User blog comment:Gen. Grievous1138/MORDOR ~ BETA 2 ~ MINAS MORGUL/@comment-71.69.176.218-20170601164114/@comment-25012056-20170618145501

Many survived in Umbar and other flourishing colonies that remained loyal to Ar-Pharazôn. At any rate, it is certain that there were BNs in Mordor - the Mouth of Sauron being one - and it is also heavily implied that the Morgul Knights that were mentioned in TTT were of that number.

Gen. Grievous1138 (LOTR Mod Wiki Admin) comlink 14:55, June 18, 2017 (UTC)