User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-5231764-20140702131042/@comment-24296662-20140702131322

At first I thought that was Tetsu's armor but I believe it's more bulky, unless it's his sub's armor.

If it's a new thing, then it may be Steve's armor since the armor has the same horn that Steve has on his head.