Alex O'Loughlin Steve McGarrett Actor Scott Caan Danny "Danno" Williams Actor Chi McBride Lou Grover Actor Jorge Garcia Jerry Ortega Actor Meaghan Rath Tani Rey Actor Taylor Wily Kamekona Actor Kimee Balmilero Dr. Noelani Cunha Actor Dennis Chun Sgt. Duke Lukela Actor Ian Anthony Dale Adam Noshimuri Actor Beulah Koale Junior Reigns Actor Kunal Sharma Koa Rey Guest Star Makenna James Bonnie Pearsen Guest Star John Clarence Stewart Hilo Guest Star Colin Cunningham Hester Guest Star Ryan Bittle John McGarrett Guest Star Eric Elizaga Young Duke Lukela Guest Star Jon Chaffin Damien Guest Star Ty Quiamboa Maleko Guest Star Erin Smith Young Doris Guest Star Christopher Amitrano Bo Akoni Guest Star Jason Brooks Owen Pearsen Guest Star Kimberly Estrada Detective Belden Guest Star Mia Adams Kiana Pearsen Guest Star Joseph Slaughter Ioane Guest Star Phillip Rios Passenger-side Cop Guest Star Revel Kolohe Sloboda Young Steve McGarrett Guest Star Al Waterson Store Owner Guest Star Brooke Lynne Alcuran Female Customer Guest Star Peter M. Lenkov Executive Producer Alex Kurtzman Executive Producer Roberto Orci Executive Producer Eric Guggenheim Executive Producer Paul Grellong Writer David Straiton Director