Hi!
I've been giving some attention to the Undead, Orc, and Grendel pages. I'll try to improve my reference citations as I get more comfortable working here. I am mostly working on talk pages at the moment.
You may object to my tone on some of the talk pages; I realize I may come across as disdainful of some aspects of popular culture, such as, oh, role-playing games and fiction derivative of them. Familiarity, as the saying goes, breeds contempt. I don't hate RPGs. Believe me. Regardless of my tone, I am trying to relate facts about these subjects, and when I am relating theories or conjecture, I try to make that clear as well.
So, in summary, orcs are not undead, and Grendel is not an orc; Grendel may be undead, but not necessarily; I have no opinion regarding what hit dice or class levels Grendel may have; but obviously his CR is epic :)