Name some of the creepiest transformers that you can think of?

I thought with halloween just around the corner it would be fun to see figure that everyone thinks are creepy. For me a couple of them are g1 ironhide and rachet there is just something creepy about how that smiley face stares out at you from behind there windshields. I'm sure you guys can come up with better example than that but I thought I would start it off.