Ensemble Kate Austen Jack Shephard James "Sawyer" Ford Claire Littleton Juliet Burke Ben Linus Desmond Hume Sayid Jarrah Hugo "Hurley" Reyes Richard Alpert MiB Miles Straume Frank Lapidus Jin Kwon Sun Kwon Charlie Pace John Locke Ana Lucia Cortez Shannon Rutherford Daniel Faraday Boone Carlyle Charlotte Lewis Jacob Michael Dawson
Aaron Littleton Penny Widmore The Monster Oceanic 6 The Others Vincent Rose Nadler Bernard Nadler Charles Widmore Alex Rousseau Ethan Rom Danielle Rousseau Libby Smith Keamy Nikki Fernandez Anthony Cooper Paulo Mikhail Mr. Friendly (Tom) Karl Gault (Freighter Cap Ilana Pickett Mr. Eko Dr. Arzt Naomi
Walt Lloyd Original Character Sarah Liam Pace Kevin Callis Cassidy Annie Richard Malkin Helen Norwood Yemi Christian Shephard Tom Brennan Nadia Dave Isabella