The earliest archive of Rathe Mountains bestiary is November 17th, 2000. Oculys Ogrefiend is listed:
http://web.archive.org/web/200011171....shtml?zone=26
Note his actual page:
http://web.archive.org/web/200104240....shtml?id=3607
First post was on March 31st, 2000.
Kunark was released April 24, 2000.