Hybrid

"This creature is the completion of a cycle. Its role in the cosmic order was preordained when the stars were young. Behold the culmination of your history."

- Samir Duran discusses the fate of the universe with Zeratul.

The protoss/zerg hybrid is a species created by Samir Duran through careful genetic manipulation of captured zerg and protoss specimens. The hybrid is a "perverse" fusion of the two species, with the potential to affect the future development of the universe. Similar creatures may also have been developed secretly on Aiur.

Overview
"The xel'naga will not be reborn. Instead, a monstrous and powerful perversion of both protoss and zerg will be set loose upon the universe, and all that we know and cherish will fall in their wake."

- Preserver Zamara



The protoss/zerg hybrid is an experimental species created by Samir Duran at the behest of a "greater power" through direct combination of the DNA of the parent species.

Previous incarnations of the xel'naga had been created through "natural mergings" of other species which possessed purity of form and essence as part of their natural life cycle. According to the protoss preserver Zamara, however, Duran's experiments are a "perversion" of what was to be (as they have nothing of the natural cycle of the xel'naga in them), and if his attempts to "unify" the species become successful, "a monstrous and powerful perversion of both protoss and zerg will be set loose upon the universe, and all that [the protoss and terran] know and cherish will fall in their wake".

The Grand Experiment
The xel'naga were a long-lived species but eventually their time would come to an end. To stave off extinction they devised a way to increase their numbers by uplifting and peacefully merging over eons two species. If one species was "pure of form" and the other "pure of essence" then they believed the merged result would be a new incarnation of the xel'naga.

The xel'naga first uplifted the protoss of Aiur to be pure in form, before departing to the world of Zerus and beginning to uplift the original zerg, which they considered to be pure of essence. as part of their plan, the xel'naga created the Overmind, a collection of zerg sentience, in order to enforce a purity of essence.

The Overmind's free will was undermined by a overriding directive to destroy the protoss. This was part of a greater plan by a being known as the Dark Voice to remold creation in its own image. The Overmind disagreed with its directive but could do little to resist.

The Overmind ordered its minions to attack the worldships, they threw the xel'naga plans into turmoil.

The Overmind intended to make the two races one, which would make the zerg "perfect". The protoss became aware that it wished to finish the xel'naga experiments. Tassadar intended to destroy the Overmind, as he believed it would "run rampant throughout the stars, consuming all sentience – all life."

Duran's Experiments
"Magnificent isn't it?"

- Samir Duran describes the hybrid to Zeratul

On the direction of his superiors, Samir Duran worked to produce a perfected protoss/zerg hybrid. By the end of the he had established development bases on multiple worlds and successfully created numerous specimens. The work was accelerated by Sarah Kerrigan's assimilation by the zerg. Duran claimed that "this creature is the completion of a cycle. Its role in the cosmic order was preordained when the stars were young."


 * Main article: Dark Origin

One base on a dark moon was discovered accidentally by the Dark Templar Zeratul. He was en route from Char having killed the second Overmind for Infested Kerrigan, and slain Raszagal to save the Matriarch from Kerrigan's influence. The prelate sought to find and rendezvous with Praetor Artanis and thought the protoss energy signatures emanating from the moon were from protoss stragglers or the praetor's forces.

Zeratul led a party to the surface and found not protoss but the hybrid development base instead. He was puzzled by terran mercenaries seemingly using protoss technology, and the protoss, zerg, and infested terran specimens in stasis cells. Zeratul was horrified when they discovered the hybrid specimen's cell. The prelate was disturbed further when he was contacted by Duran, who told him the experiments were being sponsored by a greater power and specimens were secreted on multiple worlds. Zeratul destroyed the hybrid before departing.

Zeratul was unable to explain his unnerving discovery and kept it secret but embarked on a solitary fact finding journey. In 2503, Zeratul encountered the preserver Zamara, and they exchanged information. He told her about the hybrid he saw, and she told him about the xel'naga cycle. According to Zamara, Samir Duran's experiments are a "perversion" of what was to be, and if his attempts to "unify" the species become successful, it will result in "a monstrous and powerful perversion of both protoss and zerg will be set loose upon the universe, and all that [the protoss and terran] know and cherish will fall in their wake".

Zerg Experiments
The Overmind absorbed numerous xel'naga and discovered the protoss. During the Great War the Swarm invaded Aiur intent on combining with the protoss to achieve "perfection". However, it was discovered that the Khala protected the protoss from infestation.

Xel'Naga
The xel'naga constructed a temple on the world of Bhekar Ro, which came to be settled by terran colonists. Shortly after the Great War, the temple emerged. A battle between Terran Dominion Alpha Squadron, the protoss 7th Fleet and the zerg Kukulkan Brood erupted over the temple, which absorbed protoss, terran and zerg into itself, as well as the energy of a nuclear weapon.

An energy being emerged from the temple, and it continued to absorb protoss and zerg, combining their genetic material within it as part of its maturation process. However, it released the absorbed terrans unharmed before flying away.

Other such energy creatures have been observed, but they did not absorb any protoss or zerg.

Ulrezaj Experiments
Ulrezaj, the dark archon terrorist, created genetically enhanced zerg as part of his plan to drive the protoss of Aiur from Shakuras. He would use warped khaydarin crystals created from Dark Templar and zerg energies, as well as genetics stations, to modify zerg to become more powerful. These zerg would be under his control, and would be immune to the effects of the xel'naga temple of Shakuras. This aspect of Ulrezaj's plan did not come to fruition as a small elite force of protoss, including a Dark Archon Hero, destroyed the warped crystals.

Ulrezaj created strange creatures which he kept in vats in an underground city underneath Aiur. Their true nature is unknown, but they have psionic powers and his loyal Tal'darim were taught to trap zerg for him. The preserver Zamara suggested they may be a type of hybrid.

PAX


At the Protoss Advance/Experimental Facility, protoss scientists conducted an experiment with creep, infecting it with a virus. The creep began to act strangely, attacking two of the zealot guards sent to oversee the dangerous project. While one guard killed himself, the other became infested despite his connection to the Khala. The creep used its Khala-influencing abilities to drive the protoss mad while the hybrid zealot went on a rampage, but it was frozen by the last surviving scientist, an act which destroyed the facility.

Terran military personnel arrived at the facility afterward, finding the special creep sample to be frozen, but intact.

Terran Experiments
The Terran Dominion conducted hybrid experiments at a secret facility at Castanar. The gene splicing technology was far more advanced than anything the terrans had, suggesting the Dominion had help.

Discovering the facility, Raynor's Raiders attacked it, discovering numerous hybrids being "cloned" within. They destroyed the fusion core, causing a containment field to weaken and a particularly powerful hybrid reaver emerged. The Raiders fled as it went on a rampage, attacking protoss, zerg and terrans alike.

The Second Great War
On the eve of the Second Great War, the Dark Voice began moving its hybrids and executing its grand design for control. The hybrid destroyer Maar went to the protoss archive world of Zhakul and attempted to leech the energies of preservers. As it was doing this, it had also enslaved the Zhakul Guardians that protected the planet who now served Maar and protected him from intruders. The hybrid was ultimately stopped by Zeratul who came to the planet to consult with the preservers regarding the ancient xel'naga prophecy.

Armageddon
The zerg Overmind had long forseen the events of the future and learnt of what the hybrids role would be in the coming times. It was aware that Dark Voice intended to enslave the Zerg Swarm and make use of it to destroy the protoss as well as extinguish all life in the galaxy except their own. There was only one being that threatened the Dark Voices plans and that was the Infested Kerrigan who was now the ruler of the Zerg Swarm.

In one possible future the Overmind had seen, the Queen of Blades was killed thus allowing the hybrids to take control of the Swarm. With them under the Dark Voices control, the terrans of the Koprulu Sector were completely destroyed as a result and the only force that stood in the hybrids way was the last vanguard of the protoss forces. Despite their valiant last stand, the protoss were destroyed by the hybrids and the Swarm after which the Dark Voice commanded his minions to annihilate the zerg thus bringing about the extinction of the two species.

Known Hybrids

 * Test subject twenty nine
 * Maar
 * Ruom (created through PAX experiment, and may be significantly different from Samir Duran's hybrids)

"Infested Protoss"
Chris Metzen has said "there are no infested protoss, period" and Dustin Browder has said "based on the lore, the Protoss do not become infested. The combination of the two result in a hybrid race". Blizzard later contradicted this statement.