I'm making a list of the characters. Here goes.
Jack: A doctor and designated good guy. Saves lives, breaks up fights, performs the occasional mercy killing.
Kate: A fugitive on the run.
Hurley: Resident Everyman.
Charlie: Heroin addicted musician. Has an accent.
Sayid: Former Iraqi soldier. Good with electronics, maps, and soldiery stuff. Also has an accent.
Sawyer: Scoundrel and tough guy. Maybe. Seems only intersted in self-preservation. Also has an accent.
Locke: Was a parapelegic prior to the crash. Taking advantage of newfound mobility.
Walt: Boy who recently lost his mother and has been reunited with his estranged father.
Mike: Walt's estranged father.
Shannon: Poor little rich girl.
Boone: Her lifeguard brother. The two constantly bicker.
Claire: Very pregnant woman. Also has an accent.
Rose: Saved by Jack. Was travelling with husband who was presumed killed in crash. Is aloof.
Jin-Soo: Domineering and abusive husband. Speaks no English.
Sun-Hwa: His timid wife. She does not love her huband.