The Nazi Devil, the embodiment of the fear of Nazis during the height of WW2. 
It resembles a giant Wermacht soldier the size of a small mountain with huge plane wings and a gas mask crawling on all fours at 120 meters, despite it's massive size it is extremely agile.
It never speaks and is a force of nature. 
It's gasmask emits toxic gas clouds from the filters of it's gasmask. 
It's roars a cacophany of millions of dead mixed in with the blares of Jericho Trumpets that can destroy anything.