Known as the Mad Dog of Shimano, Goro Majima is a longtime member of the Tojo Clan criminal organization. He is a ferocious combatant, beating down his opponents with various combinations of fisticuffs, knives, baseball bats and breakdancing. He is the friend/coworker/stalker of series protagonist Kazuma Kiryu and sworn brother of Taiga Saejima.
Majima's behavior is bizarre and erratic, to put it mildly. Sometimes he's flamboyant and joyful, sometimes he's a brutal, cunning sadist. The truth is that Majima deliberately cultivated this image after deciding that being crazy was the only way he could keep himself from falling apart. Beneath it all Majima is a broken man, covering up a long chain of past traumas the only way he knows how.