Just an evil doctor really. I gave him a single eye and a laser to make him look a bit more 'scrap' and unfinished. He carries an integrated tool that has a number of functions, mostly around the area of dismemberment. For example, the spike coming out of the end can be used to inject chemicals or lacerate body parts.
He even has a chemical tank that his weapon/tool is connected to via a hose and he also has a spotlight that is fused into his back and connected to a battery pack located in his torso.
Less of a living creature and more of an intelligent undead. A necro-type being.