Gothmog

Found in the Main Hall at Traders.
Trades:
Linked Mithril Helm - for 1 Black Gem, 1 Zircon
Linked Mithril Chest - for 1 Black Gem, 1 Zircon
Linked Mithril Legs - for 1 Black Gem, 1 Zircon
Linked Mithril Boots - for 1 Black Gem, 1 Zircon
Sting - for 3 Black Gem, 2 Zircon
Short Bow - for 3 Black Gem, 2 Zircon