6. Don Harris (28 Weeks Later)
Donald "Don" Harris - played by Robert Carlyle - was one of the survivors of the Rage Virus outbreak when it originally decimated Great Britain, but he was the main cause of a second outbreak after his wife unknowingly infected him. As a zombie (or an "Infected" as they were known), Don was vicious and cruel. He was, like other Infected people, filled with immense anger and hatred (although he seemed to have a little bit more control over his actions than most Infected) and appeared to take great pleasure in the suffering of others. He also appeared to retain fragment memories of his life before he was infected, since he apparently recognised his family, but not enough to stop him from attacking and trying to infect or kill them - indeed, he brutally beat his wife to death and finished her off by ramming his thumbs in to her eyeballs before going on a rampage and attacking several others.