The Hunter γ (development code: "MA-124") model of Hunter was developed by Umbrella Europe as part of a reinvestigation into amphibian-based B.O.W.s, which failed ten years earlier with Dr. Marcus' Lurker. It was nicknamed the "Frogger" by its development team.
The Hunter γ was developed based on information retrieved from the American branch's Hunter α and β models. Contrary to the American design method, the Hunter γ involved human DNA being bonded with a fertilised amphibian egg with the t-Virus.[excerpt 1]
A clawless version of the "γ" was also being stored in the water treatment facility underneath Raccoon University at the same time. Quickly breaking out of their storage capsules also on October 1, these Hunters reacted well to the damp, subterranean environment and the pools of water in the plant.
While being considered improper for a B.O.W. due to the conditions necessary for survival, Umbrella nonetheless continued to produce the "γ" model as late as 2002, where a number were sold into the hands of Javier Hidalgo.