There exists some kind of semi-official ghack (as it seems to me), which turns Morte into an "Easter Egg". <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />
I don't remember where I found it, but I remember that something similar was available for Annah (I think that was her name), too.
EDIT : I just found a place to download that : It's the official Interplay site :
http://www.interplay.com/interact/downloads.asp?gameid=9