Alex O'Loughlin Steve McGarrett Actor Scott Caan Danny "Danno" Williams Actor Ian Anthony Dale Adam Noshimuri Actor Meaghan Rath Tani Rey Actor Jorge Garcia Jerry Ortega Actor Beulah Koale Junior Reigns Actor Chi McBride Lou Grover Actor Katrina Law Quinn Liu Actor Taylor Wily Kamekona Actor Dennis Chun Sgt. Duke Lukela Actor Kimee Balmilero Dr. Noelani Cunha Actor Sonny Saito Masuda Guest Star Katie Wee Brooke Guest Star Paul S.W. Lee Dr. Paulson Guest Star Eddie Anderson SWAT Commander Guest Star Rob Morrow Cullen Guest Star Roland Nip Zhang Guest Star Grace Lee TV Anchor Guest Star Wes Zane Yakuza Leader Guest Star Hank Holliday Mayor Guest Star Dennis Takeshita Yakuza Leader 2 Guest Star Lehua Kalima Singer 1 Guest Star Ryan Souza Singer 2 Guest Star Peter M. Lenkov Executive Producer, Writer Alex Kurtzman Executive Producer Roberto Orci Executive Producer Eric Guggenheim Executive Producer David Wolkove Writer Matt Wheeler Writer Duane Clark Director