This fellow was an old TMNT RPG character from back in the day. Niels Martigan, inventor, tinkerer, and techie-thief. If he couldn't build it, he'd swipe it and take it apart, then build it.

Yes, the 80's called and want their hairstyle back. And yes, I'm well aware that his left arm is just all out of whack. Alas, I inked quickly in those days, so the errors were immortalized. So it goes.