Yang

Master Kodokuna Yang was the creator of Airjitzu, and later a spirit trapped in the Temple on Haunted Hill. After inventing the martial art, Yang taught it to his students, while also collecting relics such as the Yin Blade. Yang yearned to be immortal so he and his work wouldn't be forgotten, so he tried making himself immortal using the Yin Blade. However, his powers backfired - transforming him and his students into ghosts and sapped his surroundings of life, turning his temple into a decrepit state. For many years, Yang and his students haunted the temple.

When the Ninja were fighting Morro, they traveled to Yang's temple to get a scroll and master Airjitzu. As they made their way through the building, they were tormented by Yang before retrieving the scroll. During their escape, Cole dropped the scroll and went to retrieve it, but was turned into a ghost after not leaving the temple in time. Some time later, when Nadakhan began rebuilding his home realm, Yang's temple was lifted into the sky and cleansed with water - forcing him and his students to flee. After Jay made his final wish, recent events were undone, but somehow the temple remained floating in the sky. At this point, Yang and his students returned to the temple.

A rare eclipse was set to occur on the Day of the Departed, so Yang set his master plan in motion. He manipulated Cole into bringing him the Yin Blade, which he intended to use in opening the Rift of Return and resurrecting himself. Cole accidentally opened the Departed Realm and revived the Ninjas' old enemies, who Yang ordered to kill the Ninja and take their place among the living, though he was only using them as a distraction. Using the Yin Blade, Yang opened the Rift of Return while Cole fought his students, while the revived villains were defeated by the Ninja. After extensively fighting his students, Cole battled Yang on the roof of his temple before destroying the Yin Blade, which broke the spells over the rift and the students, allowing them to become mortal again. Yang admitted to Cole of his desire to live forever, and the two made amends, ascending to the rift. Yet Yang returned to his temple, knowing someone had to stay and hold power over it. Cole crossed through the rift, which purified Yang's temple and brought life to the grounds again.

Early life
At an unknown point in time, Yang went on a quest to master all martial arts, learning Spinjitzu, Fang Kwon Do, and many others in his journey. From his accumulated knowledge, Yang invented the art of Airjitzu. However, growing old at the time he created Airjitzu, he decided to preserve his work by passing it down to his students, which he had gathered shortly after he created the martial art. He was an excellent master who even had a statue of himself built before the Temple of Airjitzu in his honor. However, his pupils were afraid of him because of his strict teachings, causing him to become worried he would not be remembered as a good sensei, or remembered at all.

He later discovered the forbidden Yin Blade and planned to use its dark magic to attain immortality and live forever as the greatest master of all time. After testing the Blade's magic on several trees, Yang decides performing the ritual atop his temple only to accidently curse the entire Temple of Airjitzu, transforming himself and his students into Ghosts to haunt the temple for the rest of time. As master of the haunted temple, he eventually grew mad and enslaved his students, binding their wills to his power.

Ghost Story
Yang was mentioned by Misako to be the creator of Airjitzu.

The Temple on Haunted Hill
During the Ninjas' stay at Yang's temple to locate the Scroll of Airjitzu, he threw many obstacles (the fears of the Ninja) at them to get them stuck in the temple so they would turn into ghosts when the morning comes. Later, it's revealed that he merely tested the Ninja to see if they were worthy of obtaining the Airjitzu scroll. However, as the morning came and the curse on Yang's temple started to take effect on the Ninja, the ghosts of Yang's students showed themselves, revealing that Yang had chained them up, as they were imprisoned by Yang. The Ninja then quickly fled to the entrance, not wanting to suffer the same fate as Yang's students. They manage to reach the entrance, but Cole dropped the scroll mid-way and thus had to go back in to retrieve it, which caused him to turn into a ghost. Yang's laugh echoed from the inside the temple as the Ninja stood outside, staring at Cole sadly after his transformation into a ghost.

Wishmasters
After his temple was torn out of Ninjago by the Sky Pirates to help reconstruct Djinjago in the sky, he left his temple to go angrily confront Nadakhan, claiming domain. However, the latter, unimpressed, promptly ordered Dogshank to shoot water at him and his students, forcing them to abandon the temple.

The Way Back
Yang's temple was strangely left still floating in the sky despite Jay's final wish. This may be due to Yang having "power" over his temple, being able to do whatever he desired to do with it.

Day of the Departed
Yang first appears as he confronts Cole through a painting, telling him to "close the circle". Cole later steals the Yin Blade and flies up to Yang's temple to settle the score, only to backfire as Yang's students capture Cole and lock him up.

Yang reveals his plan was to trick Cole into unleashing the souls of the Ninjas' former enemies, where they will distract the separate remaining ninja while the ghostly sensei opens a rift to the Departed Realm and becomes mortal again. Cole escapes and fights Yang for awhile until the Ninja defeat their villains and come to help him. Cole unleashes enough power to shatter the Yin Blade and freeing Yang's students of his control. As the rift begins to close, the formerly imprisoned pupils went through the rift and become mortal while Yang admits defeat. Yang reveals he wanted to be immortal so he would not be forgotten and Cole reminds him as the creator of Airjitzu that he would not be forgotten by him. Cole flies towards the rift but Yang tells him one of them must remain behind as the Temple's master, and throws Cole into the disappearing rift.

Afterwards, Cole becomes human again and he and the Ninja move into the Temple, while Yang wanders the halls, no longer a sadistic monster but a kind sensei, only Cole being aware of his presence.

Appearances
{{Scroll|
 * 70590 Airjitzu Battle Grounds
 * 70595 Ultra Stealth Raider
 * 70751 Temple of Airjitzu (Statue)

Season 5: Possession

 * 48. "The Temple on Haunted Hill"

Season 6: Skybound

 * 61. "Wishmasters"

Day of the Departed
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 * "Day of the Departed"