The Regenerators are so freaky that they have their own theme song. They are humanoid creatures, with gray skin, a large disturbing mouth, and can stretch their arms rather far. These are human test subjects that have been given invisible parasites that attach to the outer skin, their skin become an almost semi-liquid, bullets pass right through as if nothing happened.

Their only weakness is the parasite themselves. Leon had to find a thermal scope in order to see the parasites and shoot them off, once done the regenerator explodes.

A further evolved version of the Regenerator nicked named the Iron Maiden also exists. It has the ability to create spikes on its skin, like some deranged blow fish. The Iron maidens love to stretch out and grab its victims and impale them with their spikes.