Alex O'Loughlin Steve McGarrett Actor Scott Caan Danny "Danno" Williams Actor Daniel Dae Kim Chin Ho Kelly Actor Grace Park Kono Kalakaua Actor Masi Oka Dr. Max Bergman Actor Terry O'Quinn Guest Star Tom Sizemore Guest Star Taylor Wily Kamekona Guest Star Teilor Grubbs Guest Star William Baldwin Guest Star Reiko Aylesworth Guest Star Dennis Chun Sgt. Duke Lukela Guest Star Maeve Quinlan Guest Star Taylor Cole Guest Star Karl Herlinger Guest Star David Lombard Guest Star Spam Laupola Guest Star Alex Kurtzman Executive Producer Roberto Orci Executive Producer Peter M. Lenkov Writer Paul Zbyszewski Writer Elwood Reid Writer Steve Boyum Director