He is actually a Demon who has dyed his hair bleach white (From blood red), and got cyan contacts (also from blood red) to prevent from being hunted by demon hunters.
"Do I look evil to you?"
Eckhart is a quiet and dark person. He doesn't care much about anyone unless it benefits him. He does have a soft spot for his brothers, as in demons and other servants of darkness, and is very protective of them. He is a demon who has left the depths of hell to spread darkness and death along his path. He also recruits lost souls into the darkness and transforms them into any being of darkness they desire; however, he cannot force people into the darkness.
Eckhart keeps some spare money for when he needs to travel. His weapons are his shadow powers. He can manipulate the dark and shadows and turn them into weapons of destruction, or a wall of dark defense. He is able to summon his personal weapon, Lamina Tenebrae, which translates to "Blade of Darkness."
He is a servant of the darkness who believes he brings lost souls power and salvation through rituals. He is able to transform willing souls into demons, such as his self, by mixing his blood with the host. He rarely offers to do such, and prefers to kill them. IF he does offer and they refuse, he kills them. Plain and simple.
((Good enough?))