F.G.R (Fallen Gene Recombinator) was created by Dr.James Cero on the 3rd of august 1996, Dr.Cero was examining ways in which to instead of creating new B.O.Ws, he found trying to improve the existing B.O.W. may work alot better, the serum however was unfinished, as the events of raccoon city cut his work short and he only made it out, with one remaining sample, the other was mailed to his friend Steven Fallon with orders to test it on what he considered a superiour specimen. Several years later the serum was completed and used by Cero himself he renamed it T.A.R the True Ascension Recombinator serum.