I'm currently reading the play "The Rise and Fall of Arturo UI" by the German playwright Bertolt Brecht (though it takes place in Chicago). There is a fairly minor character (at least at the point in the play where I'm at) called Young Dogsborough, whose father is a major character in his 80's. Any time the son says anything, it is to unnecessarily agree with the father. For example if the father says, "They've gone", the son will then say "My father says they've gone."
Which book characters have you felt annoyed by?