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