The Azteca's Nortenos? | Grand Theft Auto San Andreas

Varrios Los Aztecas
The Varrios Los Aztecas have been around since the early 1980s, and are one of the more recently formed gangs in Los Santos. Much of their origins and past history is unknown. Likewise, the origins and past of their rivalry with the other Los Santos gangs - particularly the Los Santos Vagos - is also unknown, though it obviously began sometime between 1980 and 1992. It is highly likely that they evolved from the El Corona neighborhood, and their presence grew with the increase of Mexican and other Hispanic/Latino immigration to the area, correlating with the relative deprivation of the area compared to the rest of the city.

Events of GTA San Andreas
The Varrios Los Aztecas are not a major part of the story, but are first mentioned during Sweet & Kendl in which Sweet refers to Kendl's relationship with a high-ranking Azteca member - Cesar Vialpando, stating "you know we beefing". Because of this, the gang acts as a fulcrum point between the relationship of Sweet and his sister due to Cesar being Kendl's boyfriend - much to the dismay of Sweet because to Cesar's involvement with the VLA.