A Regenerador is a monster created by inhumane augmentations, utilizing multiple Plagas and human test subjects. Regeneradores are named for their artificially-created high metabolism. If a Regenerador is injured, small tentacles sprout from the wound and appear to 'knit' new flesh, recreating entire limbs within seconds. This allows the Regenerador to recover from bullet wounds, lost limbs, decapitation, loss of lower body or even loss of the entire upper torso with little loss of overall health.
The Regenerador appears as a large, vaguely, human-shaped creature covered in hairless, seemingly-rough, gray skin. Their mouths are large, taking up most of their otherwise-featureless faces, and are filled with needle-like teeth which force the Regenerador into a grin. They have no nose, ears or sexual characteristics. Their internal organs (including their brains) seem to have coalesced into a uniform mass.
Although they are usually slow, walking with a distinctive, unnerving, palsied gait, Regeneradores are capable of frightening bursts of speed when attacking, viciously slashing and biting, and stretching their arms to unnatural lengths to grab their prey. A Regenerador may randomly run at the player and knock Leon down with its powerful arms, which is incredibly frightening to the player as it will happen randomly and quickly.
Regeneradores are inhumanly flexible as they can be knocked back into impossible positions that would snap the spine of any human, bringing themselves up with ease, suggesting the absence of a conventional skeletal system. They can also stretch limbs to extreme length in order to grab their prey and when their legs are blown away they can move forward very quickly by slamming themselves toward the ground causing them to jump forward. This is all possible due to their bodies almost completely, if not entirely, consisting of pure muscle manipulated by the leech-like Plagas hiding in its body. The presence of a Regenerador nearby can be instantly detected by the sound of their erratic and strained breathing. Their accompanying musical theme when they spot the player only adds to their frightening demeanor.