Dragon Knight, Dark Green, Pearl Titanium Helmet, Angry (fig-010084) is a minifigure from the Kingdoms theme. It has 4 parts. It appears in 2 sets, the first of them from 2010.
BrickLink market data
This minifigure is not priced yet. Your visit asks for it: a later price sweep looks the figure up on BrickLink, where BrickLink's catalogue lets us tell it apart from other figures, and records its prices. Check back later.