AI villains are, in my opinion, probably the easiest way to have a recurring nemesis. Even if you find the body, there are always the off-site tape backups.
Ebony the Black Dragon
http://ebony14.livejournal.com
"Good night, and may the Good Lord take a Viking to you."
Ebony the Black Dragon
http://ebony14.livejournal.com
"Good night, and may the Good Lord take a Viking to you."