Dr. Eugene Porter is a fictional character from the comic book series The Walking Dead and is portrayed by Josh McDermitt beginning in the fourth season of the American television series of the same name. In both mediums he claims to be a scientist who knows the cure to the zombie plague and is being escorted to Washington D.C. by Sgt. Abraham Ford and Rosita Espinosa, and encounter Rick Grimes and his group and recruit them to assist their mission.