Mega Weapon

The Mega Weapon was a weapon created by Lord Garmadon when he brought the Golden Weapons to the Golden Peaks. The evil warlord utilized it in his quest of turning Ninjago into his own image.

Darkness Shall Rise
Lord Garmadon used the Golden Weapons' power to recreate the Destiny's Bounty as the Black Bounty. He used the ship to reach the Golden Peaks, where he united the Golden Weapons into the Mega Weapon.

Pirates Vs. Ninja
As the Black Bounty left the Golden Peaks, the Serpentine asked Lord Garmadon about the capabilities of the Mega Weapon. Garmadon did not know, but the discussion was halted when the Ultra Dragon flew by. As the Black Bounty flew in pursuit, Lord Garmadon tried to use the Mega Weapon to harm the Ultra Dragon. To his dismay, nothing happened, but Garmadon covered his failure by claiming that the Serpentine's poor piloting skills ruined his shot.

Before the Serpentine could question him further, Garmadon retreated to the captain's quarters and angrily wondered why his Mega Weapon failed to activate. In a fit of rage, he struck a nearby desk, opening a secret compartment containing Captain Soto's log. Upon reading it, Lord Garmadon realized that the Pirates were more competent than the Serpentine and wished to have a crew like them. Suddenly, the weapon seemed to react, glowing brightly and draining Lord Garmadon's energy.

As he tried to catch his breath, Lord Garmadon heard unfamiliar voices above the room. Up on deck, the Serpentine were arguing with none other than Captain Soto's crew. While they were arguing over the ownership of the Black Bounty, Lord Garmadon realized what had happened: the Mega Weapon could only create, not destroy, and the strain of its use meant that he could only use it once a day.

Double Trouble
Now knowing the limits of his Mega Weapon, Lord Garmadon consulted his minions on ideas for defeating the Ninja. After several poor suggestions (including recreating The Great Devourer, creating another group of pirates, and making a really big ham sandwich), he used the Mega Weapon to create the Bizarro Ninja to match the power of the real Ninja.

Ninjaball Run
When the Black Bounty began pursuing the Ninja in the Ninjaball Run, a Venomari Scout asked Lord Garmadon why he didn't use the Mega Weapon against their opponents to ensure his victory. Garmadon reminded the Serpentine that he could only use the weapon once a day, and thus intended to avoid using it unless he had no other choice. Instead, Lord Garmadon attempted to stop the Ninja with his other assets, firing at them with the ship's cannon and sending the Serpentine to attack.

However, all of Garmadon's attacks failed, and he eventually found himself neck and neck with the Ninja's Ultra Sonic Raider in the final leg of the race. Desperate to stop them from winning the money they'd need to save Dareth's dojo, the four-armed villain wished for an obstacle that the Ninja could not overcome, and the Mega Weapon created a massive chasm in the Ninja's path. The power drain left Garmadon unable to defend himself when the police caught up with him after the race, but Skales picked him up in the Serpentine Bus.

Child's Play
At the Ninjago Museum of History, Lord Garmadon used the Mega Weapon to resurrect a prehistoric creature known as the Grundle to hunt down the Ninja. The Ninja interfered, delaying the Grundle's resurrection, but also transforming themselves into children.

Wrong Place, Wrong Time
When the Ninja confronted Garmadon in The Lost City of Ouroboros, he attempted to use the Mega Weapon against them, only for the tip to be frozen by Lloyd. Lord Garmadon was forced to flee while his minions fended off the Ninja—infuriated at their continued persistence, he used the Mega Weapon to travel back in time to prevent the Ninja from ever forming and training Lloyd.

The Mega Weapon was nowhere to be seen when Garmadon was masquerading as a Skulkin, but it was back in his hands when he infiltrated his own fortress to speak with his past self. As part of their plan, Past Garmadon sent his future self to attack Past Kai in the Fire Temple, instead of using Shadows. Garmadon waited patiently for Past Kai to save his sister and retrieve the Sword of Fire, and then confronted his past nemesis with the Mega Weapon in hand.

Lord Garmadon continued to wield the Mega Weapon after the present Ninja intervened on Past Kai's behalf, gaining the upper hand despite being outnumbered and unable to use his weapon's creation powers. Unfortunately, Jay had the idea of using the Golden Weapons of the past to match the Mega Weapon, and the Ninja used their elemental powers to overload Garmadon's weapon. Pulling itself from the four-armed villain's hands, the Mega Weapon fused with the Golden Weapons of the past before flying out of the temple and exploding in the skies far above, crashing-landing into the comet Arcturus.

After the Mega Weapon's destruction in the past, the time stream returned to its previous form, and events proceeded as the Ninja remembered. However, in the process, the events caused by the Mega Weapon's time manipulation were erased from everyone's minds, save for those present during its destruction. Oddly, Lloyd appears to be the only one who does not remember the Mega Weapon.

Codename: Arcturus
During the Nindroid War, Pythor revealed that The Overlord planned to become the Golden Master by retrieving the remains of the Mega Weapon and fusing with it.

The Void
Discovering the fused remains of the Mega Weapon and Golden Weapons, Cryptor and his Nindroid forces succeeded in loading into its net, although not without accidentally destroying a Nindroid that accidentally touched the highly potent energy of the weapons. Transporting it to their rocket, the Nindroids attempted to protect their cargo from the ninja, with another Nindroid accidentally touching and being destroyed by the fused Mega Weapon during the chase. Despite the destruction of their vehicles, however, Cryptor and his forces succeeded in escaping with the fused Mega Weapon intact.

The Titanium Ninja
Taking the fused Mega Weapon to Borg Tower, Cryptor and the Overlord succeeded in melting it down and reforging it into the Golden Armor, which the latter wore and used to power himself up as the Golden Master.

Powers
The Mega Weapon is incredibly powerful due to the combined powers of all four Golden Weapons being merged into one single weapon. With this power, it can be used to virtually create anything the user desires. However, a huge amount of energy from the user is required to create something. If someone with an insufficient amount of energy attempts to use the Mega Weapon or even grab ahold of it for a few moments, they will be disintergrated into nothingness.

LEGO.com Description
''Extremely powerful force for creation made by Lord Garmadon using all four Golden Weapons of Spinjitzu. Garmadon journeyed to the Golden Peaks, birthplace of the Four Golden Weapons, in order to forge the Mega Weapon. He used it to recreate Destiny’s Bounty as the pirate ship Black Bounty and bring Captain Soto and its crew back to life. He also used it to create evil duplicates of the ninja and to revive the prehistoric Grundle. In his most ambitious effort, Garmadon used the Mega Weapon to send himself back in time so he could stop the ninja team from forming. The ninja of the past sent the Mega Weapon hurtling into space using the power of the Four Golden Weapons.''

Gallery
Megawaffe Megabroń