Avery
Avery is an official of the Royal Guard, he has appeared several times in the Warriors of Destiny event cycle.
He was present in Moonglow for the Mad Mage event (also see Blackrock Detector. He was assigned to track down the remaining members of the Followers of Armageddon. Finally, he was fingered as a traitor by Casca, and as of January 2009 was imprisoned with Ricardo.
From what we can tell of his character, he is a competent officer who follows orders well. He seems to have had the unenviable task of denying the involvement of the Shadowlords in the Blackrock Detector matter, despite clear evidence of their involvement. This, combined with the strangely dark-colored armor he wore, made some players' characters suspicious of him.
He is mentioned in the following BNN news articles, as archived here on the UO Guide, and presented here in no particular order: