The Engineered are biologically enhanced humans created by Prince Varethis'Daer Venar during the Era of Late Conquest using Frost Sentinel DNA as the genetic foundation. They were conceived not as soldiers but as the sovereign continuation of humanity into places natural biology had failed to reach after three thousand years of imperial expansion: stratospheric peaks where pressure distorted perception, subsurface corridors where undocumented organisms erased exploratory trails within hours, equatorial jungles where mimicry overwhelmed both visual and thermal trace, and glacial valleys where ice bears claimed territories larger than provinces. Daer brought viable subjects to term through sealed stasis matrices beneath the secondary vault and wrote in his private journals that they were the intended form of the species, directed continuity made scalable beyond terrain constraint.
Origin and Production
Hundreds of Engineered were produced through the laboratories that would later become Imperia Research. From those hundreds, thousands were born naturally, and from those thousands even more hybrids followed as unions between Engineered individuals and natural-born humans became common. The Empire absorbed them faster than Daer could document, distributing entire cohorts across military and industrial infrastructure before individuation assessment could be completed. Artificial reproduction is no longer used for the creation of Engineered individuals in the modern era. Every new Engineered person born today is either a natural-born Engineered from two Engineered parents or a hybrid from a mixed union. The planetary gender ratio that shapes demographics everywhere else on Geba has never affected their reproduction.
Assault-Class
The Assault-Class are the most common Engineered and the most socially integrated. Their females average around 7'6" and their males sometimes grow as large as 8'0" to 8'4", their frames built from Frost Sentinel genetic material optimized for breaching fortifications, engaging apex threats, and holding ground in extreme conditions. They are fully cognizant with sharp strategic thinking, and their defining limitation is intense impulsivity, a trait that drives many to seek ever-greater risks in civilian life and shortens their potential lifespan of 160 to 250 years to approximately 60. Hybrid variations with natural-born populations produce significant size differences depending on the non-Engineered parent. An Assault-Class individual with a Jeyrhan mother could stand as short as 6'0", with their strength, the density and weight of their muscle, and the hardness of their tendons being the only physical markers that distinguish them from a large natural-born.
They are incredibly loyal to their companions and the most socially adaptable of all the Engineered classes, readily adopting local cultures and lifestyles wherever they settle. An Assault-Class individual raised in a Jeyrhan district behaves as a Jeyrhan. One raised in the Sentinel district of the capital behaves as a Ngorrhali might, but with an openness the Ngorrhali themselves lack. Their integration is so thorough that their nature only becomes apparent when conflict occurs and the physical reality of what they are overtakes the social persona they have adopted. They reproduce commonly with natural-borns, and their females reliably carry multiple gestation of up to eight individuals per slightly shorter term, a capability Daer designed deliberately and documented in his journals. The drive to reproduce is embedded without hormonal distortion, following alignment with environment rather than compulsive appetite.
It has become common for Ngorrhali to court individuals of Assault-Class lineage, which is genetically speaking a courtship between a population and the blueprint derived from its own DNA. Yuvaari men are also particularly attracted to Ngorrhali women, and the size difference, while dramatic, is irrelevant to men whose culture has trained them to close distance with things that dwarf them and win.
Tactician-Class
The Tactician-Class were not separately designed. They emerged. Daer observed that some Assault-Class individuals were smaller than their siblings but mentally outpaced the template, children who never stopped solving problems and never tired of questions, whose bodies did not match the Assault design but whose minds exceeded it. He watched them from infancy through adolescence and documented the pattern in his journals, writing that they were not soldiers. They were formalized within the Assault-Class during the Era of Fracture, selected from candidates strong in strategy but less imposing physically, and given specialized training to refine their analytical abilities.
They appear ordinary at first glance, indistinguishable from natural-borns until they speak, at which point the difference becomes immediately apparent because they process information at speeds that make natural-born personnel seem slow and they are openly dismissive of the gap. The Tactician-Class is the smallest Engineered variant, and their hybrids range from as compact as 5'8" to as large as 6'8" depending on the natural-born parent, making them the class most capable of passing unnoticed in any population center on the planet. They are direct, dry-witted, and driven by a restless intellect that demands constant engagement. Post-service, many suffer severe anxiety because their minds require purpose the way a body requires food, and without ongoing engagement some take their own lives. They dominate Tier 1 and Tier 4 Overseer positions in the Solarn Contractor Registry, and they are in practical terms the operational minds behind most of the significant military and logistical activity on the planet.
Scout-Class
The Scout-Class represent the furthest departure from the natural-born human template among the common Engineered classes. They are lean and lighter than the other classes with wiry frames that carry almost no excess mass, but males and females regularly reach 7'0" and their build, while narrow compared to the Assault-Class, produces a silhouette that is immediately wrong to anyone accustomed to natural-born proportions. Their sensory capabilities are extraordinary: augmented perception across broad light spectra, atmospheric shifts, scent trails, and subtle movements detected through anticipatory muscle cues. Their cognitive framework masters spatial archiving and multi-layered sensory recall at a level that isolates them from all other populations, as only peers can comprehend the reality they experience.
They are the only common class that cannot pass as natural-born among humans. Their cranial structures show nonhuman proportions, with elongated ocular ranges, subtle skin translucency over the temples, eye pigmentation that shifts in unstable light, and muscle tone leaner and denser than any natural-born frame produces. They startle or frighten people on first contact. They distrust Tactician-Class leadership because Tacticians prioritize logical deduction over direct sensory input, which is the opposite of how Scouts operate. They view combat as a failure of scouting. Their females struggle to reproduce through mechanisms that Daer himself could not fully identify, meaning the Scout-Class cannot sustain itself through natural population growth and every generation is smaller than the one before unless external intervention is applied. Daer noted in his journals that the first Scout toddler "appears strange" and acknowledged that it could not be avoided.
Destroyer-Class
The Destroyer-Class are the rarest of the Engineered and the most extreme, created from Daer's deepening paranoia and fierce drive to protect his brother Emperor Varethis'Auren Kel'varesh amid rising threats. Unlike the other classes, which were designed for the conquest of terrain natural biology could not reach, the Destroyers were created solely for war. Their frames amplify Assault-Class ferocity into something cataclysmic, rooted in Frost Sentinel resilience and scaled beyond anything the other classes approach. They have been known to reach over 9 feet in height, and many who encounter them for the first time assume their deployment armor is exaggerating their size. It is not. They are simply that massive. The Destroyer-Class carries dominant genes with a 100 percent conception rate, meaning any union involving a Destroyer will produce a Destroyer-lineage child, but their gestation period is six times longer than the typical natural-born term, and their desire to both fight and reproduce is extraordinarily low, which means the population remains vanishingly small despite the genetic certainty of their propagation. The smallest recorded Destroyer hybrid was a female who stood 7'7" and weighed 510 lbs, and she could leap and sprint with full deployment gear as if she were an Assault-Class individual. They are the only group on the planet known to live in the same territories as the Ngorrhali ice bears and survive without issue.
Then they stop. Post-battle they shun contact, seek remote solitudes, and rarely form bonds with natural-born humans. The only companions they tolerate disturbing their isolation are Assault-Class, and this tolerance appears to stem from recognition that Assault-Class impulsivity is harmless to them in a way that it would be dangerous for natural-borns. They seek peace. Fewer than 100 have ever taken a contract in recorded history. Those who did acted only due to circumstance or to protect someone else. None have ever continued contracting. They are repulsed by warfare and violence, which is remarkable for beings that were engineered to excel at nothing else. Brannok'Drekan was the only Destroyer-Class hybrid in recorded history, and his death from heart failure after the Warlord Eras ended confirmed that the Destroyer template cannot be safely diluted. It functions at full expression or it destroys the vessel that carries a partial version of it.
Hybrids
Hybrids are the children born from unions between two Engineered individuals or between an Engineered and a natural-born human. They inherit a variable mix of traits from their parents, with some showing clear dominance from one side and others blending traits in combinations that produce capable and adaptable individuals. Rare cases with strong traits from both parents can lead to instability in body, mind, or behavior. In the modern era, no formal state programs exist to monitor hybrid populations. Imperial oversight is limited to documenting unusual combinations that emerge as viable, particularly those never anticipated in the original designs. The most significant is the Assault-Scout hybrid: full Assault-Class physical scale and durability combined with full Scout-Class sensory architecture, a frame built for breaching fortifications and holding ground in extreme conditions that also perceives across broad light spectra, detects atmospheric shifts, reads scent trails, and anticipates threats through muscle cues before they commit to action. This combination is becoming common in Saethera, where Scout-Class communities live alongside Assault-Class companions and the pairings that produce these hybrids occur naturally. They were not intended to exist. Nothing in Prince Daer's designs accounted for what happens when the two most specialized classes merge without either side being diluted. Hybrids are in a practical sense the future of the Engineered population, as the class lines blur with each generation.
Slavery
Every class of Engineered is impossible to enslave for reasons that should be obvious but that people have tested anyway because greed does not account for consequences until they arrive. Assault-Class have been captured as children and raised in captivity by traffickers who believed that starting early enough would break them before they became what they were designed to become. It does not work. As they mature their physical capability outpaces every restraint, and when they break free they cause massacres that expose entire trafficking rings. No one has ever attempted to capture a Destroyer-Class even as children because they are incredibly dangerous from birth. Engineered individuals who are captured in the modern era are killed immediately rather than sold, because every trafficker on the planet has heard the stories of what happens when the attempt is made and knows that the cost of trying is annihilation.
Cultural Integration and Restrictions
The Engineered are banned from competing in nearly all competitions that measure physical skill and capability, including the Yuvaar Hunting Games. The sole exception is the Emperor's Night March, an annual pack race across Coastal Thazvaar where Engineered teams carry 120 kg packs on a longer route ending in Binol under stricter rules than the natural born format. Their adaptability allows most to integrate seamlessly into whatever culture they are raised in, adopting local traditions, speech patterns, and social rhythms so thoroughly that their nature only becomes apparent under stress or in combat. The exceptions are the Scout-Class and Destroyer-Class, who prefer isolation for different reasons: Scouts because their sensory reality separates them from everyone, and Destroyers because what they are capable of makes proximity to others a burden they choose not to carry.
Legacy
Daer wrote that the Engineered were living lives he did not design, making choices he could not predict, forming attachments and conflicts and purposes that had nothing to do with him, and that this was correct because it was what survival meant. They were not tools. They were the continuation of the species into places it was never built to reach. He gave them life and his brother Emperor Auren gave them freedom, and when Auren was assassinated, the Engineered remembered who had freed them and eliminated every conspirator, every family, and every lineage involved within moments. Daer vanished afterward, and the Engineered have continued without him for over a thousand years, which is what he designed them to do.
For individual class details, see the Humanoid Codex.