Ronin Ronin is a Ninjago minifigure who first appeared in " " and then " " . He is physically released in the set s 70735 Ronin R . E . X . in August 2015 , and 70592 Salvage M . E . C in summer 2016 . Ronin is a mercenary and thief who often joins whichever side pays him most . However , he considers the Ninja as his friends and has assisted them in multiple occasions . Description . Ronin wears Sensei Wu ' s straw hat in brown - red . Like a standard , non - licensed minifigure he has a yellow head . His head is printed with a face with orange eyebrows , a shaved beard , a smile , and what appears to be a lens , cybernetic eye , or eye patch . He also has a mask used in Ninjago ' s 2014 wave in brown - red . Ronin has a blue - ish green body with green militarist armor printed on it . His left arm is orange . Ronin has a sword holder on his back , where he is holds two black swords . He is armed with two black guns , which shoot gold studs . He is the first physical Ninjago character to wield guns . In the game and TV series , Ronin is often shown without his mask or hat , and has Snape ' s hairpiece in orange . Background . Shadow of Ronin . In " " it was revealed that Ronin is a mercenary who has an army of samurai goons . He was associated with Chen and was responsible for kidnapping Zane and possibly P . I . X . A . L . . Since Zane had lost his memory when he woke up on Chen ' s island , it is very likely that Ronin had used his Obsidian Glaive on Zane , and had stolen his memories . In the game , Ronin Warrior s attacked the Ninja , while they were training in the village of Spinjago . After they were defeated by the Ninja , Ronin came in a samurai disguise and attacked the village with fireworks , but was cornered . However , he then revealed the Obsidian Glaive , and stole the Ninja ' s memories , while escaping on Reks . After a failed attempt at capturing Hibiki , he attempts yet fails to keep the Ninja from their Obsidian Weapons . During Zane ' s flashback , it is revealed he is the one who stole Zane for Chen as a mercenary . Also , as Jay recovers his Obsidian Nunchucks , he reveals he has recovered the Forge of Lightning , more powerful than the Ninja ' s powers . While his goon s fail to recover the Forges of Fire and Ice , he finds the Forge of Earth . He then makes his way to the Vault of Ice , and recovers all of the Forges . At some time , he put memories of betrayal from the Ninjas in Misako ' s mind , leading to him buying time from them while he steals the Primal Fulcrom and escapes to Chen ' s Island . There , he combines the Forges and the Fulcrom to open a portal between the Cursed Realm and Ninjago ( World ) . He uses the Forge ' s power to create large elemental constructs of himself , but after a being ' s release , he escaped on Reks . Possession . The Wager . Before the Soul Archer was banished , was mentioned that Ronin owed the him a large debt . If Ronin does not repay him , Soul Archer will then take his soul to the Cursed Realm . The Scroll of Airjitzu . Ronin first appears in the TV series in " Stiix and Stones " , where he is seen stealing a scroll on Airjitzu . He was attacked by the Green Ninja possessed by Morro and Morro ' s ghosts , but managed to escape the library with the scroll . Later , the Ninja visited his pawn shop at the City of Stiix , asking him where he kept the scroll . However , Ronin refused to tell the Ninja , and informed he would give it to them for $ 450 . At night , Morro and Soul Archer visited his shop , tying the thief up and demanding for the Airjitzu scroll . At the same time , the Ninja also snuck there , trying to find the scroll . After the two groups met , they battled for the scrolls . Ronin soon discovered that his Aeroblades are capable of defeating the ghosts , and gave them to the Ninja to do battle with . Meanwhile , Ronin escaped with the scroll on Reks , but was stopped by the Soul Archer . Morro then took the scroll , learning Airjitzu and escaping from Stiix . Meanwhile , Kai was stuck on a stake , but was recued by Ronin on Reks . However , Kai was recued for a price ; his and the Ninja ' s share from Steep Wisdom . Assistant . In " The Temple on Haunted Hill " , he appears talking with Sensei Wu and Misako about the sales of the shop . Later , he meets Nya who then pays Ronin escape from her Ninja training and help the Ninja as Samurai X , her alter - ego . They arrive at the Samurai X Cave , were ghosts had taken over . Nya and Ronin tried to battle the ghosts , but lost . The ghost then turned the Samurai Mech into Mechenstien and Morro attempted to steal Reks . However , it started to rain , allowing the ghosts to flee , along with Morro . In " Peak - a - Boo " , Ronin makes fun of the Ninja ' s airjitzu skills while eating an apple at the top of the " Destiny ' s Bounty " . However , Jay makes it to the goal and steals Ronin ' s apple . In " Kingdom Come " , Ronin is seen on the " Destiny ' s Bounty " . Betrayal . In " The Crooked Path " , Ronin betrays the and Ninja attempts to steal the Sword of Sanctuary , so he can give it to the Soul Archer . He is stopped by Nya , but then fights Nya , kissing her and taking the sword . He escapes on Reks and goes back to his shop , which Morro and the ghosts took his shop over . Morro then possesses Ronin , and uses his body , to send a hologram to the Ninja , giving them the location to the Caves of Despair . Then then took the sword and mocked Ronin . However , Ronin sent the Reks to save the Ninja . Skybound . Most Wanted . In " Public Enemy Number One " , the Ninja have become the most wanted criminals . Ronin is hired by the Police Chief to capture all the Ninja . Ronin succeeds , getting " anything he wants " in return . Eventually , it was revealed that the Ninja were framed . The police and Ronin assist the Ninja once again . The Dark Island Trilogy . In The Dark Island Trilogy Ronin accompanies Misako to the Dark Island to investigate the disappearance of fisherman , only to be captured by Sky Pirates under Clouse . Despite this , Ronin succeeds in building a Salvage M . E . C . , which he later uses to help Nya and Jay fight off the Pirates and a dark matter corrupted Leviathan . He continues to fight alongside the Ninja as they face Clouse in a battle for the fate of Ninjago . Day of the Departed . In Day of the Departed , Ronin takes advantage of the festivities to head to Ed Walker and Edna Walker ' s junkyard , hoping to acquire some scrap he can use to improve his M . E . C . He winds up unintentionally coming to the aid of Jay when a revived Samukai kidnaps his parents in an effort to force Jay to surrender so Samukai can destroy him . Ronin rescues Jay ' s parents , enabling Jay to fight and defeat Samukai , and is then given a supply of scrap for his efforts , the Walkers informing him that " all [ he ] had to do was ask . " Hands of Time . The Hands of Time . Ronin helps Misako move various supplies to the Temple of Airjitzu , with Dareth " supervising " the process . After Misako finds Nya ' s Samurai X armor , Ronin likes the idea of trying to sell it to a collector , while Dareth would like to relocate it to his dojo . As the two bicker , a temporal disruption caused by the return of Acronix advances time and finds Ronin standing on top of Dareth . Misako then notes that they have moved forward in time a full minute . Scavengers . Dareth , having been robbed of his fake trophies , comes to Ronin ' s new shop to purchase a new set , only for the two to spot and battle a pair of Vermillion . They then travel to the temple to warn the ninja , and then accompany all of the Ninja but Lloyd and the absent Nya and Zane to face them in battle . Ronin employs his M . E . C . in the battle only to be defeated , and ends up with his leg broken after egging Dareth into attacking the Vermillion . Secrets Discovered . The new Samurai X briefly poses as Ronin to conceal their true identity from Nya , until Nya points out that Ronin ' s leg is broken .