This Metalsilver Armor Custom Minifigure is an excellently painted version of the BrickWarriors Knight set.  The set includes the jousting helmet, along with body armor, vambraces, knee pads, a shield and sword.

The stand-out feature is the mouth on the faceplate which was inspired the world war two planes. While the white lines along the edges of the armor really make all the painted details pop out.

Very nice custom minifig!