In his characterisation, he is a bloodthirsty gangster and the right-hand man of his notorious drug lord Tama Riyadi who plays a large role in the latter's criminal operation via drug manufacturing as well as renting out rooms to criminals. Unlike most of Tama's henchmen, however, Mad Dog specifically prefers to use melee combat against his enemies due to being an uncontrollable yet powerful combatant and ruthless fighter. After his death, he was resurrected by a reaper, and rebuilt himself as a morally gray vigilante who takes justice into his own matters.