Mokko was a gang leader of the male persuasion. He ran his operations in Mokkotown, which was located on the desert planet of Ipsidon at the dawn of the Imperial Era.
He would provide sustenance to his most productive member, and a small amount of food to the remaining members of his workforce, one of whom was Benni Baro. Nevertheless, due to his insatiable hunger, Mokko secretly hoarded the majority of the food for his personal consumption.
Following the revelation of his exploitative actions by Benni Baro, Mokko faced a confrontation from both his workforce and Clone Force 99. The confrontation reached its conclusion with Mokko's demise, as he plunged from a pathway suspended above molten ipsium. In his final moments, he tried to drag Benni down with him as Benni offered assistance. In the end, the workers banded together to rescue Benni, abandoning Mokko to his solitary fate.