This page is organized by which character had their first centric flashback, and then within each subcategory, arranged by first episode appearance chronology (flashbacks per main character only). For an alphabetical listing, see Flashback Characters Category. For flashforward characters, see Portal:Flashforward Characters.
Ordinary Flashback Character Name
Episodes
Details
Crossover Flashback Character Name
Episodes (for that character's flashbacks only)
Details
* = actual name currently unknown †= known deceased
Both Jack and Claire's father; hired Ana Lucia as bodyguard; met Sawyer once in Australian bar; died of a Myocardial Infarction (aka Heart Attack) according to the Sydney Medical Examiner, presumably alcohol-related
Doctor who falsely told Sun that she is infertile; feared retaliation from Jin and/or Mr. Paik if he were to tell that it is actually Jin who is infertile
An Australian Secret Intelligence Service agent who recruited Sayid to gather information on stolen explosives, in exchange for the knowledge of Nadia's whereabouts
Flight 815middle section survivor who briefly bumped into Christian Shephard's car while Ana Lucia was riding inside; briefly appeared in the background of the Australian police department when Boone was trying to file a missing persons report
Flight 815middle section survivor who briefly bumped into Christian Shephard's car while Ana Lucia was riding inside; briefly appeared in the background of the Australian police department when Boone was trying to file a missing persons report
A drug smuggler who worked with Eko in Nigeria; forced Eko out of a plane, saving his life; died from unknown causes after parachuting out of the Beechcraft on the Island.
Jacob's fraternal twin brother, who wants to leave the island. Visits Jacob on the beach shortly before the arrival of The Black Rock and expresses his desire to find a loophole to kill him.
Richard came to Jacob with intent to kill him instructed by Nemesis, Jacob struck first though, disarmed Richard, then asking Richard if he wanted to be a messenger for him
Jacob's Nemesis found Richard chained up in the Blcack Rock, but just before that, killed off the remaining officars from the Black Rock. Nemesis then helped Richard, telling him he was in Hell, then convincing him to kill Jacob. Saying Jacob was "The Devil"
Isabella was Richard's Alpert's wife. She gave Richard her cross so that he could buy medicine for her. However, while Richard was trying to get the medicine from a doctor, she died.
The Man in Black's fraternal twin brother. Refuses to leave with him among the hunters when the Man in Black leaves Mother. Throws him into The Source, transforming him into the Black Smoke.
Biological mother of Jacob and The Man in Black. Killed by Mother immediately after giving birth, appears to the Man in Black in ghostly form when he is 13, and leads him to the village of her people.