Werewolves, also known as Lycanthropes, are a race of partially-human supernatural creatures, able to morph into a combination of human and wolf. It has been stated that werewolves and skinwalkers are cousins. In the early stages it can sometimes be cured with a transfusion of live blood from the sire werewolf.
Werewolves are humanoid carnivores, the ultimate combination of wolves and humans. They feed on prey found nearby, which, due to the increase of urban areas, are mostly people. When they devour the flesh of a victim they leave a recognizable trace on the prey: they always eat the heart, although they do sometimes eat more of the body. The transformation only occurs after one bites a victim, the way werewolves continue the spread of lycanthropy. However, they are also capable of having children who are born werewolves. In their form, their bodies change rapidly, changing into a fitting definition of predators. Their nails increase to sharp, long claws, fangs increase in size and eyes resemble those of a wolf rather than of a human. Some of those who are bitten don't survive the change and the timing of the change can range from the next full moon to anytime at all with purebloods.
Shapeshifting - Werewolves transform into a wolf-like creature only under a full moon.
Infectious bite - While in beast form, a werewolf can turn another person into a werewolf through a bite. Purebred werewolves are capable of doing this at will.
Claws and Fangs - Werewolves have powerful claws and are able to cut through solid walls. Their fangs can tear human flesh and can rip out a human heart right out of their chest cavity. Pureblood werewolves are able to transform just their claws without transforming fully.
Super Strength - A werewolf's strength is much greater than a human. They can easily overpower humans and can rip flesh and bones with amazing force, their strength is notable even for monsters, as they have been observed as being able to smash stone with their bare hands. Even while in human form, werewolves have incredible strength, as one newly-bitten werewolf saw no challenge in lifting an adult woman high above his head using only one hand, and would accidentally rip a door off its hinges also using virtually no effort. All werewolves seem to have a similar level of strength, however a possible exception to this would be the Alpha Werewolf, as Alphas are naturally stronger than their descendants.
Enhanced Agility - Their agility is greater than humans, often allowing them to perform leaps across incredible heights and distances, and can even scale vertical surfaces. Their agility also allows them to easily and rapidly sprint.
Super Speed - A werewolf can move very fast; they are able to move from place to place in seconds. The recently turned Brian Wilcox was able to cross an entire room in seconds, being able to appear in front of the then human Kate before she could react.
Super Stamina - Werewolves do not tire easily, allowing them to physically exert themselves for longer, and in a superhuman physical capacity.
Super Senses - All werewolves are able to see better than humans in darkness, similar to actual wolves, their sense of smell and hearing is equally enhanced. This allowed the werewolf Garth to focus his hearing to clearly hear a conversation in a different room. Werewolves are well known for being excellent trackers, being capable of using their sense of smell to track targets.
Invulnerability - Werewolves cannot be killed by conventional means and weapons. Certain supernatural weapons, as well as silver however, can kill them. Werewolves can also be killed by decapitation, as well as certain supernatural beings.
Regeneration - Werewolves can regenerate all non-lethal damage, purebloods are even able to completely heal their original bites. Werewolves can even heal damage that would be fatal to humans such as injuries from a car wreck. Even if they are turned into a werewolf after suffering such an injury, they can heal.
Silver - A werewolf's main weakness is their vulnerability to silver or any substance containing silver, as they can be killed with a silver knife or bullet. Contact with silver will hurt them. An injection of silver nitrate was able to kill one. Grace-enhanced werewolves are immune to silver.
Regular Werewolves-Regular werewolves can only turn into a werewolf during nights coinciding with the peak of the lunar cycle during their sleep. Despite having no control over and during their transformation, certain fragments of their personality and fears can be imbibed by the werewolf's mind, especially strong ones. Aside from hunger, suppressed fears or aggression can drive them to kill in their beast form. As such, a werewolf's attack may be controlled by these emotions, depending on which one is dominant.
Pure-blood Werewolves-Werewolves that are closer to the Alpha up to the fourth generation are referred to as Purebloods. Their human side retains more control over their animal side, and they can remember afterwards what happens during their transformation. They can transform any time they want. Pure-bloods can also access some of their powers such as enhanced strength and speed while in human form. Purebloods can also feed on just animal hearts, but if they get a taste of human hearts, it is harder to control themselves. They will be drawn to eating human hearts, the temptation escalating with each heart eaten. It is still difficult for them to eat animal hearts even if they can resist (one stated he had to force himself to swallow them). It is indicated that purebloods are both those bitten by a first, second and third generation werewolf and those who are offspring as it has been shown werewolves can have children and one existed that was a fourth generation werewolf.
Grace-Enhanced Werewolves-By combining their blood with angelic grace and letting them drink it, the archangel Michael was able to create werewolves with enhanced abilities. These werewolves were stronger and faster than their normal brethren and had an immunity to silver. They were still vulnerable to decapitation however, which is confirmed to be the only way to kill them.