Martin Proctor (died 2018) was the leader of the A.S.A..
Sometimes later, he visited Gambi and threatened him to come with him or else he would have shot innocent civilians. After taking Gambi to a hideout, he had the other agents torture him. He asked him for Black Lightning's identity to which Gambi refused to tell. Although, Gambi later escaped with the help of Jefferson, Martin finds out that Jefferson is actually Black Lightning and asked Kara Fowdy, an agent who is also Jefferson's colleague and vice principal of Garfield High School.
Martin finished operating on Khalil Payne and requested that Tobias Whale bring in Black Lightning alive as he appeared to be the vaccination they needed since he is still alive unlike the rest of the children affected by it from the '80s. Martin reacted angrily upon finding out Black Lightning is "dead", wanting Thunder killed and Black Lightning's body brought there as the experiment cannot fail. 
Proctor managed to locate Gambi's secret hideout and sent a team there to capture Thunder, needing metahuman DNA to save the original metahumans as they only have 10 hours. Thunder, Black Lightning, Jennifer Pierce, Lynn Stewart and Gambi manage to subdue the team and Proctor aborted the mission once Freeland PD became involved. The A.S.A. headquarters is attacked by Tobias, Khalil and Syonide but Proctor managed to escape with a briefcase. Arriving at the pod location of the modern-day metahumans, he is confronted by Black Lighting, Thunder, Jennifer, Lynn and Gambi. Proctor attempted to negotiate with them to give him the DNA needed to save the metahumans but Gambi determined Proctor was on a rogue mission since he never called for backup. Gambi promptly shot Proctor in order to prevent him from ever experimenting on children again. 
- "Shadow of Death: The Book of War"