Originally Posted by Amirit
The funny thing is, they do not need to rewrite much. One way is to change the names and remove lines about those characters being Viconia and Sarevok. Another - they can be indeed imposters, or, better yet, assume the names in commemoration of the old characters (in a manner of "I take your name and every follower will think that you serve me").
I am sure there are dozens of other ways to do it without spending much money.

Thanks for replying and I agree, I was thinking about those solutions as well.