Shadowhunters, also known as Nephilim, are a secretive race of beings who are humans born with angelic blood. They are the appointed warriors on Earth of the Angel Raziel. They are appointed specifically to control and preside over the Shadow World, as well as over the demons and Downworlders who inhabit it. They have fought the demonic forces valiantly for well over the span of a thousand years, creating their own culture and civilization within human society. Their mandate is to keep the peace in the Shadow World and keep it hidden from the mundane world while protecting the inhabitants of both worlds.
Despite their ancestry, Shadowhunters are mortal and therefore vulnerable to old age and death; however, their angelic blood endows them with special abilities that allow them to achieve feats beyond humanly possible through the application of angelic runes.
Nephilim Physiology: Shadowhunters possess a variety of enhanced physical and mental abilities granted to them by the blood of the Angel Raziel flowing in their veins and also by the angelic Marks of the Gray Book. They also have the power to perform tasks unique to their species, such as the ability to use and call on the power of the angels for their seraph blades. This includes enhanced strength, agility, coordination, and stamina, which only improves over time and practice.
Runic Magic: Due to angel blood in their veins, Shadowhunters are able to apply runes on their skin without any danger. These Marks, in tuurn, give varied effects that serve to benefit the wearer.