The Leader

The Leader, also known as The Lightning Alchemist is an unnamed character in Full Metal Alchemist:  Soaring Vengeance, and serves as the story's primary antagonist.  Although none of the protagonists no his name or face yet, he has shown his true identity to his subordinates as a method to build trust.  He's one of the seven Alchemist Elementals, known for his usage of Lightning Alchemy, the strongest of the seven types of elemental magic.