Thanks to his possession of a compatible genetic code for the Tyrant, Sergei was elevated to highly influencial positions within Umbrella. A total of ten clones were manufactured.
Four of these clones were most likely sent to Umbrella Europe, as part of their research on the
NE-alpha parasite and the Nemesis Program.
A total of four T-103 Tyrants were imported for usage as test subjects and the parasite was implanted into the spine of the T-103's. Once inside, the parasite immediately began to catalyse the
T-virus cells in the body and began its invasion of the brain. A new brain was formed behind the original and took over the initial tasks of the original brain. The NE-alpha also greatly enhanced the speed and healing ability of the T-103 while giving it the intelligence unlike that seen in any B.O.W. created by Umbrella.
All four T-103 models were inplanted with the NE-alpha parasite. However, one of them maintained the capability of independent thought and attempted to escape. This marked the first time that the research team would see the impressive enhancements of the NE-alpha first hand. The subject was later reacquired and destroyed, with the remaining three models having their intelligence limited. The NE-alpha was officially given the title of "
Nemesis", with the surviving T-103 models being renamed as "Nemesis T-Type", after the Greek God of Vengeance. One of the models, the Nemesis T-02 was later deployed via helicopter into
Raccoon City to test its capabilities in live combat. In addition to this, its primary mission was to eliminate the surviving members of
S.T.A.R.S., a mission that gave the Nemesis its name in reference to Umbrella wanting revenge against S.T.A.R.S. for destroying the T-002 and the Arklay Research Facility.