So is Zanza "just another guild"? They used Zanza, Caelum and Samhain as subs to Helsing when they were taking towers.

I'd like three examples of major guilds that use the ally system for allies. Family guilds don't count.

We use subs to accommodate for the large quantity of members. So do alot of other guilds, mainly tower guilds, because we have a high influx of members who want to join. Plus, we have formed unregistered alliances with Venus Gospel and Cruxis Evolution.