Nemesis Prime

Not being a huge Transformers fan I needed to do a quick Google search before I posted this and learned that Nemesis Prime, here depicted with supreme skill by builder MortalSwordsman, is an evil clone of Optimus Prime, having most of his abilities but lacking his moral compass. I also learned that he hates Christmas. So not only can he disguise himself as a truck, transform and wreak havoc, but he's also got something against Santa, what a jerk.