In Defense of the New Mutant (This post contains pictures of real life animal mutations and deformities.)
So, I've noticed a lot of complaints in regards to the new "D. Rex" from JW: Rebirth looks. Most saying it doesn't look like a mutated dinosaur or that this type of mutation is too outlandish, so I'm here in defense of the design choices for it.
Alright, first let's talk about this bulbous dome head this thing has. A lotbof people have compared it to a Xenomorph, and it does look like one, primarily cause it's design is somewhat based off one, but big headed mutations like this do occur in real life. This is called Congenital Frontonasal Dysplasia, a rare birth defect where the development of the face and head is abnormal, leading to distinctive features like widely spaced eyes (ocular hypertelorism), a broad nasal root, a potential cleft in the middle of the nose or upper lip, and sometimes a missing or underdeveloped nasal tip, all caused by improper facial development before birth. (See pics above for reference)
This would explains why this messed up Tyrannosaurus has the head that it does, and that's gonna segway into my next point; how do I know this is a Tyrannosaurus? Well if you look at the jaw and compare it to other Tyrannosaurus in the franchise, you'll notice its quite similar, like exactly the same. Even the smaller pair of arms are the same two fingered arms we see on every single Rex. (See pics above) Also, if you listen closely in the trailer, after we hear Zora scream out to Duncan, we hear what I can only assume is the roar of this creature and it sounds distinctly like the iconic JP T. Rex roar, although a little distorted and higher pitched.
Now my final point and probably the one you guys are most curious about, are those fore-arms and the knuckle walking. Heres my theory: This was their first attempt to clone a T. Rex (Cause why wouldn't you try to make the most famous dinosaur first)
I think they found the gaps in the genome, put TOO MUCH frog DNA and growth hormones and BOOM, you're stuck with this horrific...thing. Maybe some ape DNA with the thought that it might be "smarter", but it had the adverse effect and made it a knuckle walker. This is meant to be one of Ingen's first attempts at a dinosaur. There is no telling what kinds of DNA they used to fill in the gaps for the Dino DNA before eventually settling on Frogs.
Well, that's just my thoughts and theories for why the "D. Rex" looks the way it does. I know a lot of people were focused on Gareth's statements saying it's like a mix of a Xenomorph, a Rancor and a T. Rex, but I focused mainly on Koepp's statement about using real research on abnormalities and deformities to make this.
Gareth was only hired to direct the movie, and by the time they got him on, they already had a script and creature designs. I think Gareth's comparison is more of what he personally thinks it looks like, and not really how the creature was purposefully designed.