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