“If we can't wait for the mother of all Dragons, we build it.”
Jay

The Firstbourne Mech was a mechanical version of Firstbourne designed by Jay in an attempt to allow himself, Zane, and Kai to escape from the Dragon Hunters.

History

How to Build a Dragon

After recalling how he met Wu, Jay realizes that they need to "build the impossible", and comes up with the idea to make the Dragon Hunters think Firstbourne is attacking them, creating a distraction to allow himself, Kai, and Zane to escape with Cole and Wu. While Jay designs and finishes the plans, Cole and Wu sneak in as members of the Hunters to get the blueprints and the parts needed. Kai, Zane, and Jay are able to sneak all the necessary parts to Wu and Cole, and the two begin to build the mech.

After finishing the mech and while Cole is too heavy to pilot it, Wu is light enough for it to work, much to Cole's digress. Wu sets off in the night to provide the distraction, while Cole makes his way back the Dragon Hunters' camp to free the other three Ninja. Upon spotting it in the sky, the captive ninja inform the Dragon Hunters of its appearance with the guise that it is Firstbourne, saving the captive Wind Dragon the Hunters were about to feast on. Iron Baron orders them to attack "Firstbourne", and all the Hunters begin attempting to bring down the dragon. During the chaos, Cole sneaks in and frees Zane, Jay, and Kai, while Jay is astonished that his design truly did work. Iron Baron, seizing the moment, fires a vengestone bolt at the mech, tearing off its tail and making Wu lose control. However, the Hunters do not see this as the real Firstbourne appears, intent on saving it's captured children. Upon spotting Firstbourne in the sky, Jay is excited that Wu is able to make it realistic, while Kai, astonished, asks Cole if he truly built that. Cole remarks that it looked bigger in the air. However, Firstbourne attacks the camp, and Zane yells that it was the real Firstbourne upon seeing Wu in the crashed Mech near them. The five make their escape from the camp as Firstbourne demolishes it. After being attacked by Firstbourne, Iron Baron sees the remains of the mech and realizes that his prisoners have likely escaped.

As Firstbourne was destroying the camp, it is likely that the remains of the mech were destroyed inside.

Vehicles

Hero vehicles

Battle Wagon · Blade Cycle · Blue Dragon · Cliff Gordon's Yacht · Cole's Earth Mech · D.B. Express · Desert Lightning · Destiny's Bounty · Destiny's Bounty 2.0 · Destiny's Shadow · Earth Driller · ElectroMech · Fire Mech · Fire Stone Mech · Firstbourne Mech · Flying speeder · Garbage trucks · Ghost Cycle · Ghost Taker GT · Golden Mech · Jalopy · Jungle Chopper Bike · Jungle Raider · Kai Fighter · Kai's bike · Katana V11 · Katana 4x4 · Land Bounty · Lightning Offroader · Mech Jet · Ninja Nightcrawler · Nya's bike · Police cars · Proto Sam-X · Prototype X-1 · Racing bike · R.E.X. · Rock Cycle · Rock Roader · Ronin's Mech (non-canon) · Roto jet · Salvage M.E.C. · Samurai Mech · Samurai Mech 2.0 · Samurai VXL · Snowmobile · Storm Fighter · Titanium Ninja Tumbler · Tread Assault · Ultra Sonic Raider · Ultra Stealth Raider · Wu's Rickshaw · Wu's Ship · Zane's bike · Zane's Titan Mech

Villain vehicles

Anacondrai buggy · Black Bounty · Blade-Copter · Chain Cycle · Chenosaurus · Chen's Blimp · Chen's Ferry · Clouse's Earth Mech · Condrai Crusher · Destructoid · Dieselnaut · Empire Dragon · Fangpyre Robot · Fangpyre Wrecking Ball · Garmatron · Ghost ship · Golden Master's Mech · Hopper · Hover-Copter · HunterCopter · Iron Doom · Lunar rovers · Mech-enstein · Misfortune's Keep · Nindroid MechDragon · Noodle Trucks · Noodle Truck of Crime · Oni Bike · Oni Chopper · Raid Zeppelin · Rattlecopter · Security Mech · Serpentine Bus · Serpentine Train · Skulkin Mech · Sky Shark · Stone Army Mech · Stone Booster Bike · Tusk · Vermillion Invader · Vermillion Racer · Vermillion Ship · Warrior Bike

The LEGO Ninjago Movie vehicles

Destiny's Bounty · Fire Mech · Flying Jelly Subs · Garma Mecha Man · Green Ninja Mech Dragon · Ice Tank · Lightning Jet · Ninja Helicopter · Piranha Mechs · Manta Ray Bombers · Quake Mech · Shark Mech · Water Strider

Mechs


Hero mechs

Samurai Mech · Fire Mech · Golden Mech · Cole's Earth Mech · ElectroMech · Zane's Titan Mech · Salvage M.E.C. · Samurai Mech 2.0 · Firstbourne Mech · Lloyd's Titan Mech · Mech Jet · Blue Dragon · Fire Stone Mech


Villain mechs

Security Mech · Stone Army Mech · Nindroid MechDragon · Golden Master's Mech · Clouse's Earth Mech · Mech-enstein · Chenosaurus · Skulkin Mech · Iron Doom · Empire Dragon

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