The t+G-virus (short for Tyrant+God virus) was a hybrid virus with electrical properties developed by the Umbrella Corporation by fusing the t-virus and G-virus and resolving some of their more volatile attributes. Its primary goal was the introduction of an extra defense for infected creatures in the form of an extremely high-voltage electromagnetic barrier.
History
On September 30, 1998, the G-virus developed by William Birkin was successfully recovered from Raccoon City and transported to the company's France branch, where research was carried out in order to apply it for B.O.W. (Bio Organic Weapons) development, but it quickly became clear that the virus' unpredictable evolution and lack of control did not give it the stable performance demanded from a weapon. For that reason, B.O.W. research involving the G-virus was frozen.
At an unknown time, the Umbrella Development Laboratory belonging to the company's Paris branch began an alternative project for the G-virus. They hypothesized that by fusing the G-virus with the t-virus at a genetic level, the t-virus would be able to weaken the effects of the G-virus by acting as an "antibody", an inhibitor to the G-virus, through the swapping of some of its genes and proteins with their weaker equivalents in the t-virus, a method made possible due to their genetic similarities inherited from the Progenitor virus. A goal of the project was to add the ability for the virus to make an already infected creature form an electromagnetic barrier around its body to protect it and prevent damage-induced mutation. During development, cellular damage and necrosis caused by the two viruses was greatly reduced, while the breeding capability of the G-virus and its affinity for manifesting large eyes around the body were also removed.
Eventually, the project saw a glimmer of success and the researchers succeeded in giving the virus electrical properties in the t+G-virus agent "v.0.9.1", which was injected into a Tyrant as part of an experiment. However, the virus failed to manifest an electromagnetic barrier and caused deformations in the Tyrant's body, showing the researchers that there was still room for improvement. This Tyrant was given the designation of "Tyrant 091" and deemed a failure, but gave the researchers necessary data to help make the virus more stable. They then developed the trial agent "v.0.9.2", which successfully yielded a high-voltage current and was scheduled for human experiments. The new strain was stored on the Spencer Rain luxury cruise ship owned by Umbrella to be used as a showcase in a secret biological weapons auction.
Before human testing with v.0.9.2 could proceed, a terrorist group led by former Umbrella employee Morpheus D. Duvall hijacked the Spencer Rain and stole the t+G-virus, and Duvall was eventually injured. To save his life, he injected himself with the virus and became a Tyrant, but retained full intelligence. Later, after sustaining significant molecular damage from the "Charged Particle Rifle", the G-virus began to go out of control within his body and quickly transformed him into a giant blob of mass through mutation to the point where his bloated body exploded.
It is unknown whether any samples of the t+G-virus remain, and it is presumed lost.
Attributes
The most significant attribute of the t+G-virus was its electrical properties. The virus was developed from the outset with the hypothesis that amplifying a creature's inherent electrical currents, such as that of the sinoatrial node in the heart, would enable the development of a high-voltage electomagnetic barrier around its entire body. This would not only act as a form of defense against physical attacks, but had an underlying purpose to prevent the combined viruses from compensating for damage by causing additional mutations. Although this particular characteristic was unavoidable, removing the threat of damage altogether nullified the potential risk of over-mutation which would make a creature uncontrollable.
In addition to preventing a creature from going out of control due to mutation brought on by damage, the virus also eradicated another of the most common issues present in the viruses. Cellular damage was greatly reduced with the intent that erosion of a creature's cells, especially those of a previously developed B.O.W. which has already been eroded, would lead to a substantially inferior creature unsuitable for use as a weapon despite the improvement in its defensive properties. This erosion would also affect intelligence through necrosis of the brain, an effect most undesired due to the already low levels of intelligence found in most B.O.W.s.
Only one human, Morpheus D. Duvall, was ever injected with the stable form of the virus and as such, the following characteristics may not be true for other potential hosts. Duvall's mutated form greatly resembled a Tyrant, however in actuality this form may have been more influenced by the G-virus, with its most notable trait being the enlargement and development of claws exclusively on the right arm without the need for outside interference. The G-virus' affinity for creating eyes around the body was removed from the virus, so they did not manifest in his mutation even when the G-virus went out of control due to molecular damage. The greatly reduced cellular damage also gave his new form a "clean" look devoid of more grotesque mutations and he was able to maintain full intelligence and cognitive ability due to the virus having little to no effect on the brain.