Sometimes a particular LEGO part can define a model in a way that no other part can. This pair of Maschinen Krieger or Ma.K hardsuits by Marco Marozzi uses a very obscure, and very interesting part from the Scala theme, a saddle to form the torso and primary focal point. But that is not the only fun part use. The sniper uses the head of a LEGO Porg on its chest plate.
While the heavy Gatlin gunner is sporting what looks like an Endor rebel helmet.
One fun detail about these squat and sturdy hardsuits is that they were built to fit an equally squat Duplo pilot