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“You four have merely scratched the surface of your full potential.”
Underground Library is a stub. You can help Actionpedia by expanding it. |
“This is Acidicus. He runs our library.” |
— Skales to Kai, Jay, and Cole |
The Underground Library is a library in one of the Serpentine Tunnels, inhabited by the Serpentine in the Ninjago City Sewers.
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