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 Shawn Mokuahi Garnett Flippa Guest Star Kekoa Kekumano Nahele Guest Star Costas Mandylor Vasili Shirokov Guest Star David Meunier Nikolai Malkin Guest Star Dennis Keiffer Yuri Petrov Guest Star Joe Toro Lead Agent Guest Star Andrea Elizabeth Sikkink Monica Shore Guest Star Stanislav Abdullin Submariner Guest Star Rebecca Teresia Young Woman Guest Star M. Jenna Rose Monica's Teenage Daughter Guest Star Peter M. Lenkov Executive Producer, Writer Alex Kurtzman Executive Producer Roberto Orci Executive Producer Eric Guggenheim Executive Producer, Writer Bryan Spicer Director