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 Shannon Rutherford Ana Lucia Cortez Boone Carlyle Daniel Faraday Charlotte Lewis Michael Dawson Jacob
Aaron Littleton The Monster Oceanic 6 The Others Vincent Rose Nadler Bernard Nadler Charles Widmore Penny Widmore Mr. Eko Alex Rousseau Ethan Rom Keamy Nikki Fernandez Anthony Cooper Libby Smith Danielle Rousseau Mr. Friendly (Tom) Karl Gault (Freighter Cap Ilana Pickett Mikhail Paulo Dr. Arzt Naomi
Walt Lloyd Original Character Sarah Kevin Callis Richard Malkin Helen Norwood Liam Pace Cassidy Annie Yemi Christian Shephard Tom Brennan Nadia Dave Isabella