Charles Widmore
Sun traveled to Los Angeles from Korea when she is detained by Charles Widmore. He questions her motives for approaching him so disrespectfully, before asking what it is she thinks they have in common. Sun informs him that their only shared interest is in killing Benjamin Linus. While in Los Angeles, Sun contacts Kate, and lets her know she doesn't blame her for not finding Jin before boarding the helicopter; Kate did the right thing, and now she must do so again by protecting Aaron at all costs.