Season: 1–6, Episodes: 92, Faction: Survivors
Kwon Jin-Soo (Hangul: 권진수, Hanja: 權眞秀), more commonly known as Jin, was married to Sun-Hwa Kwon and was one of the middle section survivors of Oceanic Flight 815. Knowing no English, Jin initially isolated himself and Sun from the other survivors, and when he found she’d secretly learned the language, he felt betrayed and briefly left her. He later learned English himself and involved himself more in group activities. His time on the island restored his marriage, which his violent, corrupt job had nearly ruined. He even managed to conceive a child with his wife, even though he’d been infertile. He also contributed through his combat skills, which he’d learned as his father-in-law’s enforcer, and through fishing, a humble occupation that had brought him shame back in Korea.
Jin tried a number of times to escape the island. His first attempt sent him right back to the island, into the hands of a hostile group of other survivors. He and Sun later boarded a freighter, but though Sun escaped, a disaster aboard convinced her he died. Jin returned to the Island, time traveling to 1974, where he joined the DHARMA Initiative as a security officer for three years. He returned to 2007, where he reunited with Sun. They tried to leave the island on a submarine. It sank, and the two drowned together. They stayed a couple in the afterlife and moved on with their friends.
4×01 – The Beginning of the End
Desmond returned and announced Charlie’s death to told those on the beach, who then trekked to Jack and the others in the jungle. Jin happily reunited with Sun at the cockpit, and the two sided with Jack when the survivors divided. (“The Beginning of the End”)
4×04 – Eggtown
Two days later, they sat on the beach and debated where to live after their rescue. Jin said he’d learned English so they could live in America; Sun, however, favored returning to Korea. (“Eggtown”)
4×07 – Ji Yeon
After Desmond and Sayid left on the helicopter, Jin continued practicing English, telling Jack that Sun and Sawyer helped him though he admitted that “Sun is better.” Sun, meanwhile, lost trust in their supposed rescuers and set out for Locke’s camp. Jin declared “Where Sun go, I go.”
In a last-ditch effort to stop them and make Sun leave the Island, Juliet told Jin about Sun’s affair. He refused to confront Sun about it but went fishing with Bernard, who talked about how the island had healed Rose’s cancer. Reminded of his love for his own wife, Jin forgave Sun that night and claimed he was a different man from when she’d cheated on him. (“Ji Yeon”)
4×09 – The Shape of Things to Come
A day later, Jin and Sun responded to Bernard’s calls when a dead body washed ashore. (“The Shape of Things to Come”)
4×10 – Something Nice Back Home
Jin, along with Sun, Charlotte and Daniel, later traveled to the Staff station to collect medical supplies for Jack. Jin and Sun discussed Daniel’s obvious attraction to Charlotte, and Jin noticed Charlotte understood their Korean.
He confronted her about it back at camp and threatened Daniel in Korean till she admitted she understood him. Jin then instructed Charlotte to ensure Sun boarded the helicopter. (“Something Nice Back Home”)
Sayid returned on the raft, and Jin and Sun boarded the first ferry to the Kahana. They met Michael there, and Jin told him his English had improved. (“There’s No Place Like Home, Part 1”)
Desmond then called them to the communications room, which had been loaded with explosives. Jin helped freeze the battery to postpone the detonation and tried to find how to defuse the bomb. (“There’s No Place Like Home, Part 2”)
When an explosion proved imminent, Michael insisted Jin return abovedeck. When he did though, he saw the loaded helicopter taking off without him. He waved frantically for them to return for him, but neither his shouts nor Sun’s were enough. The C4 exploded seconds later, taking half the ship with it. (“There’s No Place Like Home, Part 3”)
After the Oceanic Six rescue
When the Oceanic Six escaped the Island, they believed Jin dead. Sun stated at a press conference that Jin had died on during the plane crash. She returned to Korea, where she confronted Mr. Paik, blaming him for Jin’s death along with one other person. (“There’s No Place Like Home, Part 1”)
4×07 – Ji Yeon
When Sun gave birth, she called out for her husband in delirium. She named her daughter Ji Yeon, as Jin had wished.
Hurley later visited her, and they visited Jin’s grave together. (“Ji Yeon”)