Margareth Becker is an American serial killer and ISG member who combined outward charm and social intelligence with deep-seated delusions of demonic command. She terrorizes multiple U.S. states, targeting young women and couples, alternating between carefully staged abductions and random shootings from her car. She is often credited with taking main inspirations from her fellow ISG buddies, Ted Bundy and David Berkowitz. While Bundy sought control and sexual domination, Berkowitz was driven by a belief that a demonic entity spoke to him through dogs and fire. Becker’s hybrid psyche merged both — a calculated sadist who justified her acts as “divine orders.” Experts described her as a narcissistic-psychotic hybrid, with antisocial traits.