Below is Part I of a list of my favorite episodes featuring "LOST" characters:
"LOST" (2004-2010): FAVORITE CHARACTER CENTRIC EPISODES - Part I
1. (2.09) "What Kate Did" - While Kate tends to a wounded Sawyer, flashbacks reveal her original crime, the murder of her father.
2. (1.22) "Born to Run" - Kate seeks a spot on Michael's raft, threatening to take Sawyer's place. Meanwhile, flashbacks reveal the circumstances behind the death of her childhood love, Tom.
3. "(5.04) "The Little Prince" - Kate and Jack discovers that Aaron's grandmother, Carole Littleton is in Los Angeles. A flashback reveals the truth behind Kate's decision to claim him as her son; while the remaining island survivors jump to the day when Aaron was born.
1. (3.16) "One of Us" - Juliet arrives at the castaways' camp, accompanied by Jack, Kate and Sayid. While the survivors question Jack's motives, a strange illness strikes down Claire. Flashbacks reveal Juliet's first three years on the island.
2. (3.07) "Not in Portland" - Flashbacks reveal the events behind the Others' recruitment of Juliet. Meanwhile, she assists Kate and Sawyer in their escape from one of the Others' camps.
1. (2.07) "The Other 48 Days" - The first 48 days following the crash of Oceanic Flight 815 are shown from the Tail Section survivors' point of view, along with Ana-Lucia's leadership.
2. (2.08) "Collision" - Shannon's death causes a clash between Ana-Lucia and Sayid, near the Fuselage survivors' camp. Flashbacks reveal a tragic shooting in Ana-Lucia's past and her subsequent desire for revenge.
1. (4.08) "Meet Kevin Johnson" - Flashbacks reveal Michael's experiences in New York and the deal he made with the Others to spy upon the crew and passengers of Widmore's freighter.
2. (2.22) "Three Minutes" - Michael convinces Jack, Kate, Hurley and Sawyer to help him lead an attempt to rescue Walt, following Ana-Lucia and Libby's deaths. Flashbacks reveal the time he spent as a captive of the Others.
3. (1.14) "Special" - Michael clashes with Locke over his parenting of Walt. Meanwhile, flashbacks reveal the breakup between Michael and Walt's mother, Susan.
1. (2.10) "The 23rd Psalms" - While Charlie leads Mr. Eko to a drug smuggler's plane that contains the latter's brother, flashbacks reveal the path that led to his life as a warlord in Nigeria.
2. (2.21) "?" - While dealing with the deaths of Ana-Lucia and Libby, Mr. Eko accompanies Locke when they find another Dharma station. Flashbacks reveal his experiences in Australia before boarding Oceanic Flight 815.