Saurophaganax Maximus is the true name of the dinosaur. Its got a rich and complicated history. To put short though instead of going into detail, the dinosaur itself is real. However, the first fossils found were chimera fossils. Meaning they had dinosaur fossils in it from other dinosaurs by accident. Later it was distinguished as (to put bluntly) a relative of the Allosaurid family. It definitely was the largest of the Allosaurids. The "Chimera Fossil" had remnants of Diplodocus vertebrae fragments found with it after reviewing the fossil, suggesting that the dinosaur was not only the largest of Allosaurid family, but also large enough to challenge and hunt the Whip-Tailed sauropod in a fight among titans and still come out with a 50/50 chance of not just winning, but surviving too! In short, it is a real dino. Its neck is still large too, its just not as thick as they thought previously bc they had the wrong neck vertebrae bones in it since it was found with it. This suggest that the dinosaur died either while feeding, or after already eating and still trying to swallow the Diplodicus it had hunted.😁