Claire Littleton is one of the middle section survivors of Oceanic Flight 815. She is Jack Shephard's half-sister, although she does not know this. She is the mother of Aaron Littleton who was born on the Island soon after the crash, and has done her best to take care of him. When she was seventeen, Claire was involved in a car crash which caused her mother to fall into a coma for five years, but in turn led her to meet her true father for the first time since he left. During her time on the Island, she entered an inconsistent relationship with fellow survivor, Charlie Pace; she was reluctant to let Charlie into Aaron's life because of Charlie's drug use and erratic behavior. Aaron was a focal interest point within the Others, and Claire was almost deceived into giving him away and on many occasions Claire's faith towards motherhood has been tested. Following Charlie's tragic death, Claire joined Locke's group. She left Locke's group with Aaron, Sawyer and Miles, and then followed her dead father Christian Shephard into the jungle. She was last seen with Christian in Jacob's lều, cabin bởi Locke.

# Claire, Jin and Sawyer are the only original major characters yet to leave the Island at least once. Jack, Kate, Sun, Hurley, Sayid, Locke and Walt all eventually end up on the mainland; Boone, Shannon, Charlie and Michael are deceased.
# Claire has met all of the main characters, except Daniel.
# Claire's tent has been destroyed as the SAT phone that Frank Lapidus threw out of the helicopter in "Cabin Fever" landed on it.
# Although brother and sister, Claire and Jack went on opposite sides in terms of staying on the Island hoặc leaving. Claire went with Locke, who is a man of faith, to stay on the Island while Jack, who is a man of science, decided to contact the freighter.
# In seasons 1, 2 and 3, Claire had consistently been the character with the lowest amount of episode appearances (living character bởi the end of a season). This is ironic since she has appeared in 10 out of 13 Season 4 episodes, the tied for the third highest amount of episode appearances in Season 4 (only Jack, Juliet, Hurley, Daniel and Kate have appeared in more).
# Claire had only one appearance in Season 5 ("The Little Prince"), consisting of archive footage from "Do No Harm".
# Claire was the một giây Flight 815 survivor to visit the interior of Jacob's lều, cabin and the only to use the lều, cabin as a "temporary home".
# Claire was originally intended to be the surrogate mother of her friends, Ruth and Stuart's baby.
# During an interview about the episode "Par Avion", Emilie de Ravin stated that the period in which the flashbacks occurred during this episode were based when Claire was 17. Since Claire is 22 on the Island, this indicates that the năm of the flashbacks during "Par Avion" was either late 1999 hoặc early to mid 2000.
# According to Hurley, Claire is very influential among the survivors. ("Left Behind")
# Claire has once been described bởi writers to be the tim, trái tim and soul of the survivors.
# Claire was the eighth character to ever have a flashback.
# Claire's episode count so far is 59 (as of Season 5), yet she is credited with 79 episodes.
# Claire is yet to appear in the 7th episode of a season.
# Claire was eight months pregnant when Oceanic 815 crashed.
# In the final moments of the first two season finales, Claire reconciling with Charlie is shown.

* Claire and Charlie were the last two main characters to be seen in Season 2.
* This is also shown in the next-to-last episode of Season 3, sealed with a Kiss and the last time they see each other; though it is not in the final moments, it is near the end of the episode.

# Claire came across a Death Adder while on a walkabout in Australia, in the Mất tích novel Endangered Species.
# So far, all of Claire's flashback episodes seem to have a pattern:

* Claire has only one centric episode per season. (except Season 4)
* All Claire-centric episodes have followed Sayid-centric episodes.
* Claire has not appeared in episodes directly preceding hoặc following her centric episodes.

# Claire's birthday is October 27 (The same ngày the Red Sox won the World Series).
# Claire's accident in the water is the way that Joanna died. They were both caught in some sort of riptide and swept out to sea. ("White Rabbit") ("Flashes Before Your Eyes")
# Claire believes in astrology. Her Sun sign is Scorpio; the eighth sign of the Zodiac.
# Claire has a model airplane on her bedside table.[1] ("Raised bởi Another")
# Claire is one of three characters portrayed bởi principal cast in Season 2 never to appear in the thiên nga (the other two being Walt and Shannon).
# We don't find out her name until "Walkabout".
# Not counting Boone (who was deceased bởi that time), she is one of only two of the original 14 main characters to not receive a flashback from her perspective in Exodus, due to it being deleted.