Alex O'Loughlin Steve McGarrett Actor Scott Caan Danny "Danno" Williams Actor Daniel Dae Kim Actor Grace Park Actor Josh Dallas Guest Star Mark Cunningham Guest Star Kevin Sorbo Guest Star Brian L. Keaulana Guest Star Nadine Velazquez Guest Star Walter S. Gaines Guest Star Kala Alexander Guest Star Shea Kauanui Guest Star Tanoai Reed Guest Star George Allen Gumapac Guest Star Aidan Laprete Guest Star Butch Helemano Guest Star Eddie Kaulukukui Guest Star Peter M. Lenkov Executive Producer Alex Kurtzman Executive Producer Roberto Orci Executive Producer Carol Barbee Writer Kyle Harimoto Writer Matt Earl Beesley Director