Boone (Ian Somerhalder) was fatally wounded after climbing into a plane (under Locke's orders) that ended up falling from a tree. He later died in the caves.
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Ethan (William Mapother) was shot by Charlie.
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Dr. Arzt (Daniel Roebuck) was blown up by the dynamite they found on the ship.
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Shannon (Maggie Grace) was accidentally shot by Ana Lucia.
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Karma stinks! Michael shot Ana Lucia (Michelle Rodriguez).
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Libby (Cynthia Watros) was intentionally shot by Michael, but it wasn't premeditated.
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Mr. Eko (Adewale Akinnuoye-Agbaje) was beaten to death by the Black Smoke monster.
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Nikki (Kiele Sanchez) was buried alive after being bitten by an insect that causes a temporary paralysis that simulates death.
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Paulo (Rodrigo Santoro) was also buried alive after being bitten by an insect that causes a temporary paralysis that simulates death.
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Possibly one of the most tragic-yet-heroic deaths, Charlie (Dominic Monaghan) drowned in the Looking Glass.
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