Recently, we’ve featured quite a few LEGO builds based on the 9V Train Track switch element. Those were some mighty fine builds. Some might even call them transformative. But Librarian-Bot has taken the idea of “Train Switches” in an unforeseen direction with Switchback. This sinister-looking Decepticon is ready to take you for the last ride you’ll ever go on. I particularly like the way the hands are constructed – they add a delicate, almost surgical feel to an otherwise bulky robot.

In train mode Switchback completely hides any robotic nature – and even works on standard LEGO track. It’s a sharp-looking engine build that makes good use of tile and curved slope elements to provide just the right level of real-world detail.

If you’re ready for even more Transformers goodness (and badness) be sure to check our archives!