LEONARD TESTAROSSA SPOILER!

Leonard Testarossa is Tessa's twin brother, a Whispered prodigy and a senior figure within Amalgam. Where Tessa uses Black Technology inside an organization that at least claims to limit its power, Leonard moves through a group willing to exploit that knowledge without the same restraint. He enters Kaname's life directly after Xia Yu Lan's failed attack, arriving with miniature Alastor machines and demonstrating that he can reach her even after she has outmaneuvered her immediate pursuer. Leonard is calm, polite and unsettlingly certain of his own position, a very different kind of threat from Gates or Gauron. His connection to Tessa also makes Amalgam personal for Mithril in a way an anonymous rival organization would not be.