We can make anything as our mascot, and I decided to build a post-apocalyptic Mecha who fought in the last great war and got shot in the head. Now it's rusted and unfunctional in a war museum. (Well, if you look at the last picture...)
Piece Out's photo folder looks like a MOC museum to me so I think this guy fits the theme. It's headless because I couldn't find a good head for it so I created the backstory.
It uses six PO Techniques, as I was trying to use many of them in one MOC: 3 from me (Rahkshi/Hero foot combo again, Rahkshi back/Quaza spike combo, Furno wing/old hand combo), 1 from FeeFee (Rhotuka/soft pin connection), 1 from Lord Oblivion (Roborider liftarm/axle connection in the chest) and 1 from Marko (Metru upper leg armor/system spine combo). Enjoy!