A legendary ancient serpent beast that can grow forever as long as it consumes. It was so powerful that not only can it not be killed, but it also can devour and consume all of Ninjago. Its venom can change the purest of souls and make them evil. It would have consumed Ninjago had it not been for the legendary flutes of the people of Ninjago. Then the good people of Ninjago used their sacred flutes to control the Serpentine, they cast them in their tombs, and locked them up. The Great Devourer was controlled by the flute as well. It then sleeps in the lost City of Ouroboros. It has slept for hundreds of years since the Serpentine once ruled Ninjago. Since the tombs are condemned, they forgot the flute's wisdom. Years later since, Lloyd Garmadon released the Hypnobrai, to fight the ninja for humiliating him, which caused the release of all the tombs of the Serpentine, most notably the Anacondrai, of which Pythor P. Chumsworth is the last living member of the Anacondrai and declares himself to be destined to reawaken The Great Devourer. But the only way to awake it is to find all four silver Fang Blades which are used to awake the beast. Lord Garmadon was bitten by the Great Devourer as a child, changed by its terrible venom, when the Devourer was a child itself, causing Garmadon to turn evil. It could only be stopped by the Ancient Serpentine Flute. Unluckily, for the ninja and all of Ninjago the last flute has been stolen by Pythor. Now the ninja need the help of the Green Ninja, the only force in all of Ninjago that can defeat Lord Garmadon and The Great Devourer. In the TV series, Lord Garmadon defeats it.