Greg Mueller

In retrospect, that entire "t" project was a total disaster. Brute force should not be the only criteria for a weapon. It must also be beautiful, unique, and god-like.

Greg Mueller was an Umbrella researcher who rebelled against the company.

Biography
Greg was assigned to an unnamed facility in Raccoon City. During his time there, he was involved in the events surrounding the Arklay hospital and the illegal human drugs trials being conducted there. At one point, he began researching into the experimental "Tyrant"-class B.O.W., which he attempted to develop on his own. The fruit of his work was "Thanatos", a seven-feet-tall killing machine. Unlike other Tyrants made that year, Thanatos was a very intelligent, strong, and agile creature.

However, when Umbrella began plans to mass-produce the Tyrant, Greg became furious, believing that this would take away from the individuality and uniqueness of his subject. Like many Umbrella researchers, Greg viewed his creations as works of art, and not mass production weapons as Umbrella intended, refusing to help them any further.

To further spite Umbrella, Greg helped Peter Jenkins, a Raccoon University professor, to create a cure for the t-Virus, Umbrella's most prized viral weapon.

Due to his rebellion, Greg was marked for assassination by Umbrella, who sent a U.B.C.S. team to assassinate him and retrieve a blood sample from Thanatos. Anticipating this, Greg intended to have Thanatos eliminate his would-be assassins. Thanatos largely achieved this, quickly decimating the squad, although one member, Nicholai Zinoviev, ultimately managed to kill Greg with a silenced 9mm pistol from above the ceiling.