Warren Russell (played by Jay R. Ferguson) is Darwyn's latest supervisor, who replaces Serxner after she is killed in Sudan. Young and inexperienced, he got the job only because his uncle is a powerful Deputy Director of the FBI, and his incompetence causes him to clash with Darwyn. His forceful nature leads him to pushing Gayle to spy on Mina and Darwyn and indirectly leads to her death.