The Dark Realm is a shadowy, twisted place in which evil flourishes. Here all rules are turned upside down. After his escape from exile in the Underworld, Lord Garmadon traveled here. He was mutated by the Dark Realm and gained two extra arms, and thus the ability to wield all Four Golden Weapons of Spinjitzu at once. The Dark Realm is home to frightening creatures of evil, like the Mud Monsters and the Craglings. There is a passageway to the NINJAGO world, if you dive into the crater atop the Mountain of Madness.

Ninja Dojo
Elemental Blade
4.5 Bricks
Inventing Gadgets