Morro Morro is a minifigure from Ninjago theme that was r season five . He was a former student of Sensei Wu and the Elemental Master of Wind . Description . Morro ' s robed version has Severus Snape ' s hair , with a green streak dyed into it in the show . He has a transparent green face with a black half mask on it . His black cape is ragged . He has a dark green torso , similar to the original ninja Gi and with a ghost Golden Ninja emblem . His legs are transparent green and have a belt on them . Background . The Master of Wind . When Morro was a boy , he was homeless and ate food out of dumpsters . One day , he tried finding food in Sensei Wu ' s dumpster . However , Wu found him and gave him food from his monastery . Wu then trained Morro to become a ninja , after seeing his wind powers and realizing he was descended from one of the Elemental Masters . Wu assumed that he was destined to become the Green Ninja , a powerful warrior destined to defeat the Dark Lord . The Wind Master was obsessed by the title and for his final challenge , he needed to step near the Golden Weapons . If the weapons reacted with a green aura , it would confirm he is the Green Ninja . However , the Golden Weapons did not . Morro was then angry as he escaped from the monastery and fought the Grundle to prove the position . After being rescued by Sensei Wu , Morro informed him that he will find the tomb of the First Spinjitzu Master , what Wu could not , to prove he really is the Green Ninja . He was never seen afterwards and he ' s soul was banished to the cursed realm since he died . The Return . In " The Corridor of Elders " , Garmadon sacrifices himself to the Cursed Realm , releasing the spirits of the Anacondrai generals . However , a dark cloud also appeared from the sky and headed into the screen , with the ghost of the Wind Master screaming " " Morro ! " " . Possession . In " Winds of Change " , Morro possesses the Green Ninja and fights his former master and the ninja . During the Ninja ' s escape , he pursues him using the Morro Dragon . In " Ghost Story " , The ninja still make their escape from Morro . The Morro dragon makes a blasted hole in the Destiny ' s Bounty 2 . 0 sending Kai out of the ship . Luckily Zane and Sensei Wu manage to rescue him , although they lost Sensei Wu ' s staff . Morro rushes to get the staff and manages to get it which gives him the opportunity to see the ninja ' s vessel hurdling down from the sky about to crash . At Yang Tavern , he summons Wrayth back into Ninjago and sends him to defeat the Ninja . In " Stiix and Stones " , Morro begins searching for the Scroll of Airjitzu ; he traces it to the City on Water which is specifically located at Ronin ' s location . He summons Soul Archer to get to the scroll . Both of them later hold Ronin hostage , but the ninja also came for the same thing . Morro then summons more of his Ghost Warriors to attack them . Ronin manages to get free by one of the Aeroblade ' s tips touching the rope which cut it . Ronin then finds the chance to escape and Morro and the Ninja chase after the scroll . Later in the pursuit , Morro manages to get the scroll and escapes with it leaving the ninja chasing after him . The ninja slowly get divided one by one leaving Kai the last one to chase Morro . Although , Morro was at a distance where he can ' t be reached and unlocks the technique of Airjitzu and escapes on his dragon leaving the Ninja helpless . In " The Temple on Haunted Hill " , Morro heads to a unknown location about to attack Samurai X ' s Cave . He summons Bansha , Ghoultar , and Soul Archer to help him on the mission . When Nya and Ronin arrive at Nya ' s base , they find out that Morro and the Ghost Generals have somehow made it to the cave first . The ghosts patrol the cave to make sure no one entered the cave . Nya then goes on attack and summons her mech ; Morro sends out his generals to attack the mech . Later , Nya shoots out a sticky bomb on Morro which turns out to be the Allied Armor of Azure . Outraged , Morro sends out his ghosts to hold the mech down . The ghosts manage to ( although Nya manages to escape ) get the mech and transform it into the Mech - Enstein . Ronin and Nya manages to escape from being sliced by the mech . Although when Ronin was close to the mech , the Ghosts trap them . Then Nya used her power of summoning rain to ward off the ghosts making them retreat . Morro was the only ghost not to be effected by the rain . An illusion of Morro was seen in Sensei Yang ' s Haunted Temple who lured them to the attic of the temple where he was revealed to be Sensei Yang in disguise . In " Peak - a - Boo " , Morro and his ghost army travel to a snowy peak where the portal to Cloud Kingdom is . Morro attempts to get to the top , but was countlessly delayed by the ninja . When Morro reached the top of the peak , he saw the ninja get to the portal first by using their Airjitzu . Return . In " Day of the Departed " , Morro ' s spirit returned and animated a mannequin of him in the Ninjago Museum of History ' s new Hall of Villains exhibit , and he found himself joined by the similarly revived Samukai , General Kozu , General Cryptor , and Master Chen . Sensei Yang , whose magic and trickery of Cole had enabled their return , told the group that their new weapons were Departed Blades that could be used to dispatch one of their still - living foes so that they could remain in Ninjago rather than returning to the Departed Realm . Morro ' s chosen " target " was Wu , as he felt they had " left things unfinished . " In reality Morro no longer harbored a grudge against his teacher , but warned him of Yang ' s plan and then traveled with him to inform the Ninja after they had defeated their respective enemies , including Pythor . As they then left to aid Cole in his confrontation with Yang , Morro and Wu bid each other an amiable farewell , with Morro ' s spirit returning to the Departed Realm while his mannequin body was restored to its original state in the Hall of Villainy . Despite this more pleasant parting , his failure with Morro continued to weigh on Wu , who later envisioned Morro during a nightmare alongside others whom he felt he had failed over the course of his life .