </Li> <Li> Taryn Manning as Mary Ann McGarrett , ( season 1 , recurring subsequently ) Steve 's sister who lives on the mainland and occasionally visits Hawaii . </Li> <Li> Masi Oka as Dr. Max Bergman ( seasons 2 -- 7 ; recurring previously ) , the eccentric and well - respected County of Honolulu medical examiner . </Li> <Li> Lauren German as Special Agent Lori Weston ( season 2 ) . A senior DHS agent assigned to Five - 0 to provide oversight . </Li> <Li> Michelle Borth as Lieutenant Catherine Rollins , USNR ( seasons 3 -- 4 ; recurring previously and subsequently ) . A former Navy Intelligence officer and McGarrett 's ex-girlfriend . </Li> <Li> Chi McBride as Captain Lou Grover , HPD ( season 4 -- present ; recurring previously ) . A transfer from Chicago PD and has two children with his wife Renée . </Li> <Li> Jorge Garcia as Jerry Ortega ( season 5 -- present ; recurring season 4 ) , a conspiracy theorist who assisted Five - 0 during several investigations and is eventually hired as a `` consultant '' . </Li> <Li> Ian Anthony Dale as Adam Noshimuri ( season 8 -- present ; recurring previously ) , Kono 's husband , and a confidential informant to Five - 0 . </Li> <Li> Dennis Chun as Sgt . Duke Lukela ( season 8 -- present ; recurring previously ) , HPD officer who often acts as a liaison to Five - 0 . He was one of the few HPD cops who was not antagonistic towards Danny or the other Five - O members from the beginning , as he was colleagues with Steve 's father and also personally knew Chin and Kono 's family . In `` Hookman '' , he was shot by Curt Stoner ( Peter Weller ) , but survived and recovered . Chun is the son of Kam Fong Chun , who played Chin Ho Kelly in the original series . </Li> <Li> Taylor Wily as Kamekona Tupuola ( season 8 -- present ; recurring previously ) , a rehabilitated ex-convict , turned entrepreneur and owner of the Waiola Shave Ice , Kamekona 's Shrimp Truck , and Kamekona 's Helicopter Tours . He is a CI for the Five - 0 Task Force and their friend . </Li> <Li> Kimee Balmilero as Dr. Noelani Cunha ( season 8 -- present ; recurring previously ) </Li> <Li> Meaghan Rath as Officer Tani Rey ( season 8 -- present ) , whom McGarrett recruits from her job as a hotel pool lifeguard after being kicked out of the police academy , despite being a first - rate candidate . She initially declines to join but later joins as a team member . </Li> <Li> Beulah Koale as Junior Reigns ( season
the names of the main characters in hawaii 5-0
the names of the main characters in hawaii 5-0
Lieutenant Commander Steven J. `` Steve '' McGarrett Danny `` Danno '' Williams Chin Ho Kelly Kono Kalakaua Mary Ann McGarrett Dr. Max Bergman Lori Weston Lieutenant Catherine Rollins Captain Lou Grover Jerry Ortega Adam Noshimuri Sgt . Duke Lukela Kamekona Tupuola Dr. Noelani Cunha Officer Tani Rey Junior Reigns
Lieutenant Commander Steven J. `` Steve '' McGarrett Danny `` Danno '' Williams Chin Ho Kelly Kono Kalakaua Mary Ann McGarrett Dr. Max Bergman Lori Weston Lieutenant Catherine Rollins Captain Lou Grover Jerry Ortega Adam Noshimuri Sgt . Duke Lukela Kamekona Tupuola Dr. Noelani Cunha Officer Tani Rey Junior Reigns