E750 and Offspring (S/F)

E750, age 6 (2016)

E750 (2009 – 2016) was the first specimen of Scorpios rex, and the only one to be bred in captivity. She was created by Dr. Henry Wu through gene splicing techniques and was the first animal to be genetically engineered through the hybridization of multiple genera, preceded only by the hybrid flowering plant Karacosis wutansis in 1997. After being created, she was placed into a state of cryobiosis indefinitely upon being deemed unfit for Jurassic World exhibition; she remained there until her accidental revival in 2016, roughly three months after the park closed. Sometime between then and June 2016, she produced a single unnamed offspring through parthenogenesis; both of them are believed to have died in June 2016. Their lineage is currently thought to be extinct, though they were succeeded by the later Indominus rex and Indoraptor species.


E750’s specimen number comes from the experiment which produced her, Experiment E-750. She was the first success Dr. Wu had, and was preceded by several failures. It is not known exactly what “E750” means due to the secrecy surrounding Dr. Wu’s research into artificial hybridogenesis.


Jurassic World began showing signs of stagnation as early as 2008, only three years after it opened. Simon Masrani, the CEO of Masrani Global Corporation and owner of the park, agreed with the Board of Directors that a new attraction would combat their rising operating costs. He and the park’s Operations Manager, Claire Dearing, authorized lead genetic biologist Dr. Henry Wu to use his cutting-edge gene splicing techniques to create something impressive that would draw crowds to the park, and he began work.

Previously, Dr. Wu had used gene splicing to create Karacosis wutansis, a flowering plant species that could never occur in nature. Now he moved to animal trials. Between 2008 and 2009, he and his scientists applied his techniques to animal genomes, starting with the large theropod Tyrannosaurus rex and incorporating genes from Velociraptor, Carnotaurus, Neobatrachia (tree frog), and Scorpaenidae (scorpionfish), along with other animal species. Experiments W-600, N-601, A-055, and others were failures; finally, with E-750, Wu and his team had success.

Early life

E750 hatched in 2009, possibly on April 9 based on now-redacted information from the Masrani Global website. Little is known about E750’s life in the field genetics laboratory where she first hatched. She was the only one of her kind, and probably did not have any other animals to interact with. The building in which she was kept, in order to preserve secrecy, was labeled as under construction and linked to the field lab by the maintenance tunnel network. Power to her home was routed through a restricted secondary control room not connected to the park’s command center, so even in the event of an outage, she would stay contained.

As she grew, her body developed the features Dr. Wu had engineered into it, but as the first animal specimen produced through artificial hybridogenesis, she was imperfect. Her body was mismatched, making movement awkward and painful, and causing labored breathing. It is possible Dr. Wu fed her live food, through which she would have learned to recognize the heat signatures of prey and to kill using the venomous spines on her tail.

In Log 00239, Dr. Wu described E750 as a success, but acknowledged that its appearance and behavior were “unusual.” In the immediate next log, however, he reported that Simon Masrani had described the animal as “too ugly to put on display.” Much later, in Log 00257, he admitted that E750 was not psychologically stable, and that it could be triggered into a hyperactive state of aggression by unpredictable stimuli even from a total standstill. During the recording of this log, E750 broke free of containment for the first time, attacking Dr. Wu before lab staff could subdue her. She was put back into containment, but not before sticking her creator with a venomous spine. He was only saved by the quick actions of his lab staff, directed by geneticist Eddie; an antivenom had been developed prior to this and was administered in time to save Dr. Wu’s life.

E750 on ice

After the incident, Simon Masrani ordered E750 destroyed. Wu was determined to figure out what had gone wrong, but also understood the importance of keeping the animal away from people it might harm. Without Masrani’s knowledge he placed the specimen into a cryopreservation tank, keeping it alive but unconscious using liquid nitrogen. The dinosaur was capable of cryobiosis like certain frogs, able to survive being frozen. For the first time in E750’s life, she could truly rest, free of the pain and other health issues that had plagued her while conscious.

She stayed there for at least five years. Elsewhere on Isla Nublar, the park grew and changed, with new attractions, different employees, and emerging problems. Wu continued to research, using E750 data to further his work in the hopes of creating a more viable asset. Now, his work was also funded by the Lockwood Foundation, with money funneled to him by the Foundation’s manager Eli Mills. E750’s successor was called Indominus rex, and at the suggestion of InGen Security’s leader Vic Hoskins, it was designed not as an attraction but as a soldier. Mills, Hoskins, and Wu colluded to bioengineer a living assault weapon, hoping to sell to the United States Armed Forces and profit more than they could have with the park alone. This plan, like the Scorpios, would be met with devastating failure. In 2015 it caused an incident so disastrous that Jurassic World closed, never to reopen.

E750 slept through all this, unknowing. The park’s main power was shut off on December 22, 2015 after the Indominus was confirmed dead, since the staff members had already acknowledged an incident of this scope would lead to the park’s indefinite closure. Backup generators kept running, maintaining the frigid cold of E750’s chamber. Simon Masrani and Vic Hoskins died in the struggle, and Dr. Wu was evacuated out by Eli Mills to shelter from the inevitable legal inquiry. Wu intended to continue his work, now planning with Mills to sell on the black market rather than to the American government exclusively. Isla Nublar, meanwhile, was placed under quarantine by the United Nations. No one was to access the island without UN authorization.

This is not to say there was no human presence on Isla Nublar. During the evacuation, six teenagers were mistakenly declared dead when infrared scans failed to detect them, causing the youths to be left behind. In March 2016, they encountered poachers trespassing on the island, and during the ensuing conflict power to the E750 containment unit was shorted out. For the first time in years, she began to thaw.

A second generation
E750 containment failure, Isla Nublar (Mar. 2016)

Consciousness returned to E750, and as the liquid nitrogen evaporated, she came back to life. With consciousness came pain, and hunger. She broke through the glass of her containment unit and found herself in the laboratory, now dark and abandoned. Infrastructural damage had by now caused the door locks to fail, allowing her to break the door down. She entered the maintenance tunnels, which were inhabited only by various animals. Creatures she encountered here were likely her first meals upon achieving freedom. Having never hunted before, she was inexperienced, but small and vulnerable prey such as the scavenger Compsognathus were common enough in the tunnels.

Eventually, she discovered the surface world. It was bigger than anything she had ever seen before, and natural phenomena such as the sun, wind, and rain were wholly new. To a dinosaur accustomed to confinement, cold, darkness, and isolation, the outside world would have been overwhelming. Still, she pushed through in order to survive, learning how to kill other creatures by stalking and envenomating them. She became an unstoppable killer, leaving a trail of carcasses in her wake. It appears she favored the southern island at first, as she did not run into the six castaways for a few months. Here, smaller herbivores were abundant, and she avoided competing with the numerous large predators that hunted in the northern grassland and jungle.

At some point after her escape, she reproduced. It is unknown how she accomplished this; the current hypothesis is that genes coding for parthenogenesis were incorporated into her genome by way of tree frog donors. Parthenogenic frogs reproduce by a process called gynogenesis, so this may be the case in Scorpios rex if the hypothesis is correct. This means that, in order to produce offspring, E750 would have needed to mate with a male of another species, parasitically using his sperm to breed but not incorporating any of his genetic material. Her numerous genetic parent species would have made most of Isla Nublar’s theropods genetically viable mates, but whether any of them would have willingly mated with her is extremely questionable.

Nonetheless, she laid at least one egg, and it soon hatched into a very similar creature to herself. The only difference between E750 and her unnamed offspring was their color: the parent was dark gray, while the offspring was dull brown. Nothing is known about the offspring’s early life, but she grew rapidly like her mother and soon became equally adept at navigating Isla Nublar’s forests and abandoned infrastructure. She also inherited her mother’s physical and psychological health issues, which are probably fundamental to the Scorpios rex species.

Competition for prey and habitat were already an issue among Isla Nublar’s hunters, but E750 and her child developed an enmity that went far deeper than that. They fought viciously every time they met, and actually went out of their way to find and attack each other. Whenever one of them caught wind of the other’s presence, she would stop whatever she was doing to hunt the other down. Despite their savage fights, they never caused permanent damage to each other, and their clashes always ended with one of them fleeing. This seeming inborn hatred of their own kin may have been the reason that only one other Scorpios was ever confirmed in the wild; she may have been simply the only one to survive to adulthood.

Months passed, and the pair of hybrid creatures wreaked havoc on Isla Nublar. Their trail of destruction caused upheavals in the island’s fragile ecosystem, forcing many animals out of their habitats and causing behavioral changes in more than a few species. Some creatures may have been driven extinct on Isla Nublar by these two hybrids. In June, one of them also had an encounter with a Mantah Corp drone, destroying the machine. Their path of destruction inevitably caused them to run into the Camp Cretaceous castaways before much longer, having already caused trouble for the teenagers by altering the island’s normal ecology. E750 was the first to come into conflict with them, discovering the campsite and the electrified fence around it. She jumped the fence, using trees to reach the campsite, and attacked. This took place during a fierce tropical storm, and a lightning strike ignited a nearby palm tree. The fire distracted E750, giving the castaways a chance at survival. Soon, E750 was drawn away by a challenge from her daughter.

E750 nearly claimed her first human victim that night, having stuck Sammy Gutierrez with two spines from her tail. Another of the campers, Yaz Fadoula, made a run for the laboratory while Darius Bowman and Ben Pincus created a massive gasoline explosion at Lookout Point to distract E750. Doing this enabled Yaz to evade both Scorpios, though the campers were not aware of the existence of the second one yet. Sammy was successfully treated and brought back from the brink of death. The campers began their effort to evacuate the island at that point, with both Scorpios threatening them over the course of the next day; all of the campers narrowly escaped being caught up in the hybrids’ attacks on herds of other dinosaurs. Darius and Ben were separated from the others during these events, and they were the ones to discover that there were two Scorpios.


Darius and Ben formulated a plan to subdue the Scorpios, but as they tracked their quarry down, they were being hunted at the same time. This all came to a head at the long-abandoned Jurassic Park Visitors’ Centre, where E750 fought with the campers as well as a lone Velociraptor called Blue. She pursued her quarry through the old building before confronting them in the rotunda. Moments later, her daughter joined the fight, and the two Scorpios became more concerned with attacking one another than fighting their other enemies.

The campers, now all united again, cooperated to destabilize the derelict building while the Scorpios fought inside. Their original plan had been to tranquilize both Scorpios and dispose of them, but this plan failed when Darius missed his shot; Blue also complicated this, as she assumed the gun was meant for her. The appearance of both hybrids meant that Blue had other things to worry about than the campers. Causing the Visitors’ Centre to collapse was a last-second, spur-of-the-moment plan by the campers, and Blue barely escaped along with them. E750 and her daughter, too preoccupied with fighting to notice the building coming down, were crushed to death by debris. Only one corpse could be seen clearly after the collapse, but both are believed to have been killed. Their remains, presumably, stayed buried in the rubble until natural events destroyed them.


Although E750 was considered a failure by Dr. Wu, her legacy lived on throughout his career. This began with the Indominus, which had died two months before E750 thawed out of her chamber in 2016. It continued with what came next: Dr. Wu’s third hybrid theropod specimen, which he called Indoraptor.

Creating the first Indoraptor utilized data from Wu’s earlier experiments to guide him, though he failed to obtain all the information he had originally wanted. Shortly after the death of E750 and her daughter, Wu arrived to Isla Nublar with a mercenary crew hired by Mills to retrieve his data. The Camp Cretaceous survivors opposed him, managing to destroy his research laptop; all he came away from the island with was an Indominus bone sample, though this was enough for his purposes. Sometime after this, Wu succeeded in creating the prototype Indoraptor, the third and final member of the lineage that began with Scorpios rex. Meanwhile, Isla Nublar’s ecosystem slowly recovered from the damage E750 and her daughter had done, but did not have the chance to become fully restored before volcanic activity destroyed it.

Physical ability

Both E750 and her offspring were highly durable and strong, capable of sustaining and surviving fairly substantial amounts of damage without appearing to suffer. This is doubly impressive when one considers their lifelong chronic pain, which caused both of them intense discomfort and agony with every movement, and the fact that they had severe difficulty breathing owing to brachycephaly. When not doing anything, E750 was reported by Dr. Wu to remain still and docile, only acting when triggered by some stimulus. This was likely a way to reduce the pain caused by movement, but also would have helped to conserve energy for those bursts of activity she was prone to. Presumably her daughter behaved the same way.

Both of their descendant species, Indominus rex and Indoraptor, have skin tough enough to withstand bullet fire from most conventional weapons, though it is not known whether this ability was already present in Scorpios. Physiologically, they were also highly resilient, able to survive being frozen solid indefinitely in liquid nitrogen, which exists at a temperature of –320°F (–196°C). When conscious, they had good stamina and were capable of climbing and running at high speeds. So far the only thing to wound either one was the same thing that killed them: massive traumatic injury, which was also what killed their descendants the Indominus (ripped in half) and Indoraptor (double impalement).

The Scorpios appeared to be immune to the venom of their own species, which was useful as they fought often.

Hunting and combat strategy

As carnivorous creatures, E750 and her daughter needed to track down and kill other animals to survive. E750 likely started by hunting in the maintenance tunnels where she woke, but soon moved on to Isla Nublar’s forests and caves. Her offspring probably hatched somewhere in the wild, and likewise began by hunting smaller animals in sheltered areas before graduating up to larger prey. Both of them were able to strategize while combating other creatures, enabling them to take down nearly anything on the island. Ambush was their favored tactic, lurking in undergrowth or up trees and pouncing on prey. By getting close enough before launching into attack, they were able to tackle and kill even speedy prey before it could escape.

Their teeth and claws, as well as natural strength and agility, were sufficient to kill most victims, but their venom gave them another advantage. Some prey were too large or powerful to kill in fair combat, so the venomous spines were brought into play here. They strategically used their tails, which had the largest and most dangerous spines, to stick prey and allow the venom to weaken them. If left untreated, the venom was fatal. In some cases it could lead to death in other ways; for example, a stuck Brachiosaurus had its leg give out due to envenomation, leading to it collapsing. For such a huge animal, falling onto uneven debris-strewn terrain at high speed was a fatal accident.

Both Scorpios also frequently fought with one another, and here their venom was useless as they were both immune. Instead, their raw strength and flexibility were the main weapons they had against one another. They could also tangle with other theropods, but attacked each other more often, remaining hidden away when not hunting or fighting. Neither ever succeeded in killing the other; one would always back down after a while. Both were killed by a collapsing building while fighting with one another, having more or less ignored other threats around them due to their single-minded focus. Though skilled in combat, their aggression ended up being their downfall.


Although they were intelligent and strategic animals, their reasoning abilities were reduced compared to other famously smart theropods. Utilizing a door handle to open a door is a famous demonstration of Velociraptor intelligence, which more than one raptor has figured out throughout history; it was also puzzled successfully by an Indoraptor. Scorpios, on the other hand, failed this test. When presented with a closed door, E750 struggled with the handle and then gave up, pounding the door down instead.

Part of their struggles with problem-solving may have been due to overstimulation. Their senses were incredibly acute, and sometimes the sensory input of their surroundings was simply too much for them to handle; this is part of what seems to have caused their aggressive lashing out. Being overwhelmed by their senses may have harmed their cognitive abilities and mental clarity, making them less capable of reasoning through puzzles. E750’s daughter grew up in the wild, and so may have had a slightly better handle on dealing with overstimulation than her captive-bred mother.


The sensory systems of Scorpios rex are highly advanced, but this is both a blessing and a curse. For E750, the best example of this was her infrared sensing. Able to see the heat signatures of prey, she could track them over the island and hunt them down without being detected until the last minute. But her infrared vision was so sensitive that she could become overwhelmed by inorganic heat signatures, such as those put off by fire. When a greater source of heat was around, she could become entranced, losing track of her prey.

Her other senses (particularly eyesight, hearing, and smell) were also heightened, and probably about as sensitive as her infrared sensing. These helped her detect other animals, but likely contributed to her constant overstimulation in the wilds of Isla Nublar. Her offspring, having grown up in the wild rather than in a laboratory, may have been more accustomed to natural levels of stimulation; however, as the first species in their lineage, both of them were not as refined as Dr. Wu’s later accomplishments and had many inherent flaws.

Perception of each other and self

E750 appears to have been a tortured creature, wracked by constant pain, breathing problems, and other health issues from the day she hatched. She understood that she was a predator, designed to kill, but had no true sense of ecological belonging; once released into the wild, she roamed about Isla Nublar without settling into a territory. She had a drive to reproduce, but no desire to be a parent. Her internal conflict seems to have run deep, and compounded with the torment of day-to-day existence, this turned her into a savage animal.

Her offspring was probably somewhat similar, having the same biology and health issues as E750. Their suffering seems to have translated into hatred of one another. Their fights were not born of competition, as they frequently lived on differing parts of Isla Nublar; instead, they displayed a genuine sense of enmity. One can interpret their clashes as being an outward manifestation of their self-perception. Their descendants, Indominus and Indoraptor, have metacognitive abilities nearing those of a human, meaning they are cognizant of their own identity and can have feelings about themselves. Assuming this mental capacity was already present in Scorpios, E750 and possibly her offspring appear to have had a strong sense of self-loathing.

Perception of other living things

Although intelligent, neither E750 nor her daughter had much time for analyzing and understanding other creatures in their world: everything was either food, or a threat. For the most part, they understood themselves to be superior predators in their environment, able to kill or drive off nearly everything around them. By remembering their prey’s strengths, they could strategize and determine the best way to take down other species; if unable to make a kill, they showed signs of frustration. For example, the thick hides of Ankylosaurus were too thick to puncture with their spines, making these herbivores invulnerable to a Scorpios attack.

Unlike their relatives, E750 and her daughter did not give humans any special consideration. They did not deliberately hunt down humans in their environment, nor did they view them as particularly more threatening than any other animal. After escaping into the wild, E750 did not even encounter the humans on her island until about three months later, encountering them by coincidence.

Dr. Henry Wu

E750’s creator was the InGen geneticist Dr. Henry Wu, who was also behind nearly every de-extinct species the company had engineered. Initially he considered E750 to be a success, his first genetically engineered hybrid animal; it soon became clear that she was unstable. Her unsightly appearance made her unfit for Jurassic World, so she was slated to be terminated, but Dr. Wu kept her alive in secret to study. After an incident in which she attacked and envenomated him, Wu had E750 submerged in liquid nitrogen and maintained in a state of cryobiotic stasis. He used her as a research subject for his hybridization work, using her as a reference to craft the Indominus rex.

After Isla Nublar was abandoned by InGen in December 2015, E750’s chamber remained powered on. Wu had feared what might happen if she ever escaped, so he had backup generators designed to keep her contained even if the main power failed or was shut down. Unfortunately, three months later, infrastructural damage to the island’s power grid caused even this safety measure to fail. E750 escaped and reproduced, but both died before Dr. Wu’s final visit to the island in June 2016; he only learned about them after the fact. Though his first hybrid animal was now dead and gone, he still used it as a reference for his later work.

Other Masrani Global employees

E750’s creation was suggested by the Masrani Global Corporation Board of Directors, and with authorization from CEO Simon Masrani and Operations Manager Claire Dearing, she was genetically engineered by Dr. Wu and his team of genetic biologists. Among them was a scientist named Eddie, who became a corporate spy. E750 was created in secret, the facility where she lived being marked on maps as “under construction.” Presumably, to maintain this secrecy, Timack Construction directors such as Anthony Leigh would have known to some degree that this was not actually under construction at the time. Few people at InGen knew about E750 other than Dr. Wu’s most trusted field lab staff; Masrani was aware of her, but Dearing has never given any indication that she knew about this particular hybrid.

It was Simon Masrani himself who declared E750 unfit for park use, owing to her ghastly appearance. She was also highly dangerous and unpredictable; because of these traits, Masrani slated her for termination. Although he was led to believe his orders had been carried out, Dr. Wu and his staff kept E750 alive in secret. She remained in cryobiosis until the time the park closed, no one else from InGen ever having learned that she was still alive.

Nublar Six

When E750 thawed out of her cryonic stasis tank, Isla Nublar had been abandoned for over a month. The only humans left were a group of six teenagers who had been involved in the trial run of a vacation camp on Isla Nublar; like Wu’s hybrid animals, this was meant to increase park revenue and offset production costs. Together, the campers and E750 were left behind on the island. They did not encounter one another until June, suggesting that E750 (and her daughter, after she hatched) were not actively looking out for humans.

The first encounter between them was with two of the campers near the lab where E750 had been held. Brooklynn and Sammy Gutierrez had recently discovered E750’s existence and escape before narrowly missing one of the Scorpios outside the lab. They joined up again with the remaining campers to fortify their home against a possible attack. The other campers included Kenji Kon, Ben Pincus, Yasmina Fadoula, and Darius Bowman. That night, E750 invaded the campsite and stuck Sammy with a venomous spine. To save her, Yaz crossed the island to retrieve the antivenom while Ben and Darius set off a massive explosion as a diversion. Sammy was saved, though she took some time to recover.

Due to the danger the Scorpios posed, not just to the campers but to the dinosaurs, Darius planned to kill the creatures before the campers made their escape from Isla Nublar. He and Ben intended to tranquilize both Scorpios to make them easier to kill; they were soon joined by the other campers. This plan failed, but nonetheless they were able to kill the predators by causing a derelict building to collapse with the Scorpios inside. Though the threat was over, the psychological scars left on the campers would last a long time; all of them showed a heightened disgust for Henry Wu’s work, and Yasmina in particular has demonstrated signs of post-traumatic stress disorder.

Isla Nublar animals

The effect E750 and her daughter had on Isla Nublar’s animal inhabitants was rapid and extreme. They not only hunted for food, but out of aggression; their heightened senses and chronic pain caused them to make frequent unprovoked attacks on other creatures. One of the first large dinosaurs to fall to them was one of only two male Ceratosaurus on the island, placing their population in peril of extinction. Heavy damage was also done to the Parasaurolophus populations, with the bioluminescent strain being driven out of its habitat in the lava tubes. Out in the open, this glowing herbivore would have quickly fallen prey not just to the Scorpios but to other carnivores as well; it is now thought to be extinct. Even the speedy omnivore Gallimimus could be attacked by the Scorpios since they excelled at ambush hunting. The well-defended Stegosaurus and Sinoceratops were not safe either; the gigantic Brachiosaurus, too, was surprisingly vulnerable. A brachiosaur could be stuck in its leg by a venomous spine, causing the leg to give out and the giant to topple. Falling from such a height could be fatal to a brachiosaur. During June, herds of Brachiosaurus abandoned their feeding grounds and acted uneasy; these normally unflappable dinosaurs were made skittish by the Scorpios threat. Only Ankylosaurus could withstand the attacks, their armored skin being thick enough to repel its claws and spines. Young ankylosaurs might still have been vulnerable: the sub-adult Bumpy was saved by adults in her herd from E750’s attack.

Animals that survived their encounters had to change their behavior in order to survive. Some dinosaurs attempted to move into new territory in order to avoid attacks. A pair of Ouranosaurus, for example, took up residence in the Northwest Dock area, despite the infrastructure not being suited to their needs. They aggressively drove off any perceived rivals, having been set on edge by the attacks. Meanwhile, the small scavenger Compsognathus began to take shelter in buildings across the island, avoiding open spaces; the larger Monolophosaurus did likewise. This latter theropod began to congregate in bigger groups for safety, despite not being especially social normally. Pteranodons, too, tried to avoid attack by changing their behavior; they could be seen flying around at night, whereas they were typically diurnal. Scorpios was an adept night hunter, and could likely snatch a sleeping Pteranodon easily.

During the chaotic events leading to their deaths, E750 and her daughter fought with one of the island’s last Velociraptors, a female called Blue. The fight went three ways, with both Scorpios tangling with one another and only tangentially fighting Blue; this meant their venom was not utilized. Because of this, Blue avoided being their last victim. Distracted by fighting with each other, they were crushed to death in a building collapse while Blue and a few of the local Compsognathus escaped with their lives. The sheltered area where these theropods had been nesting was destroyed, but the looming threat of death by Scorpios was now alleviated too. With the danger gone, animals on Isla Nublar could slowly go back to their normal behaviors.

Each other

Sometime after she revived from cryobiosis in February 2016, E750 laid at least one egg and produced a daughter; it is not known at this time whether she had other offspring that did not survive. Her daughter was never named, and their relationship was nothing short of hateful. At every opportunity, they fiercely fought with one another, tracking each other down across Isla Nublar to do so. There was ample food and territory for them on the island, so their fights were not out of competition. In fact, upon hearing a challenge cry from the other, either one would abandon whatever she was doing and rush off to accept the challenge and fight.

Nothing is known about the daughter’s early life, since she was first seen as an adult in June 2016. Considering their relationship, it is unlikely that her mother provided any form of parental care. During one of their fights, they were both crushed beneath debris when a building collapsed on top of them; it is believed that both of them died, perishing side by side in combat with each other.

Descendant species

E750 was deemed a failure by her creators, but provided useful reference for Dr. Wu to continue his research. Her successor, named Indominus rex, was first bred in 2012; two of them hatched while E750 slept in her tank of liquid nitrogen. She outlived her “daughters,” with one of the Indominus eating the other sometime before late 2014 and the survivor dying after making a bid for freedom at the end of 2015. Because of this, E750 never met her relatives, nor did the unnamed second Scorpios. Both of the Scorpios are believed to have died in June 2016, six months after the park was shut down due to the Indominus incident.

Not long after their deaths, Dr. Wu retrieved a specimen from the island to further his research. He attempted to recover data on Experiment E750, but was thwarted; nonetheless, he was able to breed a third theropod hybrid. This one he called Indoraptor. It was smaller, built more like the Scorpios than the Indominus. A prototype was hatched, with plans to breed more. However, Wu’s research was stopped by animal rights activists in June 2018 and the prototype was killed almost exactly two years after its original hybrid ancestor.

At this time, no members of this lineage are believed to be alive. Indominus DNA samples are currently in possession of the U.S. federal government, but their status is not known. It is also unknown what party discovered the Indoraptor prototype’s carcass, or what was done with it. The remains of the Scorpios are presumed destroyed in the 2018 eruption of Mount Sibo.


The first hint that the Indominus rex was not Dr. Wu’s first animal hybrid came from the Masrani Global website backdoor’s timeline, which described an unnamed “hybrid animal” hatching on April 9, 2009. The Indominus was later said to have hatched in 2012, and subsequently, the 2009 reference was removed from the website database. For several years the unknown 2009 hybrid was considered non-canon before being restored to existence with E750. The date of 2009 is not explicitly given, but the laboratory wing where E750 was housed appeared on maps of the park that were said to be six years out of date at the time the park closed, and Dr. Wu canonically began his work on animal hybrids in 2008. However, the 2009 hybrid creation date was never restored to the Masrani Global website, which has not been updated since Jurassic World was released in theaters in 2015.

E750 and her offspring have thus far only been portrayed in the 3D animated series Jurassic World: Camp Cretaceous, appearing prominently in Season 3. While the identity of this animal as a hybrid creature and predecessor to the Indominus was not confirmed until Season 3, it had been foreshadowed as early as Season 1 with documents connected to Experiment E-750 appearing. The emergence of E750 herself was the cliffhanger ending of Season 2. Many fans assumed that a third member of E750’s lineage was planned to appear in Season 4, especially with a leaked image of a Scorpios emerging on the internet, but this fan theory was proven wrong. While E750 did make a brief cameo, it was only as part of a PTSD nightmare experienced by Yaz Fadoula.

Like most aspects of Camp Cretaceous, E750 is not taken directly from either of Michael Crichton‘s novels but is instead a spiritual successor to the themes of his writing. Some fans have drawn connections between E750 and Crichton’s ill-adapted Velociraptors, which lack parental instincts and fight or kill their own family members. The show’s writers have also cited Mary Shelley’s Frankenstein; or, The Modern Prometheus as inspiration for E750. There had been ideas with the two preceding live-action films to demonstrate the hybrid theropods as suffering creatures, which were cut from the scripts for both the Indominus and Indoraptor before the concept made it to screen with the Scorpios. Their enmity for each other also seems to be based on the Indominus eating her sibling, and deleted concepts of there being a second Indoraptor which would be fought and killed by the one in the film. Concept art of malformed Indoraptors may also have inspired E750.