My two cents: don't use "fake talk" - don't even ask to find out what it is, or you'll be tempted to use it. If you really can't progress past an enemy to the point that you'd be tempted to fake-talk him/her/it, lower the difficulty level or just take some time out and think about why you're not getting past the enemy. Ask the people here for tips. Fake-talking enemies is kinda like reading a summary of the game without ever playing it.
IF you
MUST know about fake-talking, a search of old posts will yield lots of info.
As for your second question: if it's going to become evil at the end, are you going to do the quest anyway?
