This page lists the main character roster changes through each season. Occasionally, the actors that play these characters are credited as guest stars after they have left the main cast or before they join the main cast, usually for appearances in flashbacks or brief on-island appearances.
Season 1[]
"Pilot, Part 1" through "White Rabbit" → 14
- Original Cast
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"House of the Rising Sun" through "The Moth" → 13
- Claire does not appear.
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"Confidence Man" → 14
- Original Cast
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"Solitary" → 13
- Claire does not appear.
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"Raised by Another" → 14
- Original Cast
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"All the Best Cowboys Have Daddy Issues" through "Hearts and Minds" → 13
- Claire was kidnapped in "Raised by Another".
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"Special" through "Exodus, Part 3" → 14
- Claire returns in "Special".
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Season 2[]
"Man of Science, Man of Faith" → 14
- - Boone died in Season 1 ("Do No Harm").
- - Ana Lucia is added to the cast.
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"Adrift" through "Orientation" → 13
- Walt was kidnapped in Season 1 ("Exodus, Part 3").
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"Everybody Hates Hugo" through "...And Found" → 15
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"Abandoned" → 16
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"The Other 48 Days" → 15
- Walt does not appear.
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"Three Minutes" through "Live Together, Die Alone, Part 2" → 15
- Walt is reunited with his father.
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Season 3[]
"A Tale of Two Cities" through "I Do" → 16
- - In Season 2, Ana Lucia and Libby were killed ("Two for the Road"), and Michael and Walt left the Island ("Live Together, Die Alone, Part 2").
- - Desmond, Ben, Juliet, Nikki and Paulo are added to the cast.
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"Not in Portland" through "Exposé" → 15
- Eko was killed in "The Cost of Living".
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"Left Behind" through "Through the Looking Glass, Part 2" →13
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Season 4[]
"The Beginning of the End" → 17
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"Confirmed Dead" through "There's No Place Like Home, Part 3" → 16
- Charlie drowned in Season 3 ("Through the Looking Glass, Part 2").
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Season 5[]
"Because You Left" through "This Place Is Death" → 14
- In Season 4, Claire disappeared ("Something Nice Back Home"), and Michael died ("There's No Place Like Home, Part 3").
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"316" through "The Incident, Part 2" → 13
- Charlotte died in "This Place Is Death".
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Season 6[]
"LA X, Part 1" through "What They Died For" → 15
- - Daniel was killed in Season 5 ("The Variable").
- - Richard, Frank and Ilana are added to the cast, and Claire returns as a regular.
- - Juliet dies in "LA X, Part 1".
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The End, Part 1 through The End, Part 2 → 28
- - Bernard, Christian, Eloise, Penny, Pierre and Rose are added to the cast, Boone, Charlie, Charlotte, Daniel, Juliet, Libby and Shannon return as a regulars.
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Table view[]
Legend
Main character
Not a main character
Note 1: Appeared as a guest star prior to becoming main.
Note 2: Boone died in "Do No Harm" but was credited as a main character until "Exodus, Part 3". He has since appeared as a 'special guest star' as well as a 'guest star'. He later returned as a main character in "The End".
Note 3: Walt was taken by the Others in "Exodus, Part 3". In Season 2 he was credited as a Main Character in the episodes he appeared in. He has since appeared as a guest star. He left the Island in "Live Together, Die Alone, Part 1".
Note 4: Shannon died in "Abandoned" but was credited as a main character until "The Other 48 Days". She has since appeared as a 'special guest star' and later returned as a main character in "The End".
Note 5: Ana Lucia died in "Two for the Road" but was credited as a main character until "Live Together, Die Alone, Part 2". She has since appeared as a 'special guest star'.
Note 6: Libby died in "?" but was credited as a main character until "Live Together, Die Alone, Part 2". She has since appeared as a 'guest star' and later returned as a main character in "The End".
Note 7: Michael left the Island in "Live Together, Die Alone, Part 1". He later returned as a main character in "The Beginning of the End" and died in "There's No Place Like Home, Part 2". He has since appeared as a 'guest star'.
Note 8: Eko died in "The Cost of Living" but was credited as a main character until "I Do".
Note 9: Nikki and Paulo died in "Exposé". Nikki has since appeared in an uncredited part.
Note 10: Charlie drowned in "Through the Looking Glass, Part 1" but was credited as a main character until "The Beginning of the End". He has since appeared as a 'guest star' and later returned as a main character in "The End".
Note 11: Claire was not credited as a main character for episodes she did not appear in during season 1 (with the exception of "Deus Ex Machina"). She also disappeared having been last seen alive in Jacob's cabin in "Cabin Fever" but was credited as a main character until "There's No Place Like Home, Part 2". She appeared in an uncredited part in "The Little Prince" using archive footage and returned as a main character in "LA X, Part 1".
Note 12: Charlotte died in "This Place Is Death". She has since appeared as a 'guest star' and later returned as a main character in "The End".
Note 13: Daniel died in "The Variable" but was credited as a main character until "The Incident, Part 2". He has since appeared as a 'guest star' and later returned as a main character in "The End".
Note 14: Juliet suffered a major injury in "The Incident, Part 2" and died in "LA X, Part 1" where she was credited as a 'guest star'. She later returned as a main character in "The End".
Note 15: Ilana died in "Everybody Loves Hugo" but continued to be credited as a main character until "The End".
Note 16: Jin, Sun & Sayid died in "The Candidate" but continued to be credited as main characters until "The End".
See also[]
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