Regenerador

Regenerators, in Resident Evil 4, are lumbering monstrosities only found in the game's final scenario-the Island. They, to honour their namesakes, regenerate lost limbs as soon as they are shot.

Characteristics
They are inhuman bipeds that slightly resemble humans, save for the fact they have no nose, and have monstrously developed fangs and claws. When their limbs or torso are shot, they immediately blow away, only to regrow in a flurry of tentacles some seconds later. Even their heads take little time to regrow after being blown. When their legs have been destroyed, the fall to the floor and crawl at incredible speeds, being able to attack even when they have been downed. Their main method of attack is to either claw of bite their prey. Their only weak point is, in fact, the internal Plaga they carry. These leech-like Plaga are the true controllers of the Regenerator, and are easily blown off with a rifle equipped with an infrared visor. Unlike their related cousins, the Iron Maidens, very few of the Regenerators have a fifth Plaga on their backs.

Role in Resident Evil 4
They are considerably more dispersed than their Iron Maiden cousins, and the first one is encountered in one of the island's autopsy rooms, where it rose and attacked Leon as he took a special keycard. Later on, Leon encountered some more dispersed through the last levels.