Mira Furlan as Danielle Rousseau
- Played by Mira Furlan
BEFORE THE CRASH
- French woman, though possibly not from France
- Her and her science expedition were lured to the island by the Distress Signal broadcasting the Numbers
- Was seven months pregnant when her expedition shipwrecked
- Stranded on the island for 16 years
- Had a child named Alex who was taken by the Others a week after the birth
- At this time there was a large plume of black smoke on the other side of the island
- Was the wife (or lover?) of Robert, whom she shot and killed
- Thinks the island is 3 days out from Tahiti
- Knows of the Others, and their Whispers
- Possibly killed her entire expedition after they contracted the Sickness
- Had enough guns and ammo to survive for the 16 years on the island in a bunker possible dug by her and her crew
- Knew of the Black Rock and the Dark Territory
ON THE ISLAND
- First encountered by Sayid after he discovers a cable extending from the ocean into the jungle, he stumbles into a snare trap, likely set up by Danielle, who subsequently cuts him down and captures him.
- Initially suspects that Sayid may know something about Alex, asking him "Where is Alex?" in a variety of languages.
- Tortures Sayid with electricity
- Sedates Sayid and places him in a chair so he can repair her music box
- Questions Sayid about the picture of Nadia
- Tells Sayid about her science expedition
- Asks if Sayid thinks she is insane, he replies that she has simply been alone for far too long.
- When Sayid asks if it is the Monster, she replies that there is no such thing as monsters.
- Sayid steals her maps and notes about the island
- After discovering that her notes contain the same numbers that he had used to win the lottery repeated several times, Hurley, claiming that he wants to get a battery for Michael, heads into the jungle with Charlie, Jack, and Sayid in tow. His real motive, however, is to find Danielle in the hopes that she can explain the meaning of the numbers to him, giving him insight as to why they may be "cursed".
- After she shoots at Hurley and Charlie, she catches Hurley and holds him at gunpoint, at which point he asks her about the Numbers
- She admits that she does not know what they mean. Instead, she explains to Hurley that it was the numbers that brought her expedition to the island. Sixteen years earlier, the numbers were being broadcast by the radio tower on the island
- Hurley gives her a giant hug (which may be her first real human contact in 16 years) after she agrees with his assessment that they may be cursed
- Gives a battery to Hurley, along with a message to say "Hey" to Sayid
- Apparently rescued Claire from Ethan, but perhaps with the goal of trading Claire for her child Alex
- Was scratched by Claire who then escaped from her
- Leads an expedition (Jack, John, Kate, Hurley and Leslie Arzt) to the Black Rock in order for them to find dynamite to blow up the hatch, leaves them as soon as they arrive
- Steals Claire's baby, Aaron in order to attempt a trade for her child Alex, by bringing him to the plume of black smoke, but when she gets there no one is at the fire, and she's not sure who lit it
- Charlie thinks she lit the fire herself as part of her plan
- Returns Aaron to Sayid and Charlie