The Pyro Vipers and Aspheera had tried to conquer ninjago and get the Scroll of Forbidden Spinjitzu. Aspheera befriended Wu and Garmadon, but were betrayed by the elder of the two brothers and entombed in the Ancient Pyramid.
Zane saw a vision of them marching in his vision.
Zane saw them in another vision.
The ninja entered the pyramid and released the Aspheera who caused the pyramid and the Fire Fangs.
The Fire Fangs go on a rampage through Ninjago City.
The ninja come across three sarcophagi of two Pyro Whippers and a Pyro Destroyer. Lava enters the room which empowers them and releases them.
The news is under attack by fire fangs and Aspheera talks on the news and sees an advertisment for the Scroll of Forbidden Spinjitzu at the Museum.
- The Greek root "Pyro" means "Fire."
- They are the third Serpentine group to be a villainous faction, the first being the Serpentine themselves in Rise of the Snakes and the Vermillion in The Hands of Time.
- The only way to recover their powers is with something related to fire.