Alex O'Loughlin Steve McGarrett Actor Scott Caan Danny "Danno" Williams Actor Daniel Dae Kim Actor Grace Park Actor Jean Smart Guest Star Teilor Grubbs Guest Star Sidney S. Liufau Guest Star James Russo Guest Star Max Casella Guest Star Michael Copon Guest Star Faleolo Alailima Guest Star Helen Torco Guest Star Viliami Fehoko Guest Star Larry Bialock Guest Star Christina Souza Guest Star Peter M. Lenkov Executive Producer Alex Kurtzman Executive Producer Roberto Orci Executive Producer Carol Barbee Writer Kyle Harimoto Writer Paul Edwards Director