Character secrets/Season 1

Season 1

Recovering heroin addict

Recovering heroin addict
Summary: Charlie was first shown with heroin on flight 815. He later gave Locke the remainder of his stash. ("Pilot, Part 2")  ("The Moth") Who knows: Liam, Locke, Jack, Hurley, Claire, Sawyer, Mr. Eko Locke revealed he knew of Charlie's addiction. ("House of the Rising Sun") Charlie told his brother Liam that he had "did this to me", referring to his addiction. ("The Moth")

Fugitive, and murderer

Fugitive, and murderer

Summary: Kate killed Wayne whom she originally thought was her step-father after she found out that he was in fact her biological father, thus starting her life on the run. ("What Kate Did")  ("Tabula Rasa") Who knows: Everyone Mars warned Jack to watch out for Kate. ("Tabula Rasa") Hurley found her mugshot. ("Tabula Rasa") She told Sawyer she killed a man once, in a game of "I never". ("Outlaws") Sawyer exposed Kate's secret to everyone in an attempt to remove the suspicion that he poisoned Michael. ("Born to Run")

The white light

The white light
Summary: Like Eko, Locke looked into the black smoke, however, what he saw has never been disclosed. ("Walkabout") Who knows: No one, but he did generally describe his experience: He told Eko that he saw a white light just before Eko died. ("The Cost of Living")

Disabled

Disabled

Summary: Locke was in a wheelchair for four years before the crash, but since he was pre-boarded prior to anyone else getting on the plane, no one knew of his disability. After the crash, he could walk. ("Walkabout")  ("Pilot, Part 1") Who knows: Boone, Rose, Sawyer Walt said to Michael "Mr. Locke said a miracle happened to him." How much Locke elaborated on this fact to Walt is unknown. ("Tabula Rasa") Locke revealed his secret to Boone just before he is injured exploring the drug smugglers' plane. Boone died before telling anyone Locke was paralyzed. ("Deus Ex Machina")  ("Do No Harm") Locke wheeled up to Rose in the airport to pick up the medication she had dropped. Later when he told her that it's going to take four weeks to recover from the blast door crushing his legs, she replied "You and I both know it's not going take that long." ("S.O.S.")

Knows English

Knows English

Summary: In Sun's first days on the Island, no one, not even Jin knew that she spoke English, but people slowly learned her secret. Sun learned English, from Jae Lee, prior to boarding Flight 815 as part of her plan to leave Jin. ("House of the Rising Sun")  ("The Whole Truth") Who knows: Everyone Sun revealed her secret first to Michael, to explain that Jin assaulted him for being in possession of Jin's watch, with Jin believing Michael had stolen it. ("House of the Rising Sun") Kate discovered Sun's secret based on her reactions to Kate's words while they are gardening. ("Hearts and Minds") All of the survivors finally learned about her ability to speak English when she defended Jin against accusations that he burned the first raft. ("...In Translation")

Torturer

Torturer

Summary: Sayid has a history as a torturer. ("Confidence Man")  ("Solitary") Who knows: Jack, Sawyer, Kate, Ana Lucia, and Ben Sayid told Sawyer and Jack that he had experience torturing people, right before Sayid tortures Sawyer. ("Confidence Man") In regards to Sawyer's torture, Kate says "Well, accidents happen when you torture people, Jack." ("Solitary") To Ana Lucia, "I've tortured many men -- men whose voices I still hear in the night." ("Collision") To Ben, "My name is Sayid Jarrah, and I am a torturer." ("One of Them")

Hurley's real name

Hurley's real name

Summary: Hurley's real name is Hugo. ("Raised by Another") Who knows: Jack, Locke, Michael, Sawyer and Kate Hurley told Jack that "Hurley" isn't his real name, it's Hugo Reyes, but won't tell Jack why he's called Hurley. ("Raised by Another") Locke knows, but doesn't explain how. He might know it from the manifest. ("The 23rd Psalm") The Others gave Hurley's name to Michael, but the list said "Hugo". This indicates that Michael already knew Hurley's real name, as the only name on the list that he didn't recognize was James Ford. ("Three Minutes") Sawyer and Kate hear the Others refer to Hurley as Hugo. ("Live Together, Die Alone, Part 1")

Sex between step-brother and sister

Sex between step-brother and sister
Summary: Boone had sex with his step-sister, Shannon, shortly before Flight 815. ("Hearts and Minds") Who knows: Shannon, Boone Shannon seduced her step-brother. ("Hearts and Minds")

Kate was married

Kate was married
Summary: Kate was once married. She was married to Kevin Callis. ("Outlaws")  ("I Do") Who knows: Sawyer Told Sawyer in a game of "I never". ("Outlaws")

Sawyer is a murderer

Sawyer is a murderer
Summary: Sawyer killed Frank Duckett for revenge (mistaken person). ("Outlaws") Who knows: Kate Known by Kate that he killed a man (no details given), after a game of "I never". ("Outlaws")

"Enforcer" for Mr. Paik

"Enforcer" for Mr. Paik
Summary: Jin was hired as an "enforcer" for Sun's father, Mr. Paik. ("...In Translation") Who knows: Sun Sun knows he worked for her father, and saw him with blood on his hands after a job. ("...In Translation")

Multi-millionaire

Multi-millionaire

Summary: Hurley won the Mega Lotto Jackpot by playing the Numbers he got from Leonard. ("Numbers") Who knows: He discussed the topic with several people: Owes Walt $83,000 he bet playing Backgammon. He assured Walt, "you'll get it." ("All the Best Cowboys Have Daddy Issues") Told Charlie his net worth, but Charlie said "I bare my soul, and all I get is bloody jokes." ("Numbers") On the raft, Sawyer read the message Hurley wrote for the Bottle, but didn't recognize Hurley's real name. (He says, "Who the hell is Hugo and how's he got 160 million dollars to leave to his mom?") Note that when the Others captured them, Ms. Klugh addressed Hurley as Hugo in front of Sawyer, so he may have made the connection. ("Exodus, Part 2") Hurley tells Jack, and follows it with "I'm not crazy." Jack responds "I'm not saying you are." ("Man of Science, Man of Faith")

Mental patient

Mental patient
Summary: Hurley feels responsible for the death of two people that resulted from an accident where a dock collapsed. After the accident, he was admitted to the Santa Rosa Mental Health Institute. ("Numbers") Who knows: Jack, and Libby Told Jack of his psych ward stay. ("Man of Science, Man of Faith") Libby was also in the psych ward. ("Dave")

Helped poison Jin

Helped poison Jin
Summary: Kate urged Sun to poison Jin. ("Born to Run") Who knows: Sun Jack suspected, but Sun told him that it was her alone. ("Born to Run")

Sawyer's real name

Sawyer's real name

Summary: Sawyer's real name is James Ford. ("Exodus, Part 1") Who knows: Locke, Hurley, Jack, Michael, and Cassidy Hurley and Jack knew from reading the manifest, but the name is not spoken. ("Raised by Another") Locke told Sawyer he knows his real name from the manifest. ("The Hunting Party") Michael learned his real name from Ms. Klugh. ("Three Minutes") Cassidy learned when she pressed charges. ("Every Man for Himself")

Poisoned Michael

Poisoned Michael
Summary: Michael gets sick and Jack determined that someone poisoned his water bottle. Although Kate and Sawyer are early suspects, Sun is the one who did it, with the urging of Kate. ("Born to Run") Who knows: Jack, Kate Jack confronted Sun, who confessed she didn't want Jin to leave, and "only used enough to make him sick." Michael inadvertently drank from Jin's water. ("Born to Run")