Disclaimer: Most of the following information was gained from watching all the episodes and the recap specials. There are things that have come to light throughout the seasons and may be considered spoilerish for anyone who has not seen all the episodes. Some information has come from official announcements by TPTB. That information is included here for clarification and not to provide spoiler information (i.e.: the spelling of Ms Klugh last name). Based upon "Behind the scene" interviews and notes the seating assignments are based upon a 3x3x3 plane design.

Font color Code

Blue - A Passenger on Flight 815
Dark Orchid - Dharma / Others personnel
Dark Slate Blue - Off island influence
Red - Islander
Black - The Whispers
Dark Orange - Flashback character with one connection
Green - Flashback character with multiple connections Strike - Dead

Fuselage People:

Jack Shepard

• Margo Sheppard (Veronica Hamel): Jack’s mom
• Christian Sheppard (John Terry): Jack’s dad. Claire's dad (from an affair). Chief Surgeon at St Sebastian Hospital in LA. Alcoholic (was trying to get sober). Operated on Beth while impaired. Jack got Christian stripped of his medical license. Met Ana-Lucia in an airport bar. Invited Ana-Lucia to go to Australia as a "bodyguard". Pays the mortgage for Lindsey - has a daughter by her. Had a drink with Sawyer in Sydney just before he died. Died of a heart-attack in Australia. Christian's Board
• Sarah (Julie Bowen): Was in a head on car accident with Adam Ruthaford. Jack operated on her. Was a "miracle" that she could walk again. Did not know Jack until he operated on her. Later married him. Teacher? Left Jack because she couldn’t deal with Jack always needing to "fix" things. Met someone else.
• Lindsey (Gabrielle Fitzpatrick): Lives in Sydney Australia. Knows Christian Sheppard. Has a daughter with him.
• Kevin (Anson Mount): Sarah's first fiancée.
• Gabriela (Monica Barladeanu): Looking for a miracle to save her father Angelo. Heard of Jack's miracle cure of Sarah. Jack couldn't save Angelo. Flirted / kissed Jack. Gabriela Thread
• Beth: The women whom Jack operated on after Jack’s father messed up. Was pregnant. Died on the operating table.
• Nurse (Julie Ow): Looked in on Locke after his kidney surgery. Helped Jack with a patient.

James "Sawyer" Ford

• Frank Sawyer Destroyed Sawyer's family by conning them out of money. Appears to be the same as Anthony Cooper. Killed by Sawyer.
• David & Jessica: (Michael DeLuise & Kristin Richardson): A mark of Sawyer. Sawyer backed down when their son walked in the room.
• Hibbs (Robert Patrick): One time partner of Sawyer. Tricked Sawyer into killing Frank Duckett<
• Frank Ducket (Jeff Perry): Shrimp stand operator in Australia. Owed Hibbs some money? Was killed by Sawyer.
• Cassidy Philips (Kim Dickens): A "long con" of Sawyer. Helped Sawyer do some small cons. Was conned out of $600,000 by Sawyer. Pressed charges. Has a daughter, Clementine, with Sawyer. Turned to selling fake gold necklaces. Later met Kate. Helped Kate talk to her mother. Lives in Albuquerque?
• Gordy (Kevin Dunn): Sawyer's partner
• Munson (Ian Gomez): New Prisoner with Sawyer. Stole $10 million from the government. Befriended by Sawyer. Was conned by Sawyer to divulge location of money (in Sawgrass Florida). Sawyer turned in the information in order to get out of prison early.
• Mary Jo (Brittany Perrineau): Lotto employee. Knows Sawyer. Announced Hurley's winning lottery numbers.

Katherine "Kate" Austen

• Diane Austen Jansen (Beth Broderick): Kate’s mom. Was a waitress. Served Sawyer. Lived in Cedar Rapids, Iowa. Turned Kate in for blowing up Wayne. Has cancer. Admitted to St Francis Hospital. Terminally ill? Served Sawyer lunch at the diner.
• Sam Austen (Lindsey Ginter): Kate’s step-dad. Highly decorated officer in the Army - Ranger battalion. At some point was stationed at Fort Lewis, Washington State. Served in first Gulf War. Met Sayid in passing during first Gulf War.
• Wayne Jansen (James Horan): Kate’s biological dad. Drunk and abusive?. Lived in Cedar Rapids, Iowa. Kate killed him by blowing up the house. Time line note: Diane and Sam were married. Diane became pregnant four months before Sam came home from Korea. Sam and Diane divorced when Kate was 5. Diane later married Wayne who was Kate's biological father.
• Tom Brennan (Mackenzie Astin): Kate’s childhood sweetheart. Buried a time capsule with Kate on August 15, 1989 - had his favorite toy airplane. Doctor at St Francis Hospital. Lived in Iowa. Married to Rachel, had a son, Conner. Was killed when trying to help Kate escape.
• Ray Mullen (Nick Tate): Farmer in Australia. Wife died a few months back. Has prosthetic right arm. Helped Kate, later turned her in.
• Kevin Callis (Kevin Fallen): Mother’s name Suzanne. Works for the Miami Police Department. Married Kate (under the false name of Monica). Was going to take Kate to Costa Rica honeymoon. Was drugged by Kate before she told him the truth.

John Locke

• Anthony Cooper (Kevin Tighe): Locke’s dad. Likes to hunt a lot. Used Emily to help conned Locke out of a kidney. Appears to be rich. Conned someone out of $700,000. Needed Locke to get money out of safe deposit box. Faked his own death. Pushed Locke out of window. Was trying to con Peter Talbot's mom. Used fake name Adam Seward from Ontario, Ted MacLaren, Tom Sawyer and Louis Jackson. Apparently the same man that conned Sawyer's mother. Was in a car accident in Tallahassee, woke up on the island. Killed by Sawyer
• Emily Annabeth Locke (Swoosie Kurtz): Born 10/15/1940. Locke’s mom. Was a patient at Santa Rosa Mental Institute: admitted 10/5/1992 and self admitted 5/12/1995? Helped Anthony con Locke out of a kidney.
• Helen (Katey Sagal): Locke’s love interest. Met Locke at a anger management session (after Locke gave up kidney). Left Locke after he wouldn't give up his infatuation with his father.
• Helen (a.k.a. "phone Helen"): possible a phone sex operator whom Locke only called Helen. Locke tried to meet her in person.
• Jimmy Bane (Theo Coumbis): Looking for Anthony Cooper.
• Eddie (Justin Chatwin): Hitchhiker picked up by Locke - Said he was headed to Eureka California. Rookie cop that manipulated Locke. Befriended and then used Locke to infiltrate marijuana growing operation.
• Randy Nations (Billy Ray Gallion): Was Hurley's boss at Mr. Clucks and Locke's boss at the box company. Hurley became Randy's boss after Hurley bought Mr Clucks.

• Carmen Reyes (Lillian Hurst): Hurley's mom. Born in September?
• David Reyes (Cheech Marin): Hurley's mom. Left for Vegas when Hurley was a kid. Returned 17 years later after Hurley won the lottery
• Johnny (DJ Qualls): Best friend of Hurley. Worked together at Mr. Clucks. Hooked up with Starla. Johnny Thread
• Starla (Marguerite Moreau): Works at record store where Hurley hangs out. Appears Hurley has a crush on her. Hooked up with Johnny. Starla Thread
• Leonard Simms (Ron Bottitta): In the Navy. Stationed with Sam at a listen post in Kalgoorlie, Australia . Got the numbers from Sam 16 years ago while stationed together. Ended up in the psyche ward at Santa Rosa Mental Institute.
• Sam Toomey: In the Navy. Married to Martha. Heard mysterious numbers transmission 16 years ago while stationed at a remote listen post in Kalgoorlie, Australia. Used numbers a couple of days later to win $50,000 in a bean counting contest. Thought numbers were cursed . Killed himself 4 years ago to get away from curse.
• Martha Toomey (Jayne Taini): Married to Sam. Living in Australia in the middle of nowhere. Lost her leg in a car accident the day Sam won the contest.
• Dr Curtis (Dann Seki): Resident doctor at Santa Rosa Mental Institute.
• Dr Brooks (Bruce Davidson): Hurley's doctor at Santa Rosa. Knew Libby?
• Dave (Evan Handler): Hurley's imaginary friend / alter Ego while at Santa Rosa.

• Nadia Abid-Jazim (a.k.a. "Noor") (Andrea Gabriel): From Iraq. Sayid’s love interest before Shannon. Was tortured by Sayid. Sayid later helps her escape. While being mugged in England, Charlie helped her. Locke inspected a home she was buying. Lives in California.
• Essam (Donnie Keshawarz): Sayid's former college roommate at Cairo University. Has a degree in philosophy. Killed himself when Sayid tryied to turn him in for being a terrorist.
• Tariq (Marc Casabani): Sayid's Commander? Sayid tortured him on behalf of the Americans.

• Lindsey (Gabrielle Fitzpatrick): Claire's aunt. Does not like Christian Sheppard.
• Thomas (Keir O'Donnell): Claire's ex-boyfriend. Father of Aaron. Left Claire half way through the pregnancy. Was an artist.
• Arlene and Joseph Stewart (Lisa Fraser & ?): Couple in Melbourne who were going to adopt Claire's baby.
• Richard Malkin (Nick Jameson): Psychic who warned Claire not to give her baby up for adoption. Claire went to see him with Rachel. He convinced her to fly to LA. Married to Joyce. Has a daughter Charlotte who apparently drowned and came back to life. Confessed to Eko he was a sham and to stay away from his daughter.

• Megan Pace (Sammi Davis): Charlie’s mom. Bought Charlie a piano as a Christmas gift. Otherwise appears poor. Was hoping Charlie would help the family with music career. (Not to be confused with Liam's daughter which is also named Megan).
• Simon Pace (John Henry Canavan / Robin Atkin Downes): Charlie’s dad. Taught Charlie to swim. Butcher?
• Liam Pace (Neil Hopkins): Charlie’s brother. Lead singer in Driveshaft. Got Charlie hooked on heroin. Liam sold Charlie's piano to pay for move to Australia with his wife Karen and daughter Megan (Uncle gave Liam a job). Has cleaned up since moving to Australia. Has given up all interested in reuniting Driveshaft.
• Lucy Heatherton (Sally Strecker): From Knightsbridge England. Dated Charlie. Got Charlie a job as a copier salesman at her father's office.. Charlie robbed her father - Francis Price Heatherton.

• Mr. Kwon (John Shin): Jin's (adoptive?) father. Fisherman from a poor village.

• Mr. Paik (Byron Chung): Sun's father. Apparently very wealthy and powerful. Owns Paik Heavy Industries and Paik Automotive. Mob type organization?
• Mrs Paik (June Kyoto Lu): Sun's mother. Tried to arrange a date with Jae Lee for Sun.
• Jae Lee (Tony Lee): Son of a hotel owner. Was planning to marry an American girl from Harvard - didn't work out. Was set up to meet Sun. Was teaching Sun to speak English, without Jin's knowledge. In love with Sun. Appears to have committed suicide because of affair with Sun (may have been murder, but no proof)
• Dr. Je-Gyu Kim (Greg Joung Paik): Fertility doctor. Originally told Sun that she couldn't have kids. Later confessed in private to her that it was Jin that couldn't have kids. Lied to Sun about Jin because he was afraid of Sun's father.
• Popo: The dog Jin stole and gave to Sun Popo Thread

• Susan Lloyd (Tamara Taylor): Walt’s mom. Lawyer. Moved around the world. Married to Brain Porter. Knows international law. Lived in Amsterdam, Italy , and lastly in Australia. Died of a blood disorder.
• Brain Porter (David Starzyk): Walt’s step-dad. Lawyer. Moved around the world. Married to Susan Lloyd. Gave up rights to Walt right after Susan died.

Vincent (Madison): Brian's dog (Walt's step-dad's dog). Yellow lab. Traveling in the cargo hold. Vincent Thread

Rose

• Issac (Wayne Pyram): Faith healer form Uluru Australia. Channels the land’s energy to heal. Couldn't heal Rose.

• Adam Rutherford Married to Sabrina Carlyle. Shannon’s dad. Boone’s step-dad. Died as a result of a car accident with Sarah.
• Laurent Child of Shannon's love interest in St Tropez France. Watched cartoon about a fish over and over again.
• Bryan (Charles Mesure): Shannon's boyfriend in Australia. Took the payoff money Boone offered to leave Shannon alone.

• Sabrina Carlyle (Lindsay Frost): Boone’s mom, Shannon’s step-mom. Married to Adam Rutherford. Owns a wedding business. When Adam died, Sabrina cut ties with Shannon. Meet Jack at the hospital where Adam died.
• Theresa Childhood nanny of Boone. Died falling on the stairs when Boone was 6.

Sullivan (Scott Paulin): Had hives and likes to play golf.

SBSSG (a.k.a. "Sexy Blue Striped Shirt Girl") (Faith Fay): Appears to be friendly with all the survivors. Little else know. Seen at the airport same time as Jack. SBSSG Thread

Richard (a.k.a. "Asian Cowboy") (Bryan Sato): Seems to be friendly with all the survivors Asian Cowboy Thread

Craig (Chris Candella): Original survivor

Jerome (Jim Mazzarella): Original survivor

Neil: Frozen yogurt / Frogart salesman. Original survivor Neil Thread

Tracy: From Fresno, CA. Married, 2 kids. Sleeping with Steve?

"Turbine Man" (Frank Torres): Originally survived the crashed. Sucked into turbine.

Larry: Seems to be creeping Janelle out

Harold Wollstein: Original occupant of seat 23C. Did not survive the crash.

Judith Martha Wexler: From Denton, Texas. Didn't survive crash

Steve and Kristen: Engaged. Didn’t survive. Sitting a few rows behind Claire.

Emmanuel Rafael Ortiz: Passenger on flight 815 that didn't survive. Possible had children.

Millicent Louise D'Agostino: From Teaneck, New Jersey. Didn't survive

Flight 815 Pilot (Greg Grunberg): Bad pilot - 1000 miles off course. Killed by "island monster"

Man & Women: Pair of bodies found underwater still in their seats. Possible crew members of flight 815. Had the US Marshall's locked case wedged under the seat.

Tail Section People:

Mr Eko

• Yemi (Adetokumboh M'Cormack): Eko’s brother. Priest in Nigeria. As a child he was almost kidnapped by rebel soldiers. Eko took Yemi’s place. Later tried to save Eko, but was killed in the process. Eko's partner "Goldie" dragged Yemi onto a beachcraft and flew off, leaving Eko behind.
• Goldie (Ronald Revels): Eko's partner. Tried to smuggle heroin out of Nigeria dressed as a priest.
• Charlotte Malkin (Brooke Anderson): Richard & Joyce Malkin's daughter. Apparently died as a result of drowning. Eko was sent to investigate her "miracle" survival. Saw Yemi while "dead". Told Eko that Yemi believed in him.

Ana-Lucia Cortez

• Captain Teresa Cortez (Rachel Ticotin): Ana's mom and Captain of Ana's police squad.
• Jason McCormack (Aaron Gold): Shot Ana 4 times in the chest when she was pregnant. Caused Ana to loose her baby. Later killed by Ana as revenge.
• Matthew Reed (Rick Overton): Ana's police psychiatrist. Ana had to go to him after being shot by Jason.

Pam: Did not survive the crash. Traveling with her husband.

Pam’s Husband: (Jon Sakata): Originally seen looking for his wife Pam. Possible abducted by "Others".

Island People:

Desmond David Hume

• Charles Widmore (Alan Dale): Owner of Widmore Industries / Corporation. Doesn’t like Desmond. Prevented Desmond from marrying Penny. Intercepted all of Desmonds letters to Penny. Convinced him to stay away from her. Was hosting an around the world sailing race that Desmond entered.
• Ms. Hawking (Fionnula Flanagan): Seen in a picture on the desk of Brother Campbell. Later told Desmond that he can't change his past (possibly in a dream).
• Kelvin Inman (Clancy Brown): Told Sayid his name was Joe. Convinced Sayid to torture Tariq. Commander of Sam Austen. Was a Spook (in the CIA?). Apparently became a resident of the Swan hatch - appears not to be part of Dharma. Uncertain how he got on island. Helped Rasinky make to glow-in-the-dark map. Knows how to initiate emergency lock down. Rescued Desmond. Convinced Desmond not to go outside. Was secretly repairing Desmonds boat so he could escape island. Accidentally killed by Desmond. Uncertain if these are two different people or the same person (written here as the same person). Possible Dharma employee.
• Rasinky: Former resident of the Swan bunker. Partner with Kelvin. Created Blast Door map. Killed himself. May or may not have been working for Dharma.

The Nigerians: From a Beachcraft airplane crash from 2 to 10 years ago (As estimated by Locke). (See Yemi & Goldie in Eko’s Flashback section)

Slaves: Skeletal remain of possible slaves from Africa found on the sailing ship the Black Rock. Headed for a mining colony? As assumed by Locke

Dharma / "Hostiles" / "Others"

Benjamin Linus (a.k.a. "Fake Henry Gale)

• Annie (Madeline Carroll): Child on the island. Childhood sweetheart of Ben. Gave him a present that represented her and Ben so they would never have to be apart. Presumed died when the rest of Dharma was killed.

Roger Linus

• Emily (Carrie Preston): Married to Roger. Gave birth to Ben at 7 months pregnant while hiking. Died during childbirth. Later, Ben sees an image of his mom on the island.

• Rachael (Robin Weigert): Juliet's sister. Lives in Miami. Had caner. Became sterile from kemo treatments. Juliet helped her conceive a child. Cancer came back and Ben / Jacob cured her? Now has a son - Julian.

Amelia (Julie Adams): Part of the Island Book Club

Adam (Stephen Semel): Part of the Island book club.