The Pisanob originated from Aztec necromancers that were Embraced during the 16th century in order to preserve their unique traditions from extinction. Even today, the Pisanob's style of Necromancy, as well as their rituals, remain different from the main Clan.
Although most of their temple havens in the Mexican hinterlands remain secure, many outlying Pisanob havens in Mexico have been compromised. Between unchecked rampages by the Sabbat and Underworld conflicts with the resurfaced Harbingers of Skulls, the Pisanob were beleaguered even before the crippling maelstrom in the spirit world. When half their phantom servants were destroyed in an instant, the Pisanob were finally vulnerable to the vengeance of spirits who had awaited a chance since before Columbus came to the Americas.
The only reason the temple of Pochtli has survived is that the maelstrom and its aftermath caught the Pisanob's enemies as flat-footed as it did the Kindred themselves. The Harbingers of Skulls suffered the ghostly apocalypse at least as badly as the Central and South American Giovanni. As for other Pisanob, they have found themselves frequently targeted by a group of humans who claim to be driven by a higher power to reclaim the world. Numerous Pisanob have met their ends at the hands of these mortal Hunters, too, finding themselves caught between the warring sects or compromised to save another Kindred's skin.
In secret, the Pisanob fear that Gehenna has come. To answer this threat, Pochtli has revitalized Aztec sacrifice ceremonies to gather the hearts of enough Kindred to appease the things that will rise. Most Pisanob who know of this keep it a secret, because they fear retaliation from the Giovanni family that would surely destroy them.