Jay

Jay Walker is the Blue Ninja and the current Elemental Masterof Lightning. He was recruited by Sensei Wu to train to become a Ninja alongside Cole, Kai and Zane. The group became close friends and fought together in many battles against the Serpentine and other adversaries. Jay was also the first Ninja to master Spinjitzu and the second to unlock his True Potential.

He later helped to fight against the Stone Army, a legion of indestructible warriors led by Garmadon and The Overlord. After Lloyd defeated the Overlord and his father was redeemed, peace resumed until Pythor returned, aiding the Overlord in becoming the Golden Master and commanding the Nindroid army. The Ninja clashed with the robots, and in the end the Overlord was destroyed, but at the cost of Zane's life. The Ninja parted ways after the apparent loss of their friend.

When Lloyd attempted to get the team back together, Jay was very reluctant, but after finding that Zane was alive the Ninja journeyed to Chen's Island to compete in the Tournament of Elements. When Chen's true plans unfolded, the competitorsof the Tournament allied together and fought against Chen's army at the Corridor of Elders. With Zane back in the action, the Ninja were whole once more, as they battled an army of ghosts led by Morro who were released from the Cursed Realm. After a lengthy journey to find an ancient tomb, the team assaulted the army of apparitions at Stiix before the Cursed Realm was destroyed upon The Preeminent's destruction.

With the Cursed Realm and its inhabitants destroyed, Jay and the other Ninja became celebrities under the management of Dareth, but after a run in with Nadakhan, he became wanted by the police and learned the truth of his past. After the notorious Djinn trapped the other Ninja in his sword, Jay and Nya battled the Sky Pirates until Nya was captured and forced to marry Nadakhan. After Nya died, Jay used his last wish to reverse all the events before the encounter of Nadakhan and rekindled his relationship with Nya. On the Day of the Departed, Cole accidentally revived the Ninjas' old enemies, including Samukai, who attacked Jay and his parents. With help from Ronin, Jay fought Samukai before destroying him with electrified nunchucks. He then set off to Yang's Temple, where he witnessed Cole becoming a human once more.