Name: Mad Dog
Mad Dog was a commando in the Contra force who first appeared in Contra 4.
According to Contra 4's partially re-written chronology of Contra, Mad Dog first appeared in Operation C alongside his friend Scorpion. Note: 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.
Although it is unclear whether it was Mad Dog or Scorpion in the role of the playable character, Operation C let the player control a character in all-green clothes (like Mad Dog) and slightly tan skin (like Scorpion). He wears a black head-band and has somewhat cropped, blonde hair (like Bill Rizer).
In Contra 4, Mad Dog wears dark green pants and a white bandanna. He's also the only black guy on the Contra team. In the official Contra 4 Manga, he favors wearing his bandanna in a do-rag style, and has a fondness for heavy weapons; the comic shows him repeatedly take foes down with a rocket launcher.