In one of story I'm writing, I had the main character starts off as a fairly average, I try to make him a lot like you... He sprinkles his charm on all of the characters he meets and they all learn to love him... By the middle of the story, my main character is 'the man' everyone likes him and some even look up to him... However, by the end of the story, he becomes cold and murderous and even disappears in the final chapter... Is it ok to take a character that reader's once loved and turn that character against them? How do I keep the reader into a story if their favorite character made such a change? There are many stories where characters make drastic changes, but is there a way to change a character effectively? Without hurting readers?