Gene virus II

William Birkin underwent distinct stages of transformation each time he was sufficiently damaged, and it is most likely other G-Carriers would also undergo similar stages, although the unpredictable nature of G-virus mutations means that the details would differ. It must also be noted that Birkin was in an extremely decrepit state when he injected the virus into himself; this played an important part in his mutation and influenced the changes his body underwent; thus, it was to be assumed all G-Carriers shall evolve in a different way, depending upon their state of health, time of infection, and details such as those. This was demonstrated by the changes seen upon Curtis Miller, whose changes were influenced as well by the injuries he sustained, and developed characteristics vastly different from Birkin, such as an elongated prehensile tail, height beyond ten feet, and an initial phase upon which he was still practically fully conscious; all of this, even though he retained a massive eye and claws as a nod to Birkin's changes. It also appears as though a separate, conscious mind and independent brain is created in every G-Mutant; Curtis initially retained his mind and consciousness until the eye on his shoulder spotted his sister, then the animalistic side took over. This is more evident when the mutated Curtis sees a picture of his family, in which he forcibly stopped his right arm, trying to restrain it (all the while the eye is furiously blinking), showing that there is a separate consciousness within the eye itself.
Despite the massive shape shifting, the virus apparently leaves traces of the memory intact, allowing brief sparks of sanity in the minds of the afflicted. However, such sparks are brief and usually end in the complete destruction of the host's mind, leaving only mindless, berserk mutants of unimaginable power. Because of this, the G-virus is seldom considered to be a viable option for bioterrorism.