Hadrian Potter. Neglected by parents, Hadrian is brought up and trained with best friend/brother Neville Longbottom, who also ran away at the neglect of his guardians. Strong/Powerful Trained Harry. Dark/Grey.
Summary: Harry Potter is a little wizard like the others, even if his dark magic seems powerful, until the day his true identity is revealed. He is Alexander Black, missing son of Sirius Black. How could he fight on the side of the light when the latter removed it? Dark Harry, Dumbledore and co manipulators.