The Hunter δ ("Delta") was a Bio Organic Weapon created by Umbrella in its waning years as part of their black market weapons program. It was, as its name suggests, based on the hunter line of B.O.W.s though how it differed from the other models is unknown beyond the fact it seemed to be somewhat resistant to the cold as seen by its operating in the midst of a snowstorm unimpeded. Three of these hunters were encountered by Chris Redfield and Jill Valentine and a young girl named Anna in a Russian Village in the Caucasus in 2003. The creatures had been in a storage facility hidden below a flour silo which Albert Wesker had been trying to locate and escaped confinement after Redfield triggered a dust explosion to wipe out a horde of zombies. Although the hunters were seemingly dispatched by Redfield using his grenade launcher another one later appeared and made the foolish mistake of attacking Wesker who easily dispatched it with his superhuman abilities.