Rogue Shadow

Rogue Shadow is commonly thought of as a demon. He could possibly be one as he has vast knowledge and knows how to kill anything. His appearance would be commonly as a shadow thinner than paper sliding against all surfaces. He isn't deathly afraid of the light, nor is he injured by it. He is weakened slightly by it. His maximum potential is hidden in the shadows. Most who know his tale are either dead or didn't witness it firsthand.

He has a vast knowledge on strategic tactics, and a great military leader. He isn't a god, but he is powerful, considered a demagogue when you hear him speak to his army of soldiers. He controls an Army of Rogues, most of them possessing a human giving them superhuman abilities, such as the ability to blend into the shadows, being cold-blooded, emitting dark matter just by focusing on it. He has lived thousands of years, but has rarely ever been seen by humans. He has vast knowledge on weaponry of all kinds. Along with that knowledge, he has vast experience using them.
Rogue Shadow chooses one lucky person and takes his or her body until their mind, body, and soul merges with Rogue and Rogue Shadow always prevails. He has taken many people, but he can't keep the body forever as it usually deteriorates witin 100 years, the normal life expectancy of a human, but some humans lasted 500 years or more. Not that they ever seen them...