Mad Dog

Mad Dog is a commando of the Contra force in Contra series by Konami. According to Contra 4's partially re-written chronology of Contra, Mad Dog first appeared in Operation C alongside his friend Scorpion. Take note that Mad Dog and Scorpion were originally the American names for Bill Rizer and Lance Bean, respectively. Moreover, Mad Dog's appearance was based on Bill Rizer's appearance in the arcade version of Super Contra.