Alex O'Loughlin Steve McGarrett Actor Scott Caan Danny "Danno" Williams Actor Ian Anthony Dale Adam Noshimuri Actor Chi McBride Lou Grover Actor Jorge Garcia Jerry Ortega Actor Meaghan Rath Tani Rey Actor Beulah Koale Junior Reigns Actor Dennis Chun Sgt. Duke Lukela Actor Kunal Sharma Koa Rey Guest Star Anna Enger Ritch Layla Guest Star Nolan Hong Manager Guest Star Saint Thompson Bobby Akamu Guest Star James Unabia Banger 1 Guest Star Fernando Murguia Banger 2 Guest Star Vikram Mruthyunjayana ER Doctor Guest Star Laura Bayne ER Nurse Guest Star Kila Packett Dave Lockhart Guest Star Ben Villeza Guard Guest Star Peter M. Lenkov Executive Producer, Writer Alex Kurtzman Executive Producer Roberto Orci Executive Producer Eric Guggenheim Executive Producer, Writer Bryan Spicer Director