This is the Lego MOC called “The Fearsome Dragon Knight” which is created by Thomas Jenkins. It is another entry into the latest Iron Builders challenge (there sure are a lot of these!) which is where you try to implement Minifigure legs in unique ways. Here you can see a whole bunch of them if you look carefully. The shield is ringed in legs, the chest armor is made up of legs, the tan underside of the Knight is made of legs as are its nose, ears, and toes! There are probably a lot more hidden too. Some other fun stuff included the giant sword topped off with one of the new Nexo knights shields, and the yellow lever base pieces being used for reptile eyes. This Dragon Knight looks deadly, and would make a formable boss for a group of adventurers.
You can find out more about this “The Fearsome Dragon Knight” Lego MOC over here: https://www.flickr.com/photos/thomas_jenkins_bricks/49839965492/
on pretty much every platform available (Xbox, PS3, WiiU, PC, Nintendo 3DS, Nintendo DS, Vita, etc.): 
video game. Titled the “Big Figure Trailer” it certainly lives up to its name. Featuring all of the oversized Lego Marvel characters, such as: The Hulk, Kingpin, Juggernaut, the Blob, Colossus, Lizard, Rhino and the Thing. Not only that but some of the noraml Lego minifigures are also shown, such as: Jean Gray, Cyclops, Storm, Wolverine, Captain America, Invisible Woman, Magneto, Dr. Doom, Tony Stark, and Iron Man in his Hulkbuster Armor. Thats right. Hulkbuster Armor.