Scorpios Rex's History
Scorpios Rex (E750) was a hybrid dinosaur frozen and held captive in InGen’s secret tunnels until it escaped. It is also the central antagonist of Jurassic World: Camp Cretaceous Season 3. There are two known individuals: the first one created by Henry Wu, with the second one being asexually reproduced by the original.
Dr. Henry Wu, under the acknowledgement of Simon Masrani, attempted to create a hybrid dinosaur. The Scorpios Rex was the first successful hybrid dinosaur to be created, under request of Eli Mills. There may have been many attempts to create the Scorpios Rex, as the notes that Brooklynn holds in "The Watering Hole" had incrementing numbers on each page: 1309, 1310, 1311 and, much later in notes, E750. Pages 1309 and 1310 show combinations of the letters used in DNA sequences but are not grouped as DNA sequences. It was the first genetic hybrid dinosaur created by Dr. Wu, preceding the Indominus Rex and Indoraptor. Despite many setbacks and Masrani claiming the dinosaur was too grotesque to be put on display, Wu insisted on keeping the hybrid. However, one day, after barely surviving an attack from the hybrid, Wu eventually came to realize that with the Scorpios' mindless aggressiveness, it was far too dangerous to be set loose, let alone placed as a park attraction for the public. With Masrani and Mills deeming the creature to be too unstable, Wu shut down the project and kept the Scorpios in a cryogenic sleep, intending to never release it. This secret was heavily guarded, so very few people actually knew of the hybrid's existence.
While attempting to get the facilities functional again, Kenji Kon repeatedly clicked a button that short-circuited the creature's containment tube, causing the cryogenic chamber to heat up and crack open. After the deaths of Mitch and Tiff, a Compsognathus ripped through a cable which contributed to keeping it frozen. The Scorpios Rex's screech/roar is later heard as the screen goes black, presumably as it breaks free, roaming through the island.
Having escaped its containment, the Scorpios Rex asexually reproduced, causing 2 Scorpios Rex to roam the island. In its first appearance, the hybrid takes down a Ceratosaurus and then carries it away. In its second appearance, it’s spotted by a drone, which the dinosaur then destroys.
Later on, the Scorpios Rex stalks and hunts down a Gallimimus. A short while afterwards, Darius and several other Gallimimuses find its body caught in a tree, placed there by the hybrid. As a result of the Scorpios' rampage, the group notice that the compies are avoiding their camp and other dinosaurs are acting uncharacteristically, moving to areas they normally would not go.
The Scorpios Rex causes a stampede among the herbivorous dinosaurs of the Isla Nublar, killing a Brachiosaurus during the attack, which unfortunately can't flee fast enough to escape the hybrid. The Scorpios Rex also indirectly takes the life of a Sinoceratops when the panicked ceratopsid fatally crashes its head against a rock that Sammy and Brooklynn were hiding behind on its flight.
When the Scorpios Rex finds the kids in their camp, it tries to attack them; finding that the fence is electrified, it jumps the fence and attacks them from above. It is only stopped from attacking the group when fire from a lightning strike catches its attention and noise from other dinosaurs causes it to investigate.[11]
After the hybrid leaves, Sammy begins to feel dizzy and notices the quills from the Scorpios Rex in her abdomen. Yasmina is chased by the Scorpios rex when she runs to the lab to obtain the antidote for Sammy. During this chase, Yasmina is saved by Ben and Darius when they use gasoline to destroy the gondolas in order to catch its attention.
Later on, the Scorpios Rex attacks a herd of bioluminescent Parasaurolophus Lux. It also tries attacking Bumpy, but the herd of Ankylosaurus defends her and drives it off, as their armor is too thick for the hybrid's quills to pierce.
Darius and Ben later discover that the Scorpios Rex that attacked them is not a solo but one of two, one of them having been reproduced asexually. Rather than team up and attack Darius and Ben, the two Scorpios attack each other. Hiding in the limo taken from Kenji's penthouse, Darius and Ben are tossed about inside the car as the two hybrids violently fight it out.
After the two hybrids flee, Darius and Ben reunite with the rest of the group, planning on figuring out a way to kill the hybrids due to the damage they cause and the danger they present. To that end, Darius finds the tranquilizer gun left behind in an encounter with Blue and plans to use it to sedate the Scorpios Rex. When they locate the gun in the old Jurassic Park Visitor Center, they are attacked by one of the Scorpios Rex. Darius tries to shoot it and misses, with the resulting attack catching Blue's attention and that of the second Scorpios Rex. Darius earns Blue's trust by refusing to use the gun and Blue distracts the two hybrids by fighting them, causing a three-way battle between her and both hybrids. Removing the metal scaffolding that supports the building roof, the campers and Blue escape the Visitor Center together as both Scorpios Rex are crushed and killed when the ceiling collapses on top of them.
When Dr. Wu returns to collect DNA for Eli Mills to create the Indoraptor, Wu realizes the Scorpios Rex escaped after finding the campers of Camp Cretaceous back on Isla Nublar as he searches for his laptop. During an encounter with the campers, Brooklynn tells Wu his creation is a monster and to stop making hybrids, informing him of the creature's ability to self-reproduce; she then tells Dr. Wu how they managed to kill both creatures, both shocking and morally concerning Wu. When the group destroys Dr. Wu's laptop while rescuing Brooklyn, any hope of recreating the Scorpios Rex is lost, rendering it extinct and marking an end to its existence forever.