Jay

Wait until you see my new invention!"
―LEGO Club Magazine November/December 2011
Jay Walker is the blue ninja of lightning minifigure released in 2011 with the Ninjago Theme. He also appeared in the Ninjago movie that premiered exclusively on Cartoon Network. He was the first of the ninjas to use spinjitzu, and he has a crush on Kai's sister, Nya. In the 2012 season it is revealed that his parents are named Ed and Edna Walker.

In LEGO Ninjago: The Movie, Jay was shown to be discovered by Sensei Wu while testing one of his inventions. He was then brought to Wu's monastery to train in the ways of Spinjitzu. He trained alongside fellow students Zane and Cole. The three later attacked another that they found in the monastary. After a fight started between the four, Wu appeared to break it up and introduced the newcomer as his fourth student, Kai. Wu then announced to the four ninjas that the search for the Four Golden Weapons was to begin.

At the Caves of Despair, location of the Scythe of Quakes, after the scythe was recovered by the ninjas, they are attacked by an army of Skullkins led by Samukai, the king of the underworld. Jay notices the enemies to be just like the training course, and after going through the motions Wu taught him, he summoned a tornado of lightning corresponding with his element. In other words: he performed spinjitzu, followed by the others. Samukai and his legion retreat, as a dragon protecting the Scythe appeared behind the ninja. In desperation, Kai uses the scythe, despite Wu's instruction not to use the weapon's power, as no mortal could handle it. A rift appears in the cave ceiling, and the ninja manage to escape. As the ninja are heading to the shurikens of ice, Wu teaches them the most powerful move in spinjitzu: the Tornado of Creation. The boat arrives, crashing into the island, and the ninja enter the frozen plains. Jay and the rest of the ninjas recovered the Shurikens of Ice. Next, At the Floating Ruins, they climb a giant nunchuck to the nunchucks of lightning, jumping down to escape the lightning dragon. The four use special inventions made by Jay, who made backpacks that spawn wings. The ninja are at such a high altitude that they are able to fly to all the way to the Forest of Tranquility, the location of the Sword of Fire. The group then go to sleep in the forest. Kai leaves while the others are asleep as he is under the impression that his sister, Nyais in the forest. Wu later leaves to follow Kai, while Jay, Zane, and Cole are still in slumber. Samukai and the army of Skullkins then arrive, steal three of the golden weapons, and tie the remaining members of the group to a tree. Jay grabs General Nuckal's sword and cuts the rope while the skullkins are not looking. The three ninjas then try to chase the Skullkins in their vehicles, but they escape to the Underworld. The ninjas then go to the Fire Templewhere Zane senses the location of the Sword of Fire. Kai and Nya then appear with the fire dragon. Jay then learned of the sacrifice that Wu made. The ninjas then retrieve their elemental dragons and travel to the underworld. While in the underworld, Jay battled the skullkins (once again) and giant spiders. He then witnessed Samukai defeat Sensei Wu and take the sword of fire from him. Samukai was then seemingly destroyed, but the combined power of the weapons allowed Lord Garmadon, Wu's evil brother, to escape from the underworld. Jay then travelled to Kai and Nya's village where he and the other ninjas were welcomed as heroes. Jay had a small moment with Nya,she tells him blue is her favorite color, and Jay replies YES!!!!!!! she also tells Kai and Jay she's happy they are back. Then they hit their golden weapons together creating an explosion.

Jay also appeared in most of the Ninjago Mini-Movies. In the first, he gave Nya a ride to the Blacksmith to pick up a few things, as she is moving in with Kai and the Ninja at the Monastery. He also took part in the dragon race between the other three in the second. He was briefly heard and seen in the third when Kruncha and Knuckal tried to steal the Golden Weapons, and was also seen flying on his dragon in the 6th.

In the Spinjitzu Smash online game, Jay appeared in three of the four campaigns. In his respective campaign, he and Nya built a balloon and journeyed to the Sky Temple to retrieve the Nunchucks of Lightning. In Zane's campaign, Jay accompanied the ninja of ice on his quest to retrieve the Shurikens of Ice. In Cole's campaign, Jay appeared as an illusion that led Cole to the cave where Carridi's daughter and the Scythe of Quakes were being held by Skullkins. Jay was only playable in his respective campaign.

Also, in the game Smash Creations, Jay says that Nya is a great kisser when Sensei Wu tells Kai that she is not just an ordinary village girl, thus it can be assumed Jay has kissed Nya before, though he could just be joking with Kai. When Kai leads the charge before the last battle, Jay says he fights for love, further implying his feelings for Nya.

In the new Ninjago mini-movie, Rise of the Snakes, his opptomism reaches its' peak with the battle of the Serpentine. After the ninjas go to Jamonicia village to investigate the report of Lord Garmadon's return, the ninjas find Lloyd Garmadon terrorizing the villagers. After leaving him to the villagers, they find the scroll about the Green Ninja (Ninjago), he is the most intruged. During the contest to decifer who it was, he lost first to Kai. After returning to Jamonicia village to investigate the Serpentine's return, he is relieved to see Nya has returned safely. Jay makes little apperance in this battle, only to say they are out of shape during the battle.

In the second premire, Home, he is annoyed by Zane when he laughs at a movie when he and Nya are crying. He and the other ninjas train to unlock the golden weapons when Zane tells them to follow him. After arriving at Lloyd Garammadon's treehouse, he finds it very cool and interesting. Nevertheless, he follows the ninjas to destroy it. When Cole in hypnotized, he tries to schock him with lightning, to no avail. When Sensei Wu un-trances him, he is devestated that the Serpentine destroyed all their video games. After they discover Destiny's Bounty, he is the first to comment on the food. He appeared to have a conection to the Green Ninja, due to his apperance with the nunchucks of lightning.