Hunter (left 4 dead)

 The Hunter  is an agile Special Infected whose mutation has granted him incredible strength and agility.

 The Hunter appears in a faded blue hooded sweatshirt and dark brown

 sweatpants. His hood is always pulled down and over his face which on close inspection reveals that the skin around his eyes has either been clawed off or has mortified as a result of the infection. What remains of his eyes emit the white reflective glow displayed by Common Infected in the dark; although this effect may be light reflecting off the blood leaking from his eye sockets. The limbs of his outfit are battened down with duct tape, in a manner similar to Traceurs, practitioners of parkour, which is done to lessen wind resistance.

Hunters are primarily identified by their distinctive and intimidating growl or the screams and snarls they emit upon sighting a Survivor or whilst attacking. Hunters are the only Special Infected who do not make any noise while in a passive state.

The Hunter is the least visibly mutated Special Infected and superficially resembles a Common Infected. It has yet to be explained how the Hunter's mutations onset, whether it be genetic, biochemical, or a Hunter-specific strain of the virus, but the mutations seem to be gender-linked as only male Hunters have been observed. The Hunter's reaction to the Infection has granted him an increase in lower-body strength. While not creating massive muscle growth like the Tank, this added strength has given the Hunter the ability to repeatedly jump and pounce from long distances and rapidly scale the sides of buildings with ease as well as toughen its legs in order to withstand the great distances and heights it can achieve. Decreased pain response visible in all sufferers of the Infection also results in the Hunter not suffering from perpetual lactic acid build up from muscle overexertion or impact damage after experiencing a large fall. At the same time, there seems to be some sort of muscle delay after an initial attack (post-attack recharge) where the Hunter is not able to move as swiftly. One of the most notable physical observations is that the Hunter lacks eyes. Whether this is self-inflicted, a by-product of the Infection, or both, is unknown.

The extent of damage to the Hunter's sight suggests his other senses are far more developed than those of typical Infected, allowing him to hunt with far greater efficiency. It is possible that the screeching noises he makes and the growling are his own echolocation method. He might also use scent to tell the Survivors apart from Infected. As with the other Special Infected, he is not distracted by such high-frequency noises as Pipe bombs or car alarms going off. Hunters also appear to be the only Infected with a self-defense reflex: when shot at a distance and knowing it cannot pounce, the Hunter will sometimes jump away into safety

