Whoa! This is a great chart! But there is one problem. I believe that IDW Metroplex is bigger than that. First of all:Metroplex is on his knees in this image, with Prowlestator coming up to just below his chest.Marissa estimates that Prowlestator is about 400 feet tall. This means that from just below Metroplex's chest to his knees is around 400 feet. That means there is more height in his head to base of chest, and his knees to feet.This image features Skywarp near the Necrotitan. If Skywarp is the size of a jet, then that means that he is around 40 feet from jet to nosecone. Now comparing it to the Necrotitan's head, the head is around 6 Skywarp's long. But this means that the head is 240 feet tall. So there really is no way to determine how tall Metroplex is. But if we go by the first measurement, we can possibly infer that Metroplex is about two Prowlestators tall, putting him at around 800 feet tall. But it's just a theory.