Cthratos, the sleek draconic unicorn of my post-Pangaea story Tanin, in his true as well as humanoid shape.
This character is a goodguy, despire his fearsome looks. ... Well, he opposes the badguys, anyway. That pretty much makes him the protagonist.
Though I suppose it's a matter of fighting on the right side rather than doing the right things - this ancient, ruthless creature will shy away from no means to reach his goal; the obliteration of the enemies who oppose him.
Media used: Corel Photopaint 9, Wacom Graphire3 tablet.
Character and image are © silvestris (me) and my NOT be used in any way without my permission.