Walter Lloyd是大洋航空815航班機身部份的生還者。他被不同的人物指是「與眾不同」的，而且他看來的確是有一些特别的能力，include telekinesis, astral projection, and dimensional transportation。他曾被the Others拐走，and was returned to his father in a prisoner exchange for Jack, Kate, Sawyer, and Hurley. Walt and Michael's whereabouts and fate are currently unknown, after they left the Island on a motor boat with the instructed heading of 325.
Walt於1994年8月24日出生，他是Michael Dawson和Susan Lloyd的10歲大兒子。His mother Susan rejected marriage with Michael, who was at that time a construction worker and struggling artist. While Walt was still a baby, Susan accepted a job offer at Plum International, and moved to Amsterdam, taking Walt with her. (1x14)
Two weeks before Walt's second birthday, Susan returned to New York, after Michael was hit by a car, which occurred right after an argument the two had on a public pay phone. Susan updated him about her and Walt's life, and revealed that she is planning on marrying her boss. She also said that the three of them would be moving to Rome, Italy, at the end of the month. Susan asked Michael the unthinkable - to give up his parental rights to Brian Porter, who would adopt him. Michael refused, and a legal battle began between the two, as Michael hoped he could get his son back. (1x14)
During the process, Michael saw he has no chance against Susan and dropped the lawsuit, after Susan convinced him that she and Brian could give Walt a better life. Susan brought Walt to New York, where he reunited with his father. The two-year-old boy hugged his emotional father, who gave him a stuffed polar bear. Michael believed that this would be the last time he would see his son. (2x02)
Eight years later, Brian tracked down Michael in New York, and told him that they had moved to Australia and whilst there, Susan had died of a "blood disorder". Brian arrived in New York the day after Susan's death. He pleaded with Michael to take custody of Walt once more, and gave him tickets for the flight to Sydney and back, plus extra money for travel expenses. Brian had never wanted to be a father, and had only adopted Walt to appease Susan. Brian also admitted that was afraid of Walt, saying: "There's something about him. Sometimes, when he's around, things happen. He's different somehow." (1x14)
One thing that made Brian suspect Walt was "different" happened shortly before his mother Susan's death. As Brian and Susan were discussing her recently diagnosed illness, Walt was studying a book of Australian native birds, seemingly oblivious to the conversation happening in the room. He wanted Brian to look at the entry for the Australian Bronze cuckoo. When Brian ignored him, Walt became angry and insistent, demanding "You're not looking!" Suddenly a bird slammed into the sliding glass door, killing itself on impact. It was an Australian Bronze Cuckoo. (1x14)
Walt's best friend is Brian's Labrador Retriever, Vincent, because he is the only one Walt feels comfortable talking to. When Michael picked up Walt, Michael told Walt that Brian said that he could keep Vincent, and that it was Michael's choice to take custody of him because Brian really wanted to remain Walt's father. In fact, Michael took Vincent without Brian's permission, and Brian did not wish to have custody of Walt any longer. (1x14)
From the beginning of their newly formed relationship, Walt resented Michael. On the morning of their flight back to LA, Walt woke up in their hotel room and turned the TV on. Michael asked Walt to keep the volume on low, so Walt antagonistically increased the volume. When Michael turned it off, Walt stormed out of the room screaming that Michael was not his father, and almost made it to the elevator before Michael grabbed him. (1x23)
Without having any apparent knowledge of "the Hatch," Walt appeared to exhibit some form of psychometric clairvoyance: after touching Locke's arm, he told him ominously: "Don't open it. Don't open that thing." (1x22)
Walt secretly set fire to the initial raft that Michael built, mirroring Michael's burning of the comic book. Locke was the only person on the Island who realized this and Walt admitted to him, "I like it here." The day before the second raft was set to be launched (a raft he helped to build with his father), Walt confessed to Michael that he was responsible for burning the first raft, because he did not want to leave the Island. Michael told him that they didn't have to go, but Walt replied solemnly, "Yes, we do." (1x17)
在木筏上，Walt and his companions ran into another boat. Instead of rescuing them, however, the crew of the other boat kidnapped Walt, destroyed the raft, and left Michael, Jin, and Sawyer in the sea. It was later revealed that the kidnappers were part of the Others. (1x24)
Not long after he was taken off the raft, a water-drenched Walt appeared before Shannon, who had just followed a fleeing Vincent into the jungle. Shannon heard him whisper incomprehensibly, which has been ascribed to reversed or backwards speech. The translation of the speech is reportedly "Push the button. Don't push the button. Bad." Whether it was actually Walt or a vision is unclear. (2x01)
Three nights later, Walt again appeared to Shannon, this time in the new tent that Sayid had just made for her. Walt was again dripping wet and spoke in reversed speech, "They're coming and they're close".  Sayid returned to Shannon's screams, but Walt had disappeared and Sayid did not believe her account. The next day, Shannon resorted to using Vincent to help find Walt, with the Labrador leading her into the jungle. A doubting Sayid followed her, contesting that Walt was still on the raft, but Shannon revealed that they had found the message bottle. Later in the jungle, the two heard the whispers and Walt appeared wet with his finger to his lips, saying, "Shhh". Sayid saw him this time, and when Walt walked back into the jungle, Shannon followed him, only to be accidentally shot by Ana-Lucia. (2x06)
At some point after he was taken off the raft, Walt was held in Room 23 at the Hydra compound by the Others. Walt posed a greater threat to them than they expected, as he had been doing something unspecified that frightened them so that they would not go in to see him. Ben responded to a particular situation with a blaring alarm and people in commotion, and Juliet suggested that Ben take responsibility and bring Walt back to Michael. Ben refused, saying Jacob wanted him there, and that Walt is important and special. After Ben denied Walt's dangerous nature, Juliet took him outside to show what Walt had done: a group of dead birds were lying on the stairwell beneath a boarded up window. (mx06)
While examining the equipment within the the Swan, Michael discovered a message reading "Hello?" on the station's computer screen. Typing in a response and identifying himself by name, Michael was shocked when the other party returned with "Dad?". (2x09)Convinced that the user on the other end was Walt, Michael continued communication with him. When he inquired if he was alone, Walt responded that he couldn't talk long, because "they're coming back soon." Walt concluded by telling Michael he needed to go somewhere, but cut off the communication when Jack entered. (2x10)
When Michael went after the others to retrieve Walt, he was captured. An Other who called herself Ms. Klugh asked Michael, "Has Walt ever been somewhere he wasn't meant to be?". Later, Michael demanded to see his son, to make sure he was still alive. Ms. Klugh shouted for an Other by the name of Pickett to bring him inside, and gave them three minutes together. (2x22)
Walt inquired about Vincent's health and told Michael that the Others made him "take tests" and that "they're not who they say they are - they're pretending". Ms. Klugh became agitated and threatened to put Walt in "the Room" again. (This room was later revealed through a mobisode to be Room 23, the same room that Karl was apparently being brainwashed in when Sawyer, Kate and Alex rescued him.) Walt instantly froze up at the mention of this, and Ms. Klugh told him to leave. Ms. Klugh proposed a deal: if Michael brought them Jack, Kate, Sawyer and Hurley, they would let Michael and Walt go free. (2x22). Later, Juliet commented to Michael that Walt was special, that he wasn't an ordinary boy, and that's why she was worried about him. Juliet was glad that Michael was going to get Walt away from the Island. (mx04)
After Michael led Kate, Hurley, Jack and Sawyer to the Others to complete his deal for Walt, Ben returned the boy as promised, commenting that he was "more than we bargained for." Michael was also given a boat and a bearing of 325 to an apparent escape. (2x23)
- Walt's episode count so far is 26.
- Walt was the eleventh character to ever have a flashback.
- Walt has worn the same clothes in every one of his appearances since the end of Season 1.
- While playing backgammon with Hurley, Walt said, "My dad Brian said I was the luckiest person he ever knew." Hurley won 17th place in a backgammon tournament and owed Walt as much as $83K for losing to him. (1x11)
- Sawyer told him, "You have one hell of an imagination, kid" in reference to something Sawyer was doing. (1x11)
- Walt was named after his grandfather. (1x14)
- His picture was displayed under the word "MISSING" on the milk carton Hurley was holding in his dream; Hurley did not appear to notice the picture, nor did he have the knowledge yet that Walt was missing. (2x04)
- In the special feature Access: Granted on the Lost: The Complete Third Season (DVD) Blu-ray edition, Damon Lindelof and Carlton Cuse said that it was Walt who communicated with Michael on the Swan computer. (2x09)
- Tom said that while in their care, Walt was safe, along with Zack and Emma. Tom also said that Walt is "special". (2x11) (Regularly spoken phrases)
- Ben once said that the Others would never give Walt back, but they did. (2x19) (2x23)
- In "", "", and "", Malcolm David Kelley is shot at odd angles to disguise his obvious growth.
- Something major has occurred involving Walt in the first three season finales: he was kidnapped in "", escaped the Island in "", and returned in "".
- 如對以下的未解決謎題有任何推論，請到 去討論
- The Others替他做了甚麼測試? (2x22)
- 为什么Walt不想Locke打开the Hatch in the first place?
- 他怎么和 Swan computer电脑交流的?
- Has Walt been subjected to the video in Room 23?
- Reversed Speech.mp3 (40kb) Walt's words from "", played in reverse.
- On the Oceanic homepage, the words 'THE BOY' hidden in the pull down menus suggest that Walt is in fact not a red herring at all as others claim, but is very important.
- This is because of a hidden message: If you go to the Oceanic page, hit 'track flight' on the toolbar and track flight by number, you'll find that the second flight down (flight 572) holds the message 'Give us THE BOY'.