The flying Boulder Blaster was constructed in secret by Cole and Karlof while they were imprisoned in Chen’s underground noodle factory. Once completed, they used it to break out of the factory. The Boulder Blaster was equipped with a launcher capable of firing eight missiles and adjustable wings. Chen later stole the Boulder Blaster to escape to NINJAGO Island.

Ninja Dojo
Elemental Blade
4.5 Bricks
Inventing Gadgets