T-002, named simply Tyrant, was the result of an improvement on the techniques used by Umbrella to attempt to create a super-human soldier. This involved a massive infection of the t-Virus
onto a human host with additional surgery to enhance the creature even further. The main drawbacks with the earlier incarnations of Tyrant is that the intelligence was reduced massively - but in this case it was found to have only slightly reduced intelligence from it's initial human form, as Umbrella had by this time developed an improved strain of the t-Virus
(named Epsilon) and the host had the required genes for the mutations to happen optimally. Otherwise it could have just become a regular Zombie
The host was a human male, and through the t-Virus
infection it developed an enormous clawed left hand as well as an increase in muscle mass and skin thickness in certain key areas. It also developed a special organ in it's body which was designed to process and disperse the t-Virus
into the air which is how the initial t-Virus
outbreak began throughout the Mansion Incident. It's surgically-enhanced circulatory system takes over much of the upper half of it's body with veins and arteries covering much of it's chest and head and it also has a number of bulbous growths on it's right leg, and this is potentially where the t-Virus
Umbrella's goal was to conduct further experiments with the T-002, including pitting the creature against a squad of military forces and also to continue to add further improvements through surgery. At this point it had been outfitted with a larger heart to cope with it's increased size, as well as a Power Limier to help hold unwanted mutations at bay. However, because of the t-Virus
outbreak this progress stalled and the unfinished creature was held in containment.
The Tyrant was released from containment by Albert Wesker
, and then it was subsequently overpowered by the rest of the S.T.A.R.S. team who were present. However, soon after this it's Power Limiter
was disabled and the further mutations began to manifest which transformed it into a much more powerful beast named a Super Tyrant which could no longer be incapacitated with small arms fire. It was eventually destroyed from a direct-hit by a missile.