MORRO THE BEST

Morro was a former Elemental Master of Wind and Master Wu's former student, who once believed he was destined to become the Green Ninja. Found by Master Wu when he was a child and trained to become a ninja as his master's first student, he became determined to prove destiny wrong after the Golden Weapons didn't choose him as the fabled savior. After leaving Wu in search of his destiny, Morro perished in the Caves of Despair while searching for the Tomb of the First Spinjitzu Master, and his spirit was banished to the Cursed Realm, as a result of his previous actions.
At the end of the Second Serpentine War, Morro had escaped from his imprisonment when Garmadon was banished to the Cursed Realm. Intending to find the Realm Crystal hidden in the First Spinjitzu Master's tomb, Morro possessed Lloyd Garmadon, as only a Spinjitzu Master could locate the tomb. He then embarked on a quest, during which he used the Allied Armor of Azure to conjure his allies from the Cursed Realm at will. After a long journey, Morro abandoned Lloyd’s body and obtained the Crystal, and freed his master in an effort to curse the Sixteen Realms. With The Preeminent in Ninjago, Morro fought Lloyd in a battle that traversed through various realms. When Nya unlocked her True Potential and incapacitated the beast, Morro was seized from one of its tentacles. Desperately, Wu attempted to save him, but Morro ultimately realized that he was beyond saving, prompting him to give Wu the Crystal before letting go of his hand, and falling into the sea and dissolving.

Months after his death, a statue of Morro was placed in the Ninjago Museum of History as part of the new Hall of Villainy exhibit. When Cole (lured by Yang) accidentally opened the Departed Realm using the Yin Blade, Morro's spirit escaped the realm and possessed the statue in the museum, resurrecting him once more. Upon hearing Yang's plan to have the other revived villains exact vengeance on their arch enemies, Morro set off to find Wu but rather than fight him, he instead told him of what was happening. Morro and Wu reunited with the ninja in the city, with the ninja heading for the Temple of Airjitzu while Morro's spirit peacefully returned to the Departed Realm of his own will after making amends with his master.

After the Merge, Morro settled in the Spectral Lands to escort deceased souls safely into the afterlife by protecting them from the Soul Suckers and honor the teachings of Master Wu. One day, Arin came to the Spectral Lands and Morro helped him to get the special healing elixir for Ras and to fight against the Soul Suckers, with which they succeeded.

Later, when Thunderfang lost a battle against the ninja, became departed, and reached the Spectral Lands, Thunderfang absorbed Morro and four Soul Suckers. After Lloyd and Arin used the Arc Dragon of Focus to permanently defeat Thunderfang, Morro's fate remains unknown.