(Covers information from the D.C. comics)
Abe was a senior Umbrella researcher, based at Umbrella's headquarters at Queck Castle in Germany.
During the Raccoon S.T.A.R.S.' search of the building, Abe was found by Jill. He tried to reason with his infected twin, Kane, but was unsuccessful. When Jill met up with the other S.T.A.R.S. members, Abe activated the facility's self-destruct system, ready to escape by killing everyone else. He was unable to escape the blast, however; Chris attacked him in the castle before jumping out of a window.