In 158 AG, the Agni Kai Triad broke into the Sato estate. During the robbery, one of the members killed Yasuko, Hiroshi Sato's wife, an event that caused Hiroshi to develop a deep hatred for all benders and eventually join the Equalists. When Mako and Korra approached Skoochy in Central City Station for information regarding Bolin's whereabouts, he mentioned that all the gangs, including the Agni Kai Triad, the Triple Threats, and the Red Monsoons, were recruiting extra muscle for something big.