Kapitel 2038: 2038. Arrows And Punches

'Vampire spawn; shadow walker

This is a monster that the monstrous vampire corrupted when they also became a monster instead of following the natural flow of their own race. This would normally be one of their vampire kin, a turned vampire from a sentient race that would follow and serve them. 

However, the monstrous change caused the shadow walker to become mentally unstable aand fall in to madness. They also were forced to fuse with the darkness mana within their body and become partly made of shadow. 

This made them incredibly closer to the darkness mana and able to control their shadow as a weapon and another extension of their body. However, damage to their shadow will also harm them. This drawback is why it is a very dangerous and taxing process. Only a true shadow walker would be able to do so without any dangers and mental damage. It would often take over sixty years of training to do this.