The Pyro Destroyers are members of the Pyro Vipers. They are ancient Serpentine and served Mambo V until Aspheera stole the throne using Spinjitzu (which Wu taught her as part of a deal). The Pyro Vipers eventually died out and several mummies of them found their way into museums and tombs where Aspheera used magic to awaken them as mummies under her control.
Never Trust a Human (flashback)
The Pyro Destroyers were building the Ancient Pyramid when they spot Wu and Garmadon hiding. They brought them to King Mambo V, who decided to lock them in a cell.
The ninja found several mummies of them in coffins In the Ancient Pyramid. When lava rushed into the room they were resurrected as undead mummies. The ninja fought them and managed to escape. It is unknown what happened to them after the pyramid's destruction.
They traveled with Aspheera and fought the ninja.
Legions of them attack the Monastery of Spinjitzu.
They try to enter the gate to the Hanger Bay.
- 99. "Wasted True Potential" (dream)
- 105. "Ninja vs Lava"
- 108. "Ancient History"
- 109. "Never Trust a Human" (flashback)
- 110. "Under Siege"
- 111. "The Explorers Club"
- 112. "Vengeance is Mine!"
- 128. "Awakenings" (flashback)