- "It is the snake that took my brother away from me"
- ―Wu describing his history with the beast.
The Great Devourer was a monstrous serpent that terrorized Ninjago for centuries before its eventual destruction.
In its infant state it resembled a small electric green snake with glowing red eyes. In its adult form it was covered in dark green scales with glowing purple eyes. It had a frill around its head similar to some earth lizard's and its tail ended in a bony stinger it would use to crush and jab prey.