The Transformers Titans Decepticon Necro is one of the largest Transformer figures, standing at 18 inches. This beefy T-Rex transforms not once, not twice, but three separate times. It also encompasses its monstrous T-Rex form, a gigantic space ship, and an entire, enormous city. When Necro Trypticon is in city mode, you can connect it to all of the Titans Return Leader class figures.