I've had a lot of thoughts about this, myself, but I discussed this with a couple of friends of mine recently, and I thought I might post this here to get other's thoughts of it. The question that I was asked is 'How important is it to keep characters consistently in character throughout every scene they are in?' The topic also related to how to portray a character as acting rather... out-of-character, and how to present a character as if they are acting unlike themselves without being overt about it. My thoughts on the matter is that keeping a character consistently in-character is important for several reasons- chiefly among them is that it helps to establish the character in the audience's mind, but also because having a character act out-of-character makes the character very unpredictable to the reader, which can lead to the reader being annoyed because the outcome seems as if it came out of left field. So, what are your thoughts on the importance of keeping a character consistently in-character, and how would you portray a character as acting if the story called for them to act out-of-character?