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Villain Overview

I see the evil in this world, ronin. I am the definition of justice!
~ Jei while fighting Miyamoto Usaji.

Jei, also known as Jei-san or the "Blade of the Gods", is a recurring antagonist in the Usagi Yojimbo comic series. He a wolf samurai who believes that he is an emissary of the Gods sent to purge the world of evil souls, however, he sees everyone around him as a sinner and therefor kills anyone who gets his attention. He is the arch-nemesis of Miyamoto Usagi.

He appeared as one of the main antagonists of the fifth and final season of the 2012 Tales of the Teenage Mutant Ninja Turtles series, serving as the main antagonist of the Usagi Yojimbo arc.

In the 2012 Teenage Mutant Ninja Turtles series, he was voiced by Keone Young, who also portrayed as Silas Sinister from Return to Halloween, voiced as Katarou and Uehara Daizo from Teen Titans.


Usagi Yojimbo

In the comic series Jei is a major recurring villain first appearing in the tenth issue. He was meant to be a one-shot villain, but he later reappears with a little girl named Keiko.

Teenage Mutant Ninja Turtles


In the beginning of the episode, Jei is shown fighting with Miyamoto Usagi, who is enraged at him for murdering an innocent family. However, Jei claims that the family was infected with evil and that it is his job to purge the world of evil souls. As they continue to fight, Jei introduces himself as "the blade of the Gods" and prepares to kill Usagi, however, he is struck by a bolt of lighting and destroyed, although his soul (in the form of black smoke) survives.

Later, Jei, with a new body, watches Usagi using a bowl of water and, upon seeing his enemy with Kintaro, a holy child destined to have great powers, he summons four warriors to destroy Usagi. However, to his confusion, the warriors Jei summons end up being the Ninja Turtles. Deciding to use the Turtles, Jei poses as an injured old man and claims that Usagi had attacked him, getting close enough to brainwash the Turtles into becoming his soldiers. Jei, with the Turtles under his control, then tells them to kill Miyamoto Usagi, but leave Kintaro unharmed.

Osoroshi no Tabi

Towards the end of the episode, Leonardo spots Jei while watching over camp. Leonardo and his brothers try to attack Jei, but he ends up killing them off one by one; impaling Michelangelo, throwing Raphael off the cliff and crushing Donatello with telekinesis. With his brothers slain, Leonardo attempts to defeat Jei himself, only to be thrown to the ground with Jei preparing to stab him. Before this can happen, Raphael wakes Leonardo up, revealing that the entire experience had been a dream. Donatello then states that all of them had the same dream, and that they woke up when Jei killed them. While the Turtles, Usagi and Kintaro wonder what Jei is doing, Jei, watching from his bowl of water, laughs and states that they are the pawns of the Gods.

Kagayakei! Kintaro

While the Turtles, Usagi and Kintaro are walking up the mountain, Michelangelo states that he spotted Jei standing on a mountain top. While Raphael and Donatello don't believe him, they then all see the clouds forming Jei's face and laughing at them. The Turtles then hear Jei's voice and are attacked by multiple cat ninjas.

Upon reaching the Mountain Temple, Jei confronts the Turtles and orders his minion Sumo Kuma to destroy Usagi, yet leave the Turtles alive. Jei then fights the Turtles and outclasses them, then stating that they have proven themselves worthy. Jei then reveals that he never lost his control over the Turtles and was waiting for the right moment to take control of them again. Jei then has the Turtles beat down on Usagi, however, before he is killed, Kintaro unlocks his powers and single handedly defeats both the Turtles and Sumo Kuma.

Before he can help Usagi, Jei traps Kintaro in a magic resisting chain, and reveals that his real plan was to get the Turtles and Usagi to teach Kintaro humility and compassion, making him unlock his powers, so his spirit could posses him. Jei immediately begins preforming the ritual to transport his soul into Kintaro's body, however, the Turtles, having had the evil knocked out of them by Kintaro, disrupt the ritual and force Jei's soul back into his body by impaling him with Leonardo's sword. Jei fights the Turtles again and defeats them, slamming Kintaro into the ground in the process, enraging Usagi and getting him to violently attack Jei. Despite Usagi's efforts, Jei defeats him and prepares to strike a fatal blow, only for Kintaro to bite his wrist, giving Usagi the opportunity to pull Leonardo's sword with Jei's soul intact out of his body. Jei is then knocked off the bridge and falls to his death.

Powers and Abilities

  • Combat Proficiency: Jei is an immensely capable and powerful warrior. In one particular instance instance, Jei slaughtered an entire group of heavily armed ronin warriors without any weapons at all. Jei is also notable for being so tough that even his arch-enemy Miyamoto Usagi has a hard time keeping up with him, resulting in Jei having nearly killing him on multiple occasions and encounters.
  • Immortality: His most notable ability, Jei is shown to be immortal on various occasions, having been struck by lightning, fallen off a cliff and even sliced in half by a holy blade, yet still managing to return in one form or another.
  • Possession: As shown on different occasions, if he is killed, Jei's spirit can posses another person's body and use them to continue his legacy, although this possession can be undone by an exorcism.
  • Consecration: Jei can turn any weapon he collects or touches black to match his soul. After doing this to a weapon, Jei can use said weapon to steal the soul of anyone he strikes.
  • Mind Control: In the 2012 Teenage Mutant Ninja Turtles series exclusively, Jei has the ability to brainwash anyone he gets close to into becoming his loyal soldiers, although, if he desires them to complete a task, he must tell them it before brainwashing them. Additionally, he can release control over anyone he has brainwashed and regain control should he feel the need to.


  • Jei has appeared in over 47 Usagi Yojimbo stories, making him the series' most recurring antagonist.
    • Additionally, Jei has made more crossover appearances than any other Usagi Yojimbo villain, appearing in both IDW's TMNT comics and the 2012 Nickelodeon series.
    • Because of this, Jei is more of a nemesis to Usagi than Lord Hikiji, the main antagonist overall.
  • Throughout the Usagi Yojimbo series, it is never made clear whether or not Jei is actually telling the truth about being an emissary of the Gods, albeit a corrupt one, although is also suggested that he is really a Demon who possessed a priest (explaining why he can posses others if he is killed) or is simply an insane warrior.
  • In the 2012 series, Jei's "death" by lightning implies that, ironically, the Gods themselves view him as an evil soul and tried to kill him.
  • Jei was meant to be a one-shot character but he was brought back again for later issues due to his popularity.
  • Jei is one of the few villains on the 2012 TMNT show who killed people onscreen, since he killed Raph, Mickey and Donnie in a dream. The only other villains with such distinctions are the Triceratons (who destroyed the Earth), Newtralizer (who electrocuted Mickey and ate a kraang), Creep (who drained the mutagen from Raphael), Za-Naron (who vaporized Donnie), Shredder (who killed Tang Shen and Splinter) and Kavaxas (who drained the souls of Hattori Tatsu and the Hammer, as well as killed some of Don Viszioso's other men). Like the rest of the villains, barring Kavaxas, Newtralizer and Shredder, the kills weren't permanent.


            Usagi-YoJimbo-Logo by Stan Sakai.png Villains

Assassins & Criminals
Ichiro | Kenichi | Hatsu | Ichinobei | Icho | Eizo | Shi

Daimyōs & Officials
Lord Hikiji | Lord Hebi | Lord Tamakuro | Counselor Wakame | Counselor Tadon | Counselor Kagihana | Oda | Counselor Odo | Masuda

Samurai & Ronin
Buichi Toda | Gunichi | Higashimori | Torame | Takohana | Nakamura Koji | Noriko Ame | General Fujii

Neko Ninja Clan | Members: Shingen | Gunji | Komori Ninja Clan| Mogura Ninja Clan

Supernatural Forces
Jei | Yokai | Ocho | Goyemon | Kuzunoha

           Tmnt-51e57cb534568.png Villains

Shredder (Mirage, Archie, IDW, Mirage Comics, Raphael, Doctor Shreddarius & Lady Shredder) | Foot Clan | Foot Elite | Karai | Ch'rell | Baxter Stockman (Archie & IDW) | Krang (Archie & IDW) | Hun | Purple Dragons | Adolf Hitler | Ninjara | Slash | Leatherhead | Triceratons | Commander Mozar | Zanramon | Shredder Clones | Tokka & Rahzar | Alopex | Kitsune | Koya | Bludgeon | Rat King | Agent Bishop | Bebop and Rocksteady | Savanti Romero | Skonk | Darius Dun | Tatsu | Master Sliver | General Tragg | Dragon | Null (IDW Version) | Maligna (IDW Version) | Craniac | Armaggon | Old Hob | Master Traquer | Johnny Lee Raeburn

1987 TV series: Shredder | Bebop & Rocksteady | Baxter Stockman | Krang | Rat King | Lord Dregg | Antrax | Barney Stockman | Don Turtelli | General Tragg | Groundchuck & Dirtbag | Krangazoids
1997 TV series: Foot Clan (Shredder) | The Rank (Dragon Lord | Wick | Dr. Quease | Good Dragon | Rank Lieutenant | Clone Turtles) | Simon Bonesteel | Silver | Monkey Thief Mick and Monkey Thief Dick | VamMi | Bing | Chi Chu | Heavy Duke
2003 TV series: Utrom Shredder (Future Self, Tengu Shredder & Cyber Shredder) | Karai | Hun | Baxter Stockman | Agent Bishop | Rat King | Drako | Ultimate Ninja | Darius Dun | Sh'Okanabo | Dark Turtles | Viral | Torbin Zixx | General Blanque | Zanramon | Commander Mozar | Lonae | Dr. Chaplin | Mr. Touch and Mr. Go | Abigail Finn | Parker | Harry Parker | Kluh | Ammag | Levram Wizard | Dragon Face | Johnny | Two Ton | Yukio Mashimi | Moriah | Weasel | Master Sliver | Savanti Romero | Skonk | Triple Threat | Nano | Mephos | Boss Zukko | High Mage | Lord Hebi | The Brotherhood (Councilor) | Garbageman | Necro Monster
2012 TV series: Foot Clan (Shredder, Karai, Tiger Claw, Rahzar, Fishface, Bebop, Rocksteady, Baxter Stockman, Antrax, Shredder Mutants/Mega Shredder, Hattori Tatsu, Chrome Dome & Koga Takuza) | The Kraang (Kraang Prime & Kraang Subprime) | Triceraton Empire (Emperor Zanmoran & Captain Mozar) | Lord Dregg | Armaggon | Savanti Romero | Newtralizer | Slash | Kavaxas | Rat King | Purple Dragons (Hun & Fong) | Don Vizioso | Snakeweed | Spider Bytez | Overmind | Za-Naron | Dracula | Justin | Mutagen Man | Pizza Face | Dream Beavers | Speed Demon | Squirrelanoids | Chimera | Spy-Roach | Maximus Kong | Verminator Rex | Jei | Wyrm
Rise of the TMNT: Baron Draxum | Albearto | Baxter Stockboy | Big Mama | Meat Sweats | Hypno-Potamus | Foot Brute | Foot Lieutenant | Warren Stone | Repo Mantis | Evil League of Mutants | Shredder | Krang (Rise of the TMNT)

TMNT 1 & 2: Foot Clan (Shredder, Danny Tatsu, Tokka and Rahzar)
TMNT 3: Walker | Lord Norinaga
TMNT (2007): Stone Generals (Aguila, Gato, Mono & Serpiente) | Foot Clan (Karai)
TMNT (2014): Foot Clan (Shredder, Eric Sacks, Karai & Baxter Stockman)
TMNT: Out of the Shadows: Krang | Foot Clan (Shredder, Karai, Baxter Stockman, Bebop and Rocksteady)
Batman vs. TMNT: Foot Clan (Shredder & Baxter Stockman) | League of Assassins (Ra's al Ghul, Ubu & Talia al Ghul) | Joker | Harley Quinn | Scarecrow | Mr. Freeze | Poison Ivy | Bane | Two-Face | Penguin

Video Games
NES Platformer: Shredder | Mechaturtle
TMNT II: The Arcade Game: Shogun | Tora
TMNT 2: Battle Nexus: Utrom Shredder
TMNT 3: Mutant Nightmare: Utrom Shredder
TMNT: Mutants in Manhatten: Krang | Shredder