Long ago - very
long ago - a single small fragment of an Eldritch Abomination
fell to Earth, wiping out the large saurian creatures that dominated the planet at that time. It existed as a mindless evil for millions of years until a brave king attempted to destroy it: the attempt to destroy it instead gave it consciousness. It became Aku, a being of pure darkness and evil. When the samurai who would later be called Jack came to fight him, Aku hurled him into the future as a last-ditch effort to survive. In the future, Aku rules the world, and devotes a lot
of effort to finishing Jack once and for all.
Voiced by: Jennifer Martin
One of Aku's aliases, just one of several forms which Aku assumed in order to travel closely with Jack while on a desert quest to find a jewel.
- Foreshadowing: There are many instances in that episode of Ikra's true identity. When the shaman senses the 'ultimate evil', his last line said to Jack, "You don't understand!" After Jack and Ikra escape from Aku's robots, the robots simply stop their chase and close their eyes with satisfaction, awaring of a trickery. Then, a mouse feeds food from Jack, the mouse is scared of Ikra and digs itself to run away. There is a height difference that Ikra is slightly taller than Jack. When the jewel tests Jack and Ikra's hearts, it found out that Ikra is pure evil. The guardian mainly tries to fire its blast to Ikra (besides Jack not wanting to fight). Near the end, Ikra can fly and becoming a giant to defeat the jewel guardian.
Another one of Aku's aliases where he wants Jack to find the Gems of Cronus so that he can revive the Titan.
The Black Mass
Only appearing in 'Birth of Evil', it is the source of all evil. Before it can consume the universe, three deities (Odin, Ra, and Vishnu) arrive to exterminate this great evil. Before it was completely destroyed, a fragment of it escaped and crashed forcefully on Earth in 65,000,000 BC. This is the original incarnation of Aku.
The Canine Archaeologists
Three anthropomorphic dogs are dedicated to studying legends that their ancestors were once animals. They convince the samurai to save their land from a coming beetle droid invasion. Their names are Sir Dreyfuss Alexander (Bulldog), Sir Angus McDuffy (Scottish Terrier), and Sir Colin Bartholomew Montgomery Rothchild III (Dachsund).
- Nice Guy: They're all very friendly, helpful and polite.
- Non-Action Guy: Unlike the Tribe, the dog-people don't get trained in self-defense. However, they do everything they can to sculpt the battlefield and provide Jack with the armor, steed and additional weapons he needs to triumph. It's just barely enough.
A race from a peaceful, utopian society who were conquered and enslaved by the Critchellites, using the power of the Black Sphere.
- And I Must Scream: The Black Sphere forces the Woolies into walking like animals and preventing them from speaking.
- Made a Slave: Their entire race was enslaved
- Space Jews: They even wear yarmulke-like hats in the flashback to their golden age.
- Took a Level in Badass: After being released by Jack, they stomped the Chritchellites easily.
A race of diminutive conquerors who enslaved the Woolies and took over their civilization, claiming it as their own.
- A Nazi by Any Other Name
- Faux Affably Evil: They seemed like very nice guys, inviting Jack to dinner and such, but when Jack found out that the Woolies were enslaving The Woolies, they turned out to be rather cruel and evil, and so they fought against Jack and the Woolies but were defeated.
- Kick the Dog: They're treatment of The Woolies.
- Laser-Guided Karma: Once the Black Sphere is destroyed, their weapons become useless, and the Woolies use their superior size to drive them off.
- Sadist: They tortured the Woolies, as well as enslaving and ordering them around.
- Shock and Awe: They use electrified spears as weapons (and encouragement to their slaves.)
A tribe of technology experts who were enslaved by Aku and forced to design and build his robotic forces. They've been constructing a secret escape rocket when Jack accidentally leads Aku's forces to their hideout. Jack promises to help protect the group, and in return, they promise to try and help Jack return to his own time.
The Three Blind Archers
Three incredibly skilled archers who guard a magical well at the top of an old tower.
- Annoying Arrows: Subverted. These are some serious, robot-puncturing, tank-demolishing arrows.
- Be Careful What You Wish For: The archers are actually three wanderers who made a wish to the Spirit of the Well to become "the greatest of warriors". The Spirit granted the wish, but in the process bound them to its will as mindless, sightless guardians.
- Bottomless Magazines: The three of them can fire hundreds of arrows in seconds, and never run out. (They don't carry quivers either, so in all likelihood, their bows magically create arrows.)
- Handicapped Badass: The three archers are blind, but still wipe out an entire army with no problem.
- Super Hearing: The Archers have incredibly sensitive, sonar-like hearing that gives them astonishingly accurate aim despite being completely blind. Their hearing is so acute they were able to fire arrows through Jack's sleeves just by listening to them gently flapping in the wind.
Weary of those worthless bounty hunters, Aku created a dark version of the samurai in an attempt to finish Jack. Mad Jack is defeated when Jack meditates to seal him off, since he existed only as a manifestation of Jack's negative emotions.
- An Aesop: Jack does much better at containing his anger after the Mad Jack incident.
- Enemy Without: He's a manifestation of Jack's negative emotions.
- Evil Counterpart: Take a guess.
- Hair-Trigger Temper: Since he was born of regular Jack losing his temper.
- Samurai: Physically, at any rate, although he has none of the discipline of bushido.
- Sheathe Your Sword: How Jack ends up defeating him.
- Jerk Ass: Possesses none of Jack's nobility or manners.
An alien tribe who live in a floating city. Their city is menaced by Aku, who demands a simple price for sparing them...
The Lava Monster
A viking warrior whose kingdom was destroyed by Aku a millennium ago. Instead of killing him, Aku imprisoned him in solid crystal and buried him inside a mountain to deny him an honorable death. Over the centuries, he learned to shape the rock around his prison and formed a giant stone body. Now he lures other warriors to his mountain, seeking one strong enough to defeat him in honorable battle and grant him entry into Valhalla.
- Death Seeker: But only by honorable defeat in combat.
- Determinator: He was imprisoned in solid crystal and buried inside a mountain by Aku. Over the centuries, he learned to shape the rock around his prison through sheer willpower.
- Duel to the Death: The only way to be free of his curse is to lose one.
- I Die Free: His ultimate goal. Jack grants it to him.
- Lightning Bruiser: He's a stone giant who's quick enough to keep up with Jack in a swordfight.
- Worthy Opponent: Sets up a Death Course to find one strong and skilled enough to beat him.
A group of diminutive gangsters, supposedly working for Aku, that arent very good at their jobs. They have more than a passing resemblance to the Ant Hill Mob from The Perils of Penelope Pitstop
The Goddess of Water and the Elementals
A water goddess who created a powerful jewel that can control all the world's water supplies. To keep it safe from Aku, she created three elemental guardians, strong enough to drive Aku off though not enough to destroy him.
Kids that are fans of Samurai Jack and are part of Aku's fairy tales.
A tribe of round little white-furred apes (and a wild man who lives alongside them).
- Charles Atlas Superpower: The White Apes have an incredible ability to jump enormous distances due to a regimen of training that they go through.
- Raised by Wolves: The Monkey Man was originally part of a group of humans enslaved by Aku's forces, but was accidently left behind by them as a young child, and was raised by the White Ape Tribe. He's well aware that he's human and not an ape though.
- Training from Hell: The training the white apes undergo to learn their Jump Good skill that they teach to Jack, which involves jumping, running and training with boulders tied to their arms and legs as well as an enormous one on their backs.
- Training the Peaceful Villagers: Jack trains the peaceful apes in nonlethal combat to help them defend themselves against an aggressive tribe of red gorillas that harasses them and steal their food. In return, they train him to Jump Good.
The Two-Headed Worm
A magical two headed worm who is said to be able to grant the wish of anyone who can guess its riddle.
- Blatant Lies: When one of them tells you that one head only tells the truth and the other only lies, it might be lying.
- Shaggy Dog Story: And then Jack discovered that the worm lied. The End.
The Metal Eating Family
A family of lost travellers that are actually metal eating robots.
A brutish gargoyle who seals a magical fairy inside an unbreakable sphere, intending to force her to grant his wish.
- Evil Brit: A sort of Yorkshire accent.
- Taking You with Me: He laughs as he crumbles to dust, because he knows that Jack and the fairy are doomed without him.
The Wishing Fairy
Dome of Doom Champions
Nine champions that Jack has to face for freedom in the Dome of Doom. Their names are Gordo the Gruesome, The Aqualizer, Sumoto, Mr. Roboto, Miotis, Reptor, The Claw, Torto, and Ganeesh.
- Acrofatic: Despite weighing 700 tons, Sumoto can perform a vertical leap several hundred feet into the air.
- The Battledome: Exterior shots of the Dome of Doom are reminiscent of Thunderdome.
- Everyone Calls Him Barkeep: Jack is referred to as "Two-Sandals The Treacherous" in this episode, since that's what the announcer called him when he was hauled into the arena to face Gordo.
- Everything's Better with Monkeys: Gordo is a simian-like alien.
- Large Ham: Basically every fighter in the Dome of Doom with speaking lines, but especially Gordo and the announcer.
- Lizard Folk: Reptor and Torto.
- Multi-Armed and Dangerous: Ganeesh, who resembles a Hindu god.
- Screw This, I'm Outta Here!: Reptor hightails it out of the arena after Jack has cut off his extensible tongue and killed the other champions.
- Shout-Out: The Aqualizer is one to Blaster from Mad Max. Underneath his helmet, Aqualizer is actually a harmless, weak sluglike creature who can't fight on his own.
- The Tooth Hurts: Jack disables Miotis by cutting out his fangs.
- Unstoppable Rage: Gordo goes into a state like this when he's been hurt. It still doesn't do much to help him.
- Wolverine Claws: The Claw's signature weapons.
The Scotsman's Wife
Voiced by: Ruth Williamson
Married to the Scotsman. Not so much a 'skilled fighter' as an elemental force of raw destruction. And insults.
- Action Girl: When properly enraged.
- Badass: Defeated all the robots and sent Jack fleeing for his life.
- Badass Normal: She may not have any powers herself but she's not afraid to fight anyone who's powerful.
- Badass in Distress: Got saved by Jack and The Scotsman but capable of destroying the army that was on the verge of defeating them.
- Berserk Button: Refer to her size and you perish.
- Damsel in Distress: The least distressed damsel you can imagine, but still it was the plot of an episode.
- Eye Scream: Pokes several of the demons' eyes out.
- Fiery Redhead: Stereotypical Scottish temper.
- Flowery Insults: Even more skilled than her husband!
- Gonk: Her personality makes up for it, as long as she's in a good mood.
- Groin Attack: Responds to the Master of the Hunt calling her fat by punching him right in the clock schpiel.
- Hair-Trigger Temper: If you know what's good for you, do not make her angry. Hell, even the scotsman her own husband is afraid of just the thought of angering her.
- One Woman Army: Defeated the whole drone army who Jack and The Scotsman, who are Back-to-Back Badasses, were not even able to defeat toghetter with their swords!
- Shockwave Stomp: She can create one of these by punching the ground.
- Unstoppable Rage: Destroys the entire demon army holding her captive with her bare hands (and feet, and teeth, and forehead...)
The Celtic Demons
A clan of demonic robots, or possibly robotic demons, serving the Master of the Hunt
- Ambiguous Robot: They're demons! With robot insides!
- Behind the Black: When Jack tosses a pebble to the gates of the Castle of Bone, five demons pop out of nowhere with guns at the ready.
Eight nigh-invulnerable killing machines that are design by Exdor as a means to kill Jack. Aku then empowers them and test by destroying Exdor's village and other villages to lure the samurai out. It took a metal gauntlet made by Extor and divine intervention for Jack to destroy them.
The creator of the Ultra-Robots designed to kill Jack, but Aku betrays him by sending his creations to destroy his village. He seeks to redeem himself by building a metal arm for Jack to destroy the robots.
- The Atoner: The robots he created are invincible: helping Jack is his effort at atonement.
- Expy: His name recalls Genndy's previous creation, Dexter: his voice is an homage to Jerry Lewis in The Nutty Professor (probably now better-known for another expy, Professor Frink.
- My God, What Have I Done?: His realization once Aku betrays him.
- Power Fist: A cybernetic arm he makes for Jack that gives him enough strength to cut through the Ultra Robots metal hide.
The Three Monks
Three monks that have trained and meditated their whole lives to climb a massive mountain, atop which there is said a great Truth can be found.
- Maybe Magic, Maybe Mundane: Three passing mountaineers who wander past just as Jack needs to confirm his purpose in life? Or agents of the gods sent to remind Jack what is at stake?
- The Stoic: They're not talkers.
The Farting Dragon
A dragon with a massive intestinal problems whose daily expulsion of gas plagues a nearby city.
- Badass: They're amazing hunters. They were able to catch Jack and not being afraid to tell Aku that they would set him free.
- Hunting the Most Dangerous Game: The samurai is worthy prey.
- Planet of Hats: A whole world of The Hunter.
- Proud Warrior Race: Their leader gives a laconic speech that explains this very succinctly. Aku was willing to pay them very, very well. They don't want the money: they want the hunt.
One of Aku's most powerful minions. He has the ability to summon the essences (souls) of countless warriors from his collection.
- Badass: Aku refers to Demongo as his best, strongest and most powerful servant: one who has never once failed to destroy any threat to Aku.
- Badass Boast. "I am the dealer of destruction, the merchant of doom! And I seek you, Samurai Jack."
- Blade on a Stick: The Samurai Warrior has one of these.
- Dark Is Evil: Just like Aku, he's a ruthless black demon.
- Catchphrase: "My Mastaaaah".
- The Collector: In this case, he collects and enslaves 'essence'.
- Hero Killer: He may be weak on his own, but he is still known for having killed hundreds of warriors and beasts and claimed their essence. He had to have killed at least one of them on his own to start his collection.
- Informed Ability: He was never really seen actually take someone's essence. Also, Demongo is refered as the most powerful minion of Aku, however the only power was from the essences of the warriors inside of him.
- The Jailer: Demongo is a unique example; not only is he a jailer (his victims being enemies of Aku) but his body is the jail, and he can command the imprisoned souls to fight for him. (Until, that is, Jack busts them out.)
- Noodle Incident: The first four warriors Demongo summons are recognized by Jack. Judging by their dialogue, he's met them before, but they had not actually appeared in the show before.
- Psychopathic Manchild: Demongo has shades of this, including sticking out his tongue and making silly taunts.
- Shout-Out: One of the warriors Demongo summons is very clearly one of the Teenage Mutant Ninja Turtles, just with a sumo wrestler outfit instead of a shell. Another heavily resembles Lobo and another Marshal Law.
- Squishy Wizard: His essence-stealing powers make him nearly unbeatable, but as he cheerfully admits, he has basically no fighting skill of his own.
- Your Soul Is Mine: Anybody killed by him or his imprisoned warriors joins them in his collection.
An army of Spartan warriors protecting their secluded homeland from an unrelenting force of robotic monsters.
The Mechanical Beast and Minotaur Robots
An insane AI who's conquered all the lands surrounding its lair aside from the Spartan Kingdom.
- A.I. Is a Crapshoot: Possibly. On the other hand, Aku is the most likely source for the Beast's technology. It may be functioning exactly as he intended when it spreads ruin and desolation.
- Zerg Rush: The minotaur robots are simply sent in en masse, over and over. This isn't We Have Reserves, though: after each defeat they drag their fallen comrades or their own lost body parts back for repair.
A rave DJ whose magical rhythm hypnotizes the children of a town Jack passes through.
Olivia and her Father
Two of the townsfolk affected by DJ Salvatores' dance beats.
Josephine and Ezekiel Clench
A pair of married but separated bounty hunters who end up teaming by necessity to take down Jack. It doesn't help much.
An entire graveyard, resurrected en masse to take down Jack.
The Minions of Set
The Minions of Set are three powerful divine beings created by the Egyptian god Set to bring violence and terror to the world. Incredibly strong, fast, agile and with a healing factor that makes them nearly invincible, the Minions are among the most deadly opponents Jack ever faces. Their appearance is loosely based on the Set Animal, or Sha.
A powerful warrior that guards a time portal, waiting for The Chosen One
to find and use it. When Jack finds the portal, he is told by the Guardian that he's not the one, leading Jack to try and beat him anyway.
A hulking cartoony-looking creature of limited intelligence but benevolent nature that Jack finds and unwittingly befriends during his travels. Whilst it is initially annoying, when it sees Jack in pain at the hands of a band of robot bounty hunters, it reveals a far more violent side of itself and rescues him.
- Beware the Silly Ones: See Hulking Out below.
- Cartoon Creature: It looks something like a bear, something like a cat, and it's light blue all over. At best, one can say it looks vaguely like a blue Totoro with three daisies on its head.
- Gentle Giant: It's normally sweet, docile and inoffensive, if annoyingly dimwitted. But, for the love of all that's holy, do not tick it off!
- Hulking Out: When Jack is in danger, it undergoes a terrible transformation, growing several times larger, sprouting immense claws and a huge array of fangs, turning red with mad-looking eyes, and having its daisies replaced by dead-looking treestumps.
- Unstoppable Rage: Utterly mangles the robots who hurt Jack.
A team of 50s-themed robots who manage to get the better of Jack with a lucky shot. Unfortunately, it happened while the Creature was still in earshot.
- The Fifties: All four robots are built to resemble 50s teenagers - greaser hairstyles, poodle skirts, beanies, etc.
- Giant Space Flea from Nowhere: Bounty hunters? A roving team of killbots? Maybe they just hate kimonos? Who knows?
- Mook Horror Show: The Creature leaves them in fragments.
The Greek god of time and space. He was defeated eons ago by his son Zeus and was chained to an abandoned planet in space, while his magical gloves and helmet were hidden on Earth.
The Demon Spirit
A malicious spirit that trap the souls of a family which sets in a haunted house. Jack manages to slay the demon and freed the family inside.
- Animalistic Abomination: Its true form resembles a cross between a humanoid wolf and a dragon.
- Attack of the 50-Foot Whatever: Grows to massive height during the last leg of its fight with Jack.
- Cool Sword: Another weapon it uses in its fight with Jack.
- Dark Is Evil: It's a demon that feeds on souls who initially looks like a black mass of shadows.
- Deliberately Monochrome: It's realm.
- Diabolus Ex Nihilo: It's never been made clear what this thing is or where it came from.
- Drop the Hammer: One of the weapons it uses to fight Jack is a flaming hammer.
- Eldritch Abomination: Possibly the most straight up example next to Aku. It's quite powerful, feeds on souls, doesn't look remotely human, and is probably not even sentient.
- Flaming Sword: Its preferred type of weapon.
- Giant Space Flea from Nowhere: This creature is independent from Aku's services and is basically just a random Villain of the Week.
- Green Thumb: Takes control of some of the vines in the house to bind Jack so it could steal his soul.
- Hoist by His Own Petard: Twice. First, whenever Jack landed a decisive hit, the demon would grow larger to get the advantage. Jack eventually learned to use his willpower to do the same. The demon then tried to finish him off with a homing fireball. Jack grabbed it and tossed it back at him, killing him instantly and freeing the souls of Kuni's family.
- Humanoid Abomination: In its true form.
- Kick the Dog: After devouring the souls of her family, the demon let's Kuni live solely to use her as bait to lure in more victims.
- Knight of Cerebus: One of the few beings in the show that is taken completely seriously. Its episode is possibly one of the scariest in the whole show.
- Make My Monster Grow: The demon grows in size whenever Jack lands a decisive hit on it.
- Mind over Matter: Has telekinesis.
- Nothing Is Scarier/The Spook: Possibly the most terrifying aspect of the creature is how little we know about it. What is it? Where did it come from? Why did it target that family? What did it want with Jack? Is it affiliated with Aku? And is it even sentient? None of those questions are answered and it more or less just is, which serves to make it all the more unsettling.
- Playing with Fire: It can control fire, usually to create weapons.
- Reality Warper: Possibly hallucinations, possibly not. The demon can take full control of the house and its surroundings, such as making doors and windows vanish or casting illusions to make the house look more pristine. However, it's not perfect as when it tried to fool Jack by using the souls of the family, the disguise faltered quite quickly.
- Spontaneous Weapon Creation: It can create weapons out of fire.
- Super Smoke: Its initial form.
- The Voiceless: It never talks and mostly growls and roars.
- Your Soul Is Mine: It feeds on souls. And from what was shown during Jack's imprisonment, the family might have been its most recent victims.
The Shaolin Monks
Practitioners of the ancient art of Shaolin kung fu, hidden away in an ancient temple. Their order is in fact the same that once trained Jack, and their Grandmaster met Jack himself thousands of years before. He's still alive, now being sustained by the very Earth itself, and offers sanctuary to Jack, as the temple is shielded from Aku's view.
- Hidden Elf Village: Their dojo is undetectable, but they use it as a sanctuary and a place of training, not a base: they aren't actively fighting Aku.
- Wacky Wayside Tribe: More significant to Jack than most, since they're one of the few surviving bits of the Earth he remembers.
The Labyrinth Thief
A nameless expert thief who is after the same magical diamond that Jack is.
- Badass in a Nice Suit: Does his burgling in a white suit.
- Enemy Mine: There are a couple of occasions where they have to cooperate against the pyramid's defenses.
- Friendly Enemy: He seems to regard Jack as an interesting complication in a job that might otherwise have been boring.
A robotic ninja clad in black sent by Aku to destroy Jack.
- A.I. Is a Crapshoot: Turned on its creators for no stated reason.
- BFS: Not too big compared to it, but its sword is as big as a building.
- Determinator: Even with its head crushed and three limbs gone, it still tries to kill Jack.
- Eye Beams: Among many, many other weapons.
- Humongous Mecha: It dwarfs skyscrapers. Jack is an ant compared to it.
- More Dakka: A massive armory of guns, missiles, and energy weapons are at its disposal.
- Shockwave Stomp: It's so huge every step it takes warps the ground.
- Shout-Out: Its orange armor and green visor make is resemble Samus Aran.
Voiced by: David Alan Grier
A loudmouthed samurai wannabe who challenges Jack to a duel to prove he's the better fighter. Their duel is a comical
mismatch. Watching Jack fight a real threat, and his humble personality and behavior, sets Da Samurai down the path towards true enlightenment.
- Attention Whore: He is constantly obsessed with people thinking of him as a samurai.
- Break the Haughty: His duel with Jack and the humiliation that followed it made him change his ways and try to become a genuine samurai.
- Butt Monkey: His actions make him this.
- The Bully: He was introduced as this until Jack taught him a lesson.
- Chewing the Scenery: He loves attention.
- Crouching Moron, Hidden Badass: To his credit, he did take out a group of robot soldiers with relative ease. He's not completely unskilled, rather a big fish in a small pond who became full of himself due to never fighting anyone stronger than him.
- Curb-Stomp Battle: Stands no chance against Jack in their "fight".
- Defeat Means Friendship: In this case, defeat brings humility, which brings respect.
- Fake Ultimate Hero: He learned this the hard way. Seeing Jack in action, though, kept him encouraged.
- Heel-Face Turn: He was never evil, but he bullied the people he protected and forced them to give him things for free in return for defending them. After Jack shows him what a real samurai is like, he starts to try to act more like one.
- Humiliation Conga: His entire fight with Jack knocks him down a few pegs.
- Jerkass: He has no manners towards others.
- Jerk with a Heart of Gold: He's not a bad guy, which Jack seems to notice. By the end of the episode he seems to be getting better.
- Jerkass Façade: Da Samurai acted like a jerk because he thought that it made him look like a samurai. Jack proved him wrong, which made him realize that he wasn't '"so bad after all".
- Jive Turkey: Biiiiig time.
- Taking the Bullet: His first step toward being a true hero was pushing Jack out the the way of a stun ray. Jack acknowledged him for it.
- Took a Level in Kindness: By the end of his episode.
Princess Mira and the Bounty Hunters
Siren #2 voiced by: Janine La Manna
Prince Astor and Princess Verbina
Prince Astor voiced by: Matt Levin
- Expy: Aside from their butterfly designs, they borrow heavily from Luke Skywalker and Leia Organa.
- Heavy Worlder: Inverted. Their home world has less gravity than Earth, making them seem weak on Earth. In a similar gravity to their home world, they are great fighters.
The Seasons of Death
A retired enforcer robot
with emotions. He was blackmailed into targeting Jack. See, Aku had kidnapped the one thing dear in the robot's life: his precious dog LuLu... sweet thing.
- A Boy and His X: A Robot and his Dog.
- Anti-Villain: Type II. Depends on how you view his mission.
- Badass in a Nice Suit: You have to admit, this robot has style.
- Bottomless Magazines: Averted, but due to spare magazines stored in his arms with a special mechanism to reload his guns, he can reload very quickly, without even a one-second break in concentration.
- Failure Is the Only Option: The series isn't named Robot Assassin X9... and Lulu, Sweet Thing. You know it's going to end in heartbreak.
- Film Noir: His episode is a salute to the genre.
- Forced Into Evil: He started as a robot that just followed his instruction commands. Later, Aku forced him to fight Jack by kidnapping his dog.
- Genre Savvy: He's seen Jack's handiwork against the bug-bots and knows that he fighting him is likely hopeless, but for Lulu's sake he goes in anyways.
- Glowing Mechanical Eyes: Seem to be Red Eyes, Take Warning, but they're actually just part of his model design.
- Guns Akimbo: To go with his mobster look.
- Heel Realization: Because of his emotions, he came to understand how immoral Aku was and left to live in peace, and he went largely unnoticed because Aku's evil scientists replaced the X series robots with the bug-bots seen prominently in many other episodes.
- Heroic Bloodshed: The bot may have been serving a greater evil purpose, but he was still only trying to save his dog.
- Hitman with a Heart: Provides the current page image!
- Homage: X9's robot form looks very similar to the T-800 endoskeleton from The Terminator, and has a similar purpose; both robots were built for violence and to enforce the will of an evil overlord. In addition, both are considered obsolete models in their respective franchises.
- Implacable Machine: It's been his job for a long time.
- It Amused Me: As X9 explains, the scientist who gave him the "experimental emotion chip" did so simply because, "He was kinda funny that way."
- Just a Machine: Possibly averted due to Jack's reaction after X9 muttered his dying words.
- Killed Off for Real: Inevitably, after a tension-filled confrontation, Jack catches X9 while his back is turned and runs him through. Because X9 refused to back down for the sake of Lulu, Jack had no choice but to finish off X9 before the robot did the same to him. X9's final request was for Jack to find his precious Lulu and take care of her before he went offline for good.
- Last of His Kind: The rest of his series were destroyed one by one as the years went by. Plans to build more were eventually scrapped in favor of the bug-bots.
- More Dakka: Of the pistol variety. Only once do we see him actually taking a accurate shot.
- One Last Job: The whole plot of the episode. Aku blackmails him into doing it.
- Personality Chip: His greatest strength and biggest flaw.
- Sliding Scale of Robot Intelligence: Average Joe Android. What he lacks in social skills he makes up for with musical ability and love for his dog.
- Sugar and Ice Personality: A calculating robot with a soft spot for puppies.
- Super Prototype: Thanks to his emotion chip. In a way it was a prototype within a prototype.
- Trench Coat Brigade: The last surviving member of one, anyway.
- Verbal Tic: "Lulu... sweet thing."
- What Measure Is a Mook?: Flip-flopped - it's made clear that most of Aku's army really are just killing machines that need to be destroyed. X-9 is an exception, but of course there's no way for Jack to know that until it's too late.
- What Measure Is a Non-Human?: Played straight and very strongly.
- Badass and Baby: Jack has to deal with some robot trolls while simultaneously seeking out the baby's parents.
- Troubling Unchildlike Behavior: Jack apologizes when he finds the child's parents, explaining that 'your son has seen death.'
Odin, Ra, and Vishnu
Odin voiced by: Richard McGonagle
The three deities that fought and exterminated the black mass that spawned Aku eons ago. They are the ones that crafted Jack's sword: the one weapon that can harm Aku.
Ra is also summoned to save Jack from the Minions of Set.
- Big Good: They're the only thing Jack has to offer prayer to.
- The Plan: Obviously they have a long-term plan for the destruction of Aku, and for some reason can't move to destroy him directly. There's no clue whether Jack's disappearance was seen as a failure of the "magic sword" strategy, but they're still backing him up (in ways Aku can't detect) now that he's back.