A redesign of my OC. Eyes look more normal now, cloak is darker, and hair is also darker.
 
Actual Name: unknown  
Aliases: Manerg, probably over 100 others  
Family: all dead, no he didn’t kill them all  
Age: unknown, probably same as Twilight  
Race: earth pony  
Residence: no permanent one  
Friends: none  
Enemies: everyone
 
Bio/Personality:  
He was considered weak by everyone and often got into fights, usually losing them. He used to have a few friends but eventually locked himself up and learned not to trust anypony. Unlike other creatures, he doesn’t need a horn to use magic. He is an anarcho-communist.
 
He corrupted himself with dark magic which caused his eyes to become red after somehow breaking into the restricted area of the canterlot library and stealing a few books. This put him on a watchlist, but as he was a master at hiding and creating fake IDs, the princesses were unable to keep an eye on him.
 
He regrets killing Princess Twilight and Princess Luna, but does not have the magic to revive them. Octavia eventually had enough and left him forever, making him even more suicidal than ever.
 
He used to have redeeming qualities but those all disappeared. Princess Celestia now considers him worse than King Sombra.