I am interested in hearing from others which characters they hated the most, which were most annoying, which ones they liked the most, etc.
For example, I hated Benjamin Linus, the leader of the 'others'. I don't know what kind of mental disorder is required for someone to justify his treatment of those crash survivors, e.g. sending Ethan to kidnap Claire to steal her baby, murder random survivors, etc. What kind of mental damage allows someone like Linus to speak of Ethan as an innocent? How could he view his actions and those of the 'others' as essentially blameless? Who could watch a plane crash, and not be concerned about the welfare of the passengers? Who when learning there were survivors would not offer them all, all the help and aid he could give? Ben Linus, that's who.
I liked Sayid. Despite his background, he was a decent person. He hated what he had done, and he showed compassion, loyalty, and courage. He had a solid sense of fairness.
I loved Kate, in no small part because she is a good looking lady. The same goes for Shannon. I know Shannon was a pampered, conceited, manipulator of men when she landed on the island, and for a short while afterward. But she changed fairly quickly, her better self coming out, especially after she and Sayid fell in love. Maggie Grace is a beautiful lady, with a very attractive body, like Evangeline Lilly. I may have male bias here, but I like them.
Sawyer had major character flaws, and a past nobody could respect. Anyone who preys on and steals the life savings of people, as he did, should be in prison (as he was). On the island he was often times a heartless thug. But this character was also shown to have compassion at times, courage, loyalty, and self sacrifice. I grew to like him for that reason. He could be depended upon when needed, most of the time. He was not meant to be as noble and self sacrificing as some of the others, but he showed he could be a decent stand up guy.
Charlie Pace: I could not stand that guy. His speech was loud, his dialogue was fatuous, vacuous, passive aggressive, and attention seeking. Like many addicts he was a manipulative liar. He became angry when his manipulations failed, or when he was caught in a lie. Locke tried to help Charlie get clean, and gave him advice when he felt Charlie was sincere in wanting it. Charlie resented Locke. He sometimes took pleasure in sarcastically goading Locke. His personality, wow. He was one of those guys who knows others don't respect his life choices, and that he isn't really all that competent at most tasks, and he resents it. He is insecure and fears he won't be accepted if people see him for who he really is, so he intentionally makes himself an irritant in a passive aggressive manner, then acts insulted that others are put off by him. This gives him a fake reason for being rejected, which is easier for him than being rejected for who he is. Charlie was hyper excitable, sometimes almost to the point of being hysterical. I know this character was redeemed at the end, giving up his life to save others. He had his good points. But he was so annoying to me that I found it difficult to like him for his good points.
Also, Michael; I just could not stand him. "WALT!" he shouted ad nauseum. Michael was suspicious, and way too quick to assume the worst about others. He murdered Ana Lucia in cold blood, and murdered the psychologist too. Of course he betrayed his fellow survivors who were trying to help him. He tried to justify all of that saying he had to save his son from the others. He committed premeditated, cold blooded, murder of people who had done nothing to him, and betrayed his friends as they tried to help him. Michael had his good points, and he tried hard to redeem himself, giving up his life while trying to save the friends he had previously betrayed. So he redeemed himself at the end, like Charlie. But as far having an annoying and strident voice, and personality, Michael was right up there with Charlie.
Ben Linus was a pathological liar, a mass murderer, kidnapper, and master manipulator. He always called himself and his people "the good guys". Many times he and his people claimed they didn't kill people, but this was one of his big lies, sold through repetition. On Ben's orders Ethan ordered Charlie to turn Claire over to him, threatening to kill one person for each day they failed to do so. And he followed through on his threat the first night, killing one of the flight 815 passengers. Ben himself participated in a genocidal gas attack which killed off all the original Dharma people; Ben personally murdered his own father with deadly gas. Ben shot John Locke through the stomach because John was able to hear Jacob! Ben Linus was like the devil incarnate.
Hurley aka Hugo was cool, though a bit neurotic sometimes. But he was a likable guy. Like the man said, Everybody likes Hugo.
Claire was alright, except when she was crying. Wow, I just could not listen to her voice when she was crying.
Desmond was a cool guy, another one of my favorites.
Jack was a dependable, solid character, though sometimes too naive.
Locke was a bit weird. I liked him overall, mostly because he was an interesting character. But when I watched him strike Boone in the back of the head, tie him up, and tell him it was for his own good, and that Boone would thank him for it some day, I thought to myself "your time is coming". If I had been Boone, I would have left a lot of knots on that bald head of his for doing that to me. Locke became even more weird as the show continued, and there were times when I would have been tempted to put him down, had I been on that island. He had an irritating habit of believing intently that he knew the right thing to do, even after events proved him wrong many times. The writers had him sometimes displaying wisdom and good sense, and other times acting like a fool. For example, at the communications station where they found that Russian claiming to be the last survivor of the Dharma Initiative, Locke began following the commands and entering numbers on the computer. When the directions said "If there has been an incursion of the station by the hostiles, enter 77", John Locke mindlessly entered 77 which resulted in the time delayed detonation of the C4 in the basement of the station. Locke later complained to Syad that he should have been informed about the C4, saying if he had known about it, he would not have entered 77. But that is stupid. What was the point in entering it in the first place? Locke knew it would alert the "others" of their presence and their location, tipping them off that they were coming.
Sometimes the writers made Locke an absolute idiot, other times they had him displaying good sense. In this scene they showed Locke mindlessly following the directions of the Dharma man on the film.
Locke and Jack both had a tendency to be paternalistic, assuming they had the right to decide things for everyone else. They were outraged when others failed to share everything with them, but assumed the authority to withhold information from others at their discretion. Of the two of them, Locke was worse in this regard.
Locke especially felt the authority and the need to tell others what to do. Remember when Echo was pushing the button and Locke thought it was pointless? Locke couldn't stand it. He told Echo not to push the button. Echo told him not to tell him what he could do. Locke told Echo that he had to stop so he wouldn't be a slave to the computer. Echo told him he wasn't a slave and told John Locke to mind his own business, basically. Locke tried to force Echo to give up pushing the button. Eventually he enlisted Desmond to help him do just that, resulting in the destruction of the Swan station. Locke had a fatal combination of traits that made him dangerous to those around him. He was naive, gullible, easy to manipulate. Once sold on an idea, he believed it completely, fervently, without question. No matter how many times he followed his belief without question and found out too that he had been lied to, Locke was just as gullible the next time around. This fatal flaw was compounded by Locke's tyrannical belief that he somehow had the right to dictate to others, to decide their fates for them. He had a kind of savior complex, minus the love. He was perfectly alright with abusing people "for their own good".
Still, Locke was an immensely interesting character, and the show could not have been the same without him.