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[[folder:Samurai Jack]]
->Voiced by: Creator/PhilLaMarr, Jonathan Osser (Young, Jack in Egypt episode), Keith Ferguson (Punch Time Explosion)

Our hero, a samurai and the son of the samurai who initially released (and then defeated) Aku. He trained in every country in the world in preparation for the final battle... only to be hurled into the future before he could land the killing blow. Now he must WalkTheEarth, seeking a way back to the past to finish that battle... not that this will stop him from setting things right in the future as well.

* HundredPercentAdorationRating: Aside from Aku and his minions, Jack's deeds has made him beloved by everyone, and he is now seen as a beacon of hope under Aku's tyranny. He is even revered in outer space, by the Tech Astronauts he helped escape Earth, and the prince and princess of an alien world who were stranded and held captive by Aku, preventing them from saving their homeworld with reinforcements. The latter even builds a statue of Jack on their world after their mission succeeds.
* AppropriatedAppellation: Calls himself Jack after some street kids refer to him as such. (They said it in a way to mean "pal" or "dude", but he didn't know that.) His real name was never given in the series.
* AloofAlly: Jack is one to most of the characters, including the Canine Archaeologists, the Woolies and even the Scotsman, despite the latter being his best friend.
* AsideGlance: He's somewhat prone to this, on occasions when he is so perplexed that a simple confused stare wouldn't be enough.
* AtopAMountainOfCorpses: He ends up standing atop a mountain of robot corpses after defeating them.
* TheAce: He's seen learning more and more, and as the show progresses, he's always getting better at things.
* BackToBackBadasses: He and The Scotsman ever since the first time the two started working together.
* BadassBack: Just trying to attack him from the back will get you sliced in half.
* BadassBoast: "I am the lost son of the land you have pillaged. I am here to reclaim it."
* BadassLongRobe: He is a samurai, so he always wears a long white robe. [[{{Headscratchers}} How he cleans, fixes, or replaces his robe after getting it dirty or torn up from so many battles is unknown]].
* BadassNormal: Jack has fought all kinds of high-tech or supernatural villains with nothing but his skills and his divinely-forged blade.
* BashBrothers: With The Scotsman.
* BecauseDestinySaysSo: [[spoiler: It's heavily implied that he '''will''' be able to go back to the past....eventually. But for some reason the PowersThatBe have decreed it will be a very long time before that actually happens.]]
* BerserkButton: Put simply, evil sets him off.
* BewareTheNiceOnes: HOLY SHIT SHOULD YOU EVER!!! He puts the comfort and life of any innocent being he meets before his own, but getting on his bad side is a death sentence.
* BloodSplatteredWarrior: Well, it's ''[[SymbolicBlood oil]]'' instead of blood, but Jack regardless blatantly and commonly gets the same concept applied to him in his battles with a color change to be PG.
* CharacterDevelopment: Several times during the show.
** In the first few episodes of Season 1, though he was still calm and level-headed, he was also short-tempered, and quick to anger. In "Jack vs. Mad Jack", his anger grew consummately, and was seen losing his temper and morals. However, after fighting Mad Jack for some time, he realizes that it's just an illusion of his anger. Afterwards, Jack learned how to control his anger, he is seen being a lot less hot-headed, and is ''very'' slow to anger.
** At first, he couldn't jump up high enough to reach Aku. However, after meeting the Monkey Man, he learns him to jump that high, or as they say, ''jump good''.
* CelibateHero: He's got at least four valid motives for avoiding romance; it would distract him from his quest, he's a danger magnet, he'd have to return to the past, and he's been burned before. That doesn't stop the fangirls, though.
* TheChosenOne: Revealed to the viewers, but not known to Jack.
* CharlesAtlasSuperpower: He does many astounding, even 'impossible' things, all as a result of his training.
* ChronicHeroSyndrome: He might be able to get home faster if he ignored the suffering of those around him. [[WhatYouAreInTheDark Shoot, because this future might cease to be if he succeeds, no one would ever know.]] But, if he were able to ignore the suffering of those around him, he just wouldn't be Jack.
* ClothingDamage: Seems to be a magnet for it after season one.
* TheComicallySerious: He does have a sense of humor and gets some witty one-liners, but these moments are few and far between.
* CompressedHair: Don't be fooled by that tiny ponytail. Once that pin's gone, you get some long, flowing locks [[{{Hammerspace}} that couldn't possibly make up that tiny ponytail]].
* ConsummateLiar: He frowns on deception, but he can be a pretty good liar when he needs to be.
* CoolHelmet: Wore one in the pilot.
* {{Determinator}}: Aku ''will'' fall. No matter how many obstacles are in Jack's path, no matter how many enemies attempt to destroy him, no matter how many times he fails.
* DepartmentOfRedundancyDepartment: Only this one moment in ''Jack vs Aku''.
--->'''Jack:''' ''I knew, that you knew, that I knew, that you knew that I knew you would cheat''.
* TheDrifter: He doesn't stay in one place for long in his never-ending quest to return to the past.
* EvilKnockoff: Mad Jack, a being that was created from Jack's negative emotions.
* EmpoweredBadassNormal: When wielding his sword, as it is the only thing that can harm Aku.
** Also, during the rematch against the Ultra-Robots. Their adamantium chassis meant that Jack's raw strength wasn't enough to cut them, even with the superior power of his sword. This problem was resolved when the robots' creator, Extor, granted Jack a power gauntlet which increased his physical strength enough to where he could slice through the robots. It broke before he could defeat the last one (a sword wielder), forcing Jack to call on the gods of righteousness to aid him.
* FishOutOfTemporalWater: A resident of the distant past trapped in the distant future. He's managed to adapt pretty well, all things considered.
* ForegoneConclusion: The ending of the episode "Jack and the Traveling Creatures" reveals that, while it will be at least a few years before then, Jack ''will'' [[spoiler: eventually return to his own time]].
* FutureBadass: Shown briefly by the Guardian's time portal.
* GoodIsNotSoft: A sworn protector of the innocents and the biggest threat to all evil villains.
* GoodIsNotDumb: While he's not being hindered by ChronicHeroSyndrome, he's shown he can be very clever.
* HatDamage: Whenever he wears one, it's usually the first thing to go.
* TheHero: He was designed to be a very simple example of the classic hero.
* HonorBeforeReason: Which makes sense, since honor pretty much defines what a samurai is all about.
* HumbleHero: He is generally soft-spoken and will often apologize to those who have offended him, in hopes of averting violence. (This is an action series, so you can guess how well it works.)
* IdiotBall: Not often but sometimes he doesn't recognize some Aku's disguises (no matter what, Aku always maintains his coloring) until it's too late. But then again, he's in a future where anything can happen.
* InASingleBound: An episode has Jack going through TrainingFromHell to massively boost his leg strength and match the incredible jumping skills of a tribe of monkeys. Jack also provides the quote from that episode for this trope.
* IncorruptiblePurePureness: Not Jack himself: one terrifying incident had him fighting TheCorruption in his own body, and it was a mighty struggle. Jack's sword, however, fits the trope more closely: it can't even ''scratch'' the innocent or righteous.
* ImplausibleFencingPowers: Being able slice through anything comes from the sword's magic, but he also blocks gunfire on a routine basis, even at close range.
* KatanasAreJustBetter: Not as a rule (enemies' katanas don't get any special treatment.) Jack's particular sword has a divine heritage and considerable backstory, though. Two other magic swords, a broadsword and what can best be described as a BFS, appear in the series, but Aku doesn't seem terribly worried about them. One belongs to The Scotsman and is an example of LikeCannotCutLike, the other was created by a race of Yeti in the hopes of defeating Jack. They fail.
* KnightErrant: He wanders the land, dispensing justice and hope.
* LanternJawOfJustice: The jaw's half the length of his face, and the man it's attached to is decisively [[ChronicHeroSyndrome just]] indeed.
* LightIsGood: Besides wearing all white and being contrasted against dark enemies, he apparently also knows a very specialized form of ninjitsu that allows him to blend in with the light.
* LimitedWardrobe: Always appear to be wearing the same white kimono - it's even unlimited in its limited-ness, because he keeps suffering ClothingDamage!
** Any money he acquires in his journeys is probably spent on replacement kimonos.
* MadeOfIron: A variant. It doesn't matter how intense the battle is. He always comes out of it alive, and without permanent damage - but he takes a ''lot'' of flesh wounds.
* MartialPacifist: Jack doesn't actually ''like'' getting into fights, but don't push him into one. If he sees no other way out, he might as well just kick your ass.
--> '''Jack:''' ''(To the crowd at the Dome of Doom)'' "I will no longer do battle for your amusement. You will have to get your entertainment elsewhere!"
* MasterOfAll: If it's a type of weapon that existed in his time, he can pick it up and use it expertly. The same goes for when he only has his bare hands. He was also taught a number of other skills, such as sailing, hunting, and horse-riding, and is very good at all of them. The one exception appears to be firearms, as they were not invented during his training, and he is never seen using one.
* MasterSwordsman: While Jack is talented at many things, nothing compares to his swordsmanship, with which he can slice through bullets with ease.
* MosesInTheBulrushes: As soon as Aku attacked their kingdom, his parents sent him out of the country on a twenty-year journey to master every form of combat on (the known parts of) Earth.
* MrFanservice: Oh so much. He's even got some fangirls in-universe!
* NamedByDemocracy: It's what the first people he talks to call him and they introduce him as Jack to their friends... then Jack is put up on his wanted posters...
* NiceGuy: Very much so. He does have a temper, but you have to work hard to set it off. Ordinarily he is humble, polite, kindly generous, and helps with no expectation of reward.
* NiceHat: Sometimes wears one made of straw. Episode 26 reveals that he knows how to hand-weave a hat from the husks of straw, which explains how he always manages to procure replacement hats when they get continually pulverized.
** The pilot had him wearing a kabuto helmet made from scrap metal as part of a set of improvised armor.
* NoNameGiven: "Jack" is an alias he took in the future.
* OddFriendship: The Scotsman is pretty much the only person he could call a friend. They're about as different as they come.
* OneManArmy: In the series premiere he takes down a whole army of killer robots by himself and wins, and in other episodes he routinely destroys multiple opponents at once.
* OnlyKnownByTheirNickname: Jack's real name is never mentioned in the series, not even by his parents! When Jack tells Ikra [[spoiler: (who, as Aku, is almost the only being in the future that ''could'' know Jack's name)]] that he is called Jack, her expression is priceless. [[spoiler: Of course, had she accidentally let slip his ''real'' name, she would have blown her cover right then and there.]]
* PapaWolf: In the final episode of the series, "Jack and the Baby", he bonds with the titular baby after saving him from hungry monsters and finding his mother. When they meet those same monsters again, he personally ensures they won't harm the boy anymore.
* TheQuietOne: Usually speaks only a few lines each episode; there are even a couple in which he appears, but has no dialogue at all.
* RedOniBlueOni: The blue to the Scotman's red.
* {{Samurai}}: No kidding!
* SamuraiPonytail: Jack fits pretty clearly into the first variation of the trope with his noble attitude.
* SetRightWhatOnceWentWrong: His primary goal is to find a way back to his own time so he can destroy Aku before the BadFuture comes to pass.
* ShirtlessScene: Not so much during the first season, increasingly as the show goes on, almost qualifies as a WalkingShirtlessScene at some points.
* SignificantBirthDate: As shown in "The Birth of Evil," he was born the very same day that his father originally defeated Aku.
* SlipknotPonytail: Also a magnet for this after season one (not as much as the ClothingDamage example, but it does happen).
* SpoiledSweet: Jack is very ''noble'' in both senses of the word, being an aristocrat by birth, and also a heroic man with high morals.
* TheStoic: [[NotSoStoic Most of the time]] when he's travelling around and nothing noticeable or sight-interesting things going around him.
* StrongAsTheyNeedToBe: He can consistently fight armies of enemies, but his limit varies depending on what the plot requires, along what his sword can cut through. It can hurt Aku, when almost nothing else can, and bring down giant robots, but it can almost never cut through the weapon his enemy uses.
* SuddenlyAlwaysKnewThat: He occasionally displays skills that he hasn't used before, like blind-fighting to battle the Three Blind Archers, using sunlight to conceal himself to fight the Ninja, and so forth. Such untapped skills are generally easy to justify (see Tyke Bomb.)
* TheTeetotaler: Every time he enters a bar or a canteena, he orders tea or water (sometimes used to make tea).
* ThrowingYourSwordAlwaysWorks: It's come up in a couple of desperate situations.
* TykeBomb: Non-evil example; Jack began training with numerous combat styles and many different warriors as a child, after he and his mother fled Aku's second attack on their homeland. Unlike most other examples, he was still brought up as a [[LawfulGood benevolent samurai with a code of ethics]].
** Flashbacks scattered thorough the series' run show that despite the rigorous training, Jack made many friends in the different countries he visited, played, and learned with the different people and cultures he met. Some people should take notes from this series on how to properly raise a OneManArmy.
* WarriorPrince: The son of an Emperor, and trained in the arts of war.
* TheWisePrince: He's actually a prince, and the day Aku appeared signaled the end of his sheltered childhood.

->Voiced by: {{Creator/Mako}}, Greg Baldwin (Fusionfall), Creator/FredTatasciore (Punch Time Explosion)

Long ago - ''very'' long ago - a single small fragment of an EldritchAbomination 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.

* AchillesHeel: Jack's sword. Also, he can be hurt by other powerful deities such as the Water Goddess.
* TheAgeless: Immortal. That's pretty straightforward.
* ArchNemesis: To Jack.
* AttackOfTheFiftyFootWhatever: And he is only a ''fragment'' of what he came from.
* BackFromTheDead: The first thing he did when he came back to life in the premier was to attack the town, and TakeOverTheWorld.
* BadassBeard [[BeardOfEvil of Evil]]: That's a pretty stylish goatee of flame.
* BadassBoast: ''Who dares to summon the Master of Masters, the Deliverer of Darkness, the Shogun of Sorrow, Akuuuuu?''
* BadassBaritone: Mako does a good job on his humorous yet diabolical and sinister voice with an EvilLaugh in most of his appearances.
* BadBoss: You're probably safer as one of his victims than one of his minions.
* BeenThereShapedHistory: He, or rather his original mindless form, was the comet that wiped out the dinosaurs.
* BewareTheSillyOnes: Aku is a lovable goofball... and utterly evil.
* BigBad: In the intervening time between Jack's time travel, Aku has come to dominate not just Earth, but countless other planets, tyrannizing countless across space and time.
* BigBrotherIsWatching: He possess a screen that allows him to constantly watch Jack wherever he is. It was only interrupted when Jack entered a particularly holy place - resulting in old-fashioned TV static.
* BreathWeapon: Can breathe fire in both his normal form and whenever he turns into a dragon.
* ButForMeItWasTuesday: Inverted, a group of aquatic aliens whose planet can't sustain them anymore due to their world's oceans disappearing come begging him for help. He ''does'' remember them, he just chooses not to help - since he's the one who stole their oceans.
* CardCarryingVillain: Often refers to himself by several evil-sounding titles such as "Shapeshifting master of darkness", just in case you couldn't tell he was evil by looking at him.
* ChronicBackstabbingDisorder: See StupidEvil. He nearly always betrays anybody he works with, even when he has nothing to gain from it.
* CombatTentacles: Whenever he's in octopus form (one of his favorites) or reverts to formlessness.
* TheComicallySerious: He's always funnier when he's trying to be serious. As Genndy Tartakovsky stated, he's meant to have a serious personality but humorous at the same time.
* CompleteImmortality: He hasn't aged at all since the day he was 'born' and heals from injuries almost instantly. The only weapon that causes him real harm and could potentially kill him is Jack's sword. He can be held at bay by a ''few'' other entities (notably the water goddess from the backstory of 'Jack and the Gangsters', and the Ancient Master from 'Jack and the Monks'), but not injured. At all.
* TheCorruption / TheVirus: Aku is a living mass of evil that is capable of infecting anything or anyone, gradually turning them into a small Aku clone. The main impetus of the aptly titled episode "The Aku Infection" has Aku suffering from a cold and sneezing on Jack, gradually turning him evil.
* ADayInTheLimelight: "Aku's Fairy Tales", which focuses on his attempts to win over a group of children. Jack only appears in his stories.
* DarkIsEvil: In addition to being mostly black, his primal form is nothing but a billowing dark mass.
* DeadpanSnarker: Depending on his mood.
* {{Determinator}} Considering the many times that Aku has failed at defeating Jack, Aku will stop at nothing to get him destroyed.
* DiabolicalMastermind: Very cunning and decieving.
* DirtyCoward: Since Jack's sword is the only weapon that can truly hurt him, Aku largely avoids direct confrontation with him, only doing so when he has some kind of advantage. And when he loses that advantage, you can guarantee that he'll pull a VillainExitStageLeft.
* DitzyGenius: While Aku can be smart and cunning, his plans are not always the most well-thought ones.
* DoNotGoGentle: His usual response to a serious setback is to run away. But if that's not an option, he'll fight ferociously with every resource he's got.
* TheDreaded: He's called Aku for a reason.
* DystopiaJustifiesTheMeans: Subverted. The entire world ''could'' be reduced to uniform misery and despair, but he'd rather it present some occasional beauty, hope, and peace... so that he can ''crush it like a bug.''
* EldritchAbomination: Spawned from the remains of a much larger one.
* EvenEvilHasStandards: Aku may be a being of unspeakable evil, but [[WouldntHurtAChild children are free to contradict and question him as they will]]. He may not have a problem with lying to them or brainwashing them, but he thinks hurting a child is actually going too far, despite the fact he could get away with it at any time, and that they tend to make a joke out of him.
* EvilCannotComprehendGood: He'd expected a world ruled by him would allow him to crush Jack effortlessly when he arrived. He never took into account that a hero arriving and successfully resisting him would trigger HopeSpringsEternal and start giving the oppressed masses someone to rally behind.
** Also shows when, out of a desire to be admired, he tries to make himself out as the good guy in the stories he tells to children in one episode... and one of the prime reasons it doesn't work is that he can't really comprehend what 'good' means -- the closest he can come to understanding heroism is 'free beef jerky for all'!
* EvilGenius: Zig-zagged: Aku always has a strategy for his evil plans, but he fails pretty regularly. He has, though, planned some very intelligent and cunning schemes, such as transforming into a woman who saves Jack's life to trick him into the portal he's trying to reach, only to break it. He clearly isn't a dimwit - he did subjugate the Earth - but he's prone to errors in judgement.
* EvilIsBigger: Much bigger, but mostly because he prefers to be big as his standard form.
* EvilGloating: What's the point of hurting people if you don't get to revel in their expressions of horror, despair and hatred?
* EvilIsHammy: The way he talks is so bombastic and over the top!
* EvilIsPetty: Despite having higher goals and ambitions, Aku cannot resist committing unnecessarily cruel and petty things to people he's already screwed over, often to prove he can or just for a sick kick at their expense. He ends up taking it to StupidEvil levels as he ''always'' backstabs anyone he makes a deal with, just to laugh at their misfortune.
* EvilLaugh: Sincere, sinister, and usually preceded by something terrible happening to someone.
* EvilOverlord: Currently rules the whole planet and expanding his empire beyond.
* EvilPlan: Conquering the Earth was a done deal before the pilot ended. The one that drives the plot is his attempts to kill Jack, and, failing that, prevent him from traveling back in time.
* EvilSoundsDeep: As his voice actor once said, "Evil comes from the ''belly.''"
* EvilSoundsRaspy: He has a raspy voice which matches his evil laugh.
* EyeBeams: Multiple types for multiple purposes; force blasts, ''incendiary'' force blasts, alchemy, summoning, teleportation, transformation, necromancy, and general spellcasting. Basically, whenever Aku's feeling lazy, he'll just use his eyes.
* FangsAreEvil: His have the distinct Oriental pattern in which the canines curve outward.
* FauxAffablyEvil: Aku is comedic and likable on the surface and is certainly capable of having nice, civil conversations with people, but he's a monstrous brute who loves to bring misery and suffering to everyone in reach. He would probably be the most disturbing villain in animation history if [[LaughablyEvil he wasn't so damn entertaining to watch]].
* {{Foil}}: He's very much the exact opposite of Jack. While Jack seeks to do good wherever possible, even at risk to his well being and goal of returning to the past, Aku always seeks out any action where he make life miserable for others - even if it would be to his disadvantage in the long run.
* ForTheEvulz: The only real explanation for his actions: Aku does what he does because the suffering of others amuses him, as demonstrated by his signature EvilLaugh.
* FourFingeredHands: Considering he's thoroughly evil, [[FourIsDeath there's probably a meaning to it]].
* GalacticConqueror: Ruling the Earth wasn't enough, so he extended his dominion to other planets. It's not clear whether he's conquering them or just laying waste to them, but he's garnered enough attention to attract aliens (usually traitors, criminals, and bounty hunters) of all sorts to the Earth.
* HolyBurnsEvil: Jack's divinely-forged sword causes him ''horrible'' pain with even the slightest cuts.
* {{Jerkass}}: Though he usually acts in a very civil, polite, cordial, sophisticated and tends to swing [[DependingOnTheWriter back and forth between a comedic villain and truly evil one]]. Notable acts of evil include in the pilot episode when some aliens that lived an aquatic world whose oceans were dried up come to him requesting to live on Earth and he reveals that ''he'' stole their oceans. On another occasion, he forces a scientist to build a set of indestructible robots to kill Jack under the promise of sparing his village if does, and then tests the robots out by having them burn his village to the ground and kill everything in it.
* HeroKiller: In "Birth Of Evil", he [[OneManArmy slaughtered]] [[RedShirtArmy most of the warriors]] serving under Jack's Father. It is also quite likely that Jack's Father later died as an old slave, deprived of water under Aku's reign.
* KickTheDog: Really likes doing this. Outside of his need to back-stab everyone, he also once [[ForcedToWatch imprisoned a Viking king in crystal and forced him to watch as he destroyed his kingdom]], [[CruelMercy after which the grieving sole survivor was made immortal and sealed in the heart of a mountain.]] On another occasion he disguised himself just to accompany Jack on a quest, find a magical artifact Jack could use to return home, and destroy it at the last instant so he could mock Jack.
* KnightOfCerebus: A Zigzagged example. In some episodes, such as the Pilot episode and the "Birth of Evil" two-parter, he's every bit the embodiment of evil he claims to be. In other episodes, he's a [[LaughablyEvil complete clown with some hilarious lines]]. Basically, depending on the episode, he can make you laugh or scream. [[MoodWhiplash Sometimes both in the same episode]].
* LargeAndInCharge: Rules the world and has a ShapeshifterDefaultForm that is usually several stories high at the least.
* LargeHam: So hammy that one of the first things he makes his slaves do is build statues of him. His manner of speaking (as demonstrated by the opening intro) is also based on traditional Japanese Kabuki, which comes across as hammy when translated into English.
* LaughablyEvil: He's rather... goofy for being the UltimateEvil and all. Varies depending on the episode, there are some that present him as legitimately evil and threatening figure. Or sometimes [[BewareTheSillyOnes a bit of both]].
* LikableVillain: He's a pretty fun guy, whenever he isn't performing any genocide and slavery and treachery.
* MadeOfEvil: Aku's substance is flexible, strong, pitch-black, capable of re-sealing after most injuries, and has an ''extremely horrible'' effect when taken internally. It's Evil.
* MakeMeWannaShout: Aku can use loud screams powerful enough to damage the landscape as a form of attack.
* MeaningfulName: The word "aku" means "evil" in Japanese. It's also worth noting that he's the only major character in the series who goes by his (original) name.
* MorphicResonance: He always has the same black, red and green color-scheme in every form he takes.
* NamesToRunAwayFromReallyFast: His namely is ''literally'' "evil" in Japanese.
* {{Narcissist}}: He once said "No mortal can defeat me" right before getting his ass handed to him, asked for a group of fish people to build statues of him every month, and sees Jack as foolish for even trying to fight him.
* NighInvulnerable: Demonstrated when we see stuff outside of Jack attack him. It doesn't seem to matter if it's ancient weapons or advanced technology, mundane forms of attack can't hurt him.
* ObviouslyEvil: Right down to his ''[[BilingualBonus name]]''!
* OneManArmy: Aku has destroyed countless armies all by himself. Nowadays though, he's grown lazy enough that he relies on [[MechaMooks robots]] to do the conquering for him, and hires {{bounty hunter}}s for other dirty work.
* OrcusOnHisThrone: Justified. The entire premise of the show started because Jack could defeat him, so Aku actively avoids facing him himself, unless he's gained some advantage that he's sure will let him win. "Tales of X9" also revealed that the entire reason he relies on an army for conquests is because he found [[TakeOverTheWorld taking over the world]] [[OneManArmy on his own]] was going at too slow a pace for him.
* OurDemonsAreDifferent: He acts a lot like {{Satan}}. He's a demon overlord, who in the future turned the world into a post-apocalyptic wasteland, and lives in a hellish underworld (the Pit of Hate).
* PaperThinDisguise: Due to MorphicResonance, it is often easy for the audience to tell that someone is just Aku in disguise. Jack is sometimes taken in; sometimes not.
* PlayingWithFire: Can toss blue fireballs at opponents.
* Really700YearsOld: Aku (as a sapient being) has existed for centuries or even millenia.
* SchmuckBait: Aku distributed lots of "magic" around the world - time portals, wishing wells, secret magical or technological weapons. They're always SchmuckBait.
* SealedBadassInACan / SealedEvilInACan: Jack's father defeated him by sealing him away instead of killing him. The first episode shows him breaking free and taking his revenge.
* ShapeshifterDefaultForm: Due to his origin it's hard to say if he's Type A or Type B.
* {{Sizeshifter}}: A natural extension of his shape-shifting ability, and in his default form he's usually gigantic. He tends to shrink whenever Jack's sword hits him, though.
* SlasherSmile: Right as he is about to stab Jack with his own sword in "Jack and The Zombies", he sports a sadistic smile with crazy eyes.
* SpikesOfVillainy: His head is covered in branch-like horns and whatever form he takes tends to have a spike on each joint.
* StupidEvil: [[KickTheDog He abuses]] {{Mooks}}, [[MistreatmentInducedBetrayal cheats those who strike bargains with him]], or just spends too much time gleefully torturing Jack when [[JustShootHim he could easily crush him in an instant]]. Jack's very existence is owed to this happening time and time again.
* SuperStrength: Even if he scales down to human size for some reason, he has superhuman strength. This seems to diminish, though, if he scales down into ''several'' human-like forms.
* TakeOverTheWorld: He already has, but apparently it's not enough.
* ThirdPersonPerson: When he's being especially hammy.
* UnskilledButStrong: Played with. Aku has shown on occasion that he is more skilled than he lets on as he is seen using weapons on occasion and is a surprisingly strong hand-to-hand combatant, but he relies mostly on his shapeshifting, his vast magic, and the fact few things can actually hurt him. One of those is Jack's sword.
** This is most shown and somewhat [[DeconstructedTrope deconstructed]] in the aptly titled episode, "Jack Versus Aku". Aku challenges Jack to a final battle with only two rules: Jack is forbidden to use his sword and Aku is forbidden to use his powers. Though Aku manages to hold his own with just his SuperStrength and hand-to-hand skills, Jack proves to be the better fighter and has Aku on the ropes, forcing him to break the rules to turn the tide.
* UnusualEyebrows: "GREAT FLAMING EYEBROWS!"
* VillainousBreakdown: A gradual and humorous one in the episode "Aku Tales". When Aku attempts to win over children from their HeroWorship of Jack by telling them fairy tales painting him as the hero, one of the kids requests a story about Jack. Aku gets angry, but quickly acquiesces, attempting to paint Jack as the villain. As the episode wears on, the children begin to poke holes in Aku's stories, frustrating him and forcing him to change up his stories until they become increasingly convoluted. Eventually, Aku hits his breaking point and teleports back to his lair, greatly annoyed.
* VillainousHarlequin: His perpetual hammy attitude, clownish monster-face and general air of having fun suggest this trope. Though it is, in some ways, a facade.
* VillainsOutShopping: Is sometimes seen just hanging around his base when not attacking Jack, particularly in comedic episodes.
-->'''Aku''' ''(on the phone):'' I ''think'' I'm in the computer... Oh! Yes, Extra thick. ''(Evil Laugh)'' Yes! Thirty minutes or it's free!
* VoluntaryShapeshifting: He can transform into pretty much anything, usually an animal but he can also change his shape to the point where he's outright formless, and even introduces himself as a "shape-shifting master of darkness" during the opening narration.
* WeaksauceWeakness: As mentioned above, despite being an ageless, powerful, and immortal demon, Aku is vulnerable to viral diseases.
* WhenTreesAttack: Is a tree that was possessed by an evil entity that landed on Earth. When Aku moves, often the sound of wood creaking can be heard.
* WouldntHurtAChild: Aku plays with this trope. In the beginning episode, a group of aquatic aliens comes to him seeking shelter on Earth due to having their oceans stolen. Aku admits that he was the culprit, causing the alien leader's son to call him a monster. Aku promptly vaporizes him with his EyeBeams, but consoles the grieving father by telling him that the boy was teleported to the Pit of Hate (where he would be brainwashed until he learns to "love Aku"). In a later episode, he attempts to win over a group of children by telling them fairy tales. And despite being more than capable and having every reason to harm them for their HeroWorship of Jack, he never does. Particularly when one child has the nerve to ask for a story about Jack. Aku gets mad, but acquiesces (though he does try to paint Jack as the bad guy). It seems that for all his evil, Aku draws the line at hurting kids.
** Although considering that Aku's favorite hobby seems to be destroying entire cities and towns, indiscriminately massacring their inhabitants, and enslaving the survivors to a life of hard labor, it would actually be quite likely that many children have been harmed or suffered under his reign.
* YouHaveFailedMe: His response to Demongo's defeat.
* YourSizeMayVary: Possibly justified as given his shapeshifting, but even then his sizes varies from shot to shot. Most of the time, he's 5 times the size of a skyscraper, others he's only a few stories tall.

->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.

* BigDamnHeroes: When she saved Jack.
* EstablishingCharacterMoment: Introduced herself by saving Jack.
* {{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, who thinks it was the robots, is "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, aware of the trickery. Then, a mouse eats food from Jack's hand, but is scared of Ikra and digs underground to run away. When the jewel tests Jack and Ikra's hearts, it found out that Ikra is pure evil. The guardian mainly tries to fire its blasts at Ikra (besides Jack not wanting to fight). Near the end, Ikra can fly and become a giant to defeat the jewel guardian. There's also the fact that her color scheme matches Aku's almost exactly.
* ObviouslyEvil: Her color scheme: black, green, and reddish-orange should've been a dead give away.

!!The Hermit
->Voiced by: {{Creator/Mako}}

Another one of Aku's aliases where he wants Jack to find the Gems of Cronus so that he can revive the Titan.

* GrumpyOldMan: He's that cranky.
* ObviouslyEvil: Again the color scheme!

!!The Black Mass

Only appearing in "The Birth of Evil, Part 1", 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 circa 65,000,000 BC. This is the original incarnation of Aku.

* ApocalypseHow: Attempted to cause a Universal-scale one.
* BlobMonster: It was basically a giant pool of black goo.
* DarkIsEvil: The true embodiment of evil indeed.
* EldritchAbomination: At least Aku has a comprehensible form, but this ''thing'' was an (almost) mindless {{blob monster}}.
* ExtremeOmnivore: It enveloped and devoured any creature that got too close.
* GenericDoomsdayVillain: It wanted to devour the universe, but was vanquished by Odin, Ra, and Vishnu, and it is the source of Aku. That's all we know of it.
* GreaterScopeVillain: Of the whole series. It gave birth to Aku, but it's not involved in the main story.
* MonsterProgenitor: Since Aku can shape-shift, this mass at one point becomes a fully black armed creature while fighting the deities.
* PhlebotinumKilledTheDinosaurs: When it crash-landed on Earth, it caused the extinction of the dinosaurs.
* PosthumousCharacter: It was already destroyed by the deities, but is reincarnated as Aku.
* SatelliteCharacter: It merely serves as the source of Aku.
* TimeAbyss: This thing is at least millions of years of old, if not billions or even longer.
* UltimateEvil: It has no form.


[[folder:Recurring Characters]]
!!The Scotsman
->Voiced by: Creator/JohnDiMaggio

A large, ''extremely'' loud Scottish man, with a sword inscribed with magic runes and a machine-gun false leg. He's about as burly a warrior as you'll find, and one of the few creatures able to match Jack for combat prowess. Their initial meeting (based on the tale of Robin Hood and Little John's first encounter) resulted in a fight that went on for fifty hours and ''still'' didn't have a clear victor.

* AntiHero: Quite a bit more unscrupulous than Jack, though he's still a good guy.
* BackToBackBadasses: He and Jack do it every time they fight together.
* BadassMustache: A contrast with the clean-faced Jack.
* BewareTheSillyOnes: When he's in a good mood, he's a goofy and over-excited guy, but do not hurt Jack, his best friend. You ''will'' die.
* BarbarianHero: He usually solves things with violence. However, that doesn't stop him from helping a friend in need.
* BagOfHolding: His sporran (the pouch on his kilt) can hold all sorts of things. Bagpipes. Grenades. Enormous gold nuggets.
* BaldOfAwesome: Bald except his ponytail, which also marks him as a FieryRedhead.
* BerserkButton: Do '''not''' screw with his bagpipes. He might turn your head into a flour sifter.
* TheBigGuy: The enormous guy.
* {{BFS}}: [[CoolSword A claymore inlaid magic runes.]] He's rather proud of how big it is.
* BloodKnight: Unlike Jack, this guy ''adores'' violence. At one point he apologizes to Jack for 'spoiling his fun' by using a grenade to shorten a fight.
* BoisterousBruiser: Contrasting with Jack yet again.
* BraveScot: He fears ''nothing.'' Well, except the Celtic Master of the Hunt. And his own wife when she's angry.
* BreakoutCharacter: His popularity, along with being one of the only people capable of matching Jack, brought him back for three encore episodes.
* BritishTeeth: Discolored, different lengths, with gaps.
* CharacterDevelopment: He initially started off as a barbaric madman who challenged Jack to a fight, because they were arguing over who should cross the bridge first, and forced him into a fight. However, after working together with him, the Scotsman shows a more friendly side, and is afterwards one of the more lovable characters... as long as he's in the right mood, that is.
* CarpetOfVirility: His head is about the only body part not covered in hair.
* CoolSword: A {{BFS}} with magical runes that grant it powers similar to Jack's.
* CrouchingMoronHiddenBadass: Initially comes off as a comical blowhard who will quickly topple after foolishly challenging Jack to a fight. He then proceeds to match Jack ''blow for blow'', reveals himself to have a magic sword that is equally as powerful as Jack's, holds his ground for ''three days'', and is second only to Jack on Aku's hit list.
* CurbStompBattle: When his opponent isn't Jack, the fight is guaranteed to end quickly.
* DefeatMeansFriendship: He goes from an antagonistic bully to Jack's most trusted ally after an arduous fight.
* {{Determinator}}: Played for laughs. Unlike Jack, who eludes injury, he just suffers the AmusingInjuries and laughs at them.
* DreadfulMusician: He's terrible at playing the bagpipes, just don't tell him that to his face. Ironically, he's quick to criticize the Sirens' singing.
* EverythingsLouderWithBagpipes: His EstablishingCharacterMoment.
--> '''The Scotsman:''' By th' look on ye face I can tell ya like th' pipes, wee laddie!
* FireForgedFriends: With Jack, whom he refers to as a brother.
* FloweryInsult: Gives one to Jack in their first encounter.
* FutureBadass: Shown to be one in the final issue of the comic alongside the titular FutureBadass.
* GoodIsNotNice: In his case, it's downright rude.
* GoodIsNotSoft: The Scotsman is a good friend, but he's not afraid to use his sword and machine gun leg to protect the people he cares about.
* HenpeckedHusband: Hilariously enough, he is completely under the thumb of his wife, who is actually both bigger and stronger than he is, and whom he dotes on endlessly. That said, the two have a happy marriage.
* HappilyMarried: Inexplicable, but true! This is probably the reason why he wasn't affected by the Sirens' song.
* HeroOfAnotherStory: A [[LargeHam HUGE]] story! Aku wants to catch this guy almost as badly as he wants to Jack.
* HotBlooded: He's one of the wildest characters of the show. His outrageousness is almost endless.
* JerkWithAHeartOfGold: He is an obnoxious, violent, bullying, rude, dimwitted braggart with a short fuse. But once you're his friend, there are no limits to his generosity and kindness.
* TheLancer: He's the closest thing Jack has to a best friend in this world.
* LargeHam:
** He's the second most-wanted man on the planet and will brag about it endlessly.
** In "Jack and the Scotsman Part II", he reveals that his clan are even more hammy than him. He doesn't stick around at home much because of that.
* LegCannon: A machine-gun! Doubles as GatlingGood.
* LightningBruiser: Despite being three times the size of Jack, he can easily match the samurai's speed to the point of them ending their fight in a standstill....three days later.
* LikeCannotCutLike: Jack's sword fails to break his thanks to it having similar magical properties.
* MadeOfIron: 2 robots bite him in both his arms - He just asks them if that's the best they can do.
* ManInAKilt: It's definitely not for fanservice.
* MasterSwordsman: He matches Jack blow for blow whenever they duel.
* NoNameGiven: In part because Jack never asked his name. (In fact, the writers didn't bother naming his wife or his clan as well.) Interestingly, he never refers to Jack by his name either, he refers to him as "my friend" or "laddie" (he does in "The Scotsman Saves Jack" though).
* NoodleIncident: It's never made clear how the Scotsman got to the position of 'most wanted man on the planet' (before Jack came along.) It's not a ''surprise,'' mind you, it's just not explained.
* NoSell:
** In "Scotsman Saves Jack Part II", an amnesic Jack, the Scotsman, and a bunch of pirates sail the ocean, only to come within range of the song of {{Enthralling Siren}}s. Everyone on the ship becomes hypnotized, except the Scotsman. Why? The fact is that the song of the siren enchants men due to how beautiful it is to their ears. The Scotsman thinks their singing is horrible and considers what could be the MostAnnoyingSound as beauty to his ears.
** When a couple of robot alligators bite his arms, he chortles, "Is that the best ye can do!?"
** In his first encounter with Jack, Jack performs his iconic jump slash technique against the Scotsman and is baffled when the attack [[LikeCannotCutLike doesn't destroy his sword]].
** In his second appearance he's set on fire [[ItMakesSenseInContext by an exploding bar.]] He's more concerned with finishing his sentence than putting out the fire ''on his face''.
* OddFriendship: You couldn't find two people more different than him and Jack, yet he's overjoyed whenever they cross paths.
* OneManArmy: The more the merrier! Gives him a chance to use MoreDakka and explosives!
* ProudWarriorRaceGuys: The Scotsman's clan are also all a bunch of big, strong, and hot-headed warriors. Oddly, the Scotsman describes himself as being more ''mellow'' compared to his fellow clansmen.
* RedOniBlueOni: The red to Jack's blue.
* TheRival: Friendly competition defines his relationship with Jack.
* SickeninglySweethearts: He and his wife. He describes how beautiful her singing is when confronting the Sirens.
* SuperStrength: He's torn apart tanks, smashed buildings, etc.
* TookALevelInKindness: After becoming friends with Jack.
* TrueCompanions: In "The Scotsman Saves Jack", he dives headfirst into parts unknown all to help an amnesiac Jack get his memories back. He had nothing to gain by doing so, he simply did it out of loyalty to Jack.
* UnskilledButStrong: Compared to Jack, who relies on several sword techniques and fast reflexes to overcome his opponent, the Scotsman simply attacks head on with everything he's got, simply shrugging off any attacks. He's still pretty skilled though, considering he's Jack's equal in swordsmanship.
* ViolentGlaswegian: Uh... check out everything above.
* WalkingTheEarth: Similar to Jack, he mentions in his second appearance that he spends most of his time away from home because the rest of his clan are ''more'' boisterous and loud than he is, and he enjoys the solitude.
* WhatDoesHeSeeInHer: The Scotsman's wife is anything but beautiful, well-mannered, or the type of girl most men would want, yet he fell in love with her.
* WorthyOpponent: He's Jack's. The feeling is mutual.

!!Jack's Father
->Voiced by: Sab Shimono (Old), Creator/KeoneYoung (Young, Birth of Evil episode)

The samurai lord who accidentally awakened Aku when he tried to destroy the corruption he was otherwise unconsciously causing. The gods Odin, Ra and Vishnu forged the sword that would later become Jack's from his righteousness. He manages to seal Aku, until he returns once again to unleash evil. Apart from the first episode and the two-parter covering him awaking and sealing Aku, he mostly appears in flashbacks.

* AnnoyingArrows: Clearly disregards having been struck by some arrows during his fight with Aku.
* BadassMustache
* CoolOldGuy: 'Birth of Evil' shows him when he's in his prime, but in his other appearances he's in his forties or fifties: a man of dignity, confidence and boundless courage.
* CreateYourOwnVillain: Sort of, in an accidental case. The black blob monster he was fighting was already very malevolent, but his attempt at destroying it instead turned it into a sapient evil-doer.
* {{Determinator}}: Destroys the evil pool despite the seeming loss of his ''entire'' personal guard: then fights Aku to a standstill, whittles him down to a mere hateful specter and ''immediately'' begins planning in case this evil should ever return. Five years later, and he willingly goes to his destruction - fighting to the end - in order to give his wife a chance to enact that plan.
* TheEmperor: Of Medieval Japan.
* [[AFatherToHisMen A Father to His People]]: When his pregnant wife tried to discourage him from fighting Aku, noting that he has a family, he replies that he regards all his subjects to be like his children.
* KatanasAreJustBetter: Of course the only reason this one is better is because it's forged by the gods from his righteousness.
* NiceGuy: Like his son, he is very kind and open to people and innocents.
* LanternJawOfJustice: Apparently it's hereditary.
* NiceJobBreakingItHero: On the upside, the pool of evil is no longer inexorably destroying all life. However, now it's got a consciousness, all of eternity to find a way to return, and a personal grudge against the family. Great.
* NoNameGiven: Much like his son.
* OneManArmy. He was able to fight and defeat the many clones of Aku.
* PapaWolf: He was the protector of his people, until Jack grew up.
* PosthumousCharacter: Except for certain episodes that take place in the past, he's long dead in the present timeline.
* ReasonableAuthorityFigure: Among other things, he won't intercede to stop bullies from bothering his young son (in "Jack Remembers"). That would be abuse of his authority.
* RoyalsWhoActuallyDoSomething: He's actually an emperor, but that doesn't stop him from charging into battle when his subjects are in danger. Now you know where Jack gets it from.
* {{Samurai}}: Like his son after him.

!!Jack's Mother
->Voiced by: Creator/LaurenTom

The wife of the samurai lord. Apart from the first episode and the two-parter covering her husband awaking and sealing Aku, she mostly appears in flashbacks and reminders of encouragement.

* ActionSurvivor: She escapes the kingdom while Aku is annihilating it, in order to get her son to safety.
* BadassNormal: She may not be a fighter, but that doesn't stop her from doing what needs to be done to get Jack on his quest.
** Not to mention she gives birth to her firstborn, in an age with no epidurals, on the ground in front of the charred palace with what looks like only her Handmaidens to assist her!
* NoNameGiven: As with the rest of her family.
* PosthumousCharacter: Just like the Emperor, she's dead in the present timeline.

[[folder:Other Characters]]
!!The Canine Archaeologists
->Rothchild III voiced by: Creator/RobPaulsen
->[=McDuffy=] voiced by: Creator/JeffBennett
->Dreyfuss voiced by: Creator/JeffBennett

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 (Dachshund).
* NiceGuy: They're all very friendly, helpful and polite.
* NonActionGuy: 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.

!!The Woolies

A race from a peaceful, utopian society who were conquered and enslaved by the Critchellites, using the power of the Black Sphere.

* AndIMustScream: The Black Sphere forced the Woolies into walking like animals and prevented them from speaking.
* MadeASlave: Their entire race was enslaved.
* SpaceJews: They even wear yarmulke-like hats in the flashback to their golden age.
* TookALevelInBadass: After being released by Jack, they stomped the Chritchellites easily.

!!The Chritchellites
->Voiced by: Creator/TomKenny

A race of diminutive conquerors who enslaved the Woolies and took over their civilization, claiming it as their own.

* ANaziByAnyOtherName
* FauxAffablyEvil: They seemed like very nice guys, inviting Jack to dinner and such, but when Jack found out that the Chritchellites 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.
* KickTheDog: Their treatment of the Woolies.
* LaserGuidedKarma: 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.
* ShockAndAwe: They use electrified spears as weapons (and "encouragement" to their slaves.)

!!The Astronauts

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.

* LudicrousPrecision: The guy with the calculator, calculating the odds of survival. [[NeverTellMeTheOdds Jack doesn't trust the math]].
* ShoutOut: The Astronaut in the green helmet looks very similar to George Jetson.

!!The Three Blind Archers

Three incredibly skilled archers who guard a magical well at the top of an old tower.

* AnnoyingArrows: Subverted. These are some serious, robot-puncturing, tank-demolishing arrows.
* BeCarefulWhatYouWishFor: 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.
* BottomlessMagazines: 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.)
* HandicappedBadass: The three archers are blind, but still wipe out an entire army with no problem.
* [[SuperSenses 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.

!!Mad Jack
->Voiced by: Creator/PhilLaMarr

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.

* AnAesop: Jack does much better at containing his anger after the Mad Jack incident.
* EnemyWithout: He's a manifestation of Jack's negative emotions.
* EvilCounterpart / EvilTwin: Take a guess.
* HairTriggerTemper: Since he was born of regular Jack losing his temper.
* {{Samurai}}: Physically, at any rate, although he has none of the discipline of ''bushido.''
* SheatheYourSword: How Jack ends up defeating him.
* JerkAss: Possesses none of Jack's nobility or manners.

!!The Triseraquins
An alien tribe who live in a floating city. Their city is menaced by Aku, who demands a simple price for sparing them...

* AtlantisIsBoring: At least, until Aku showed up.
* EasilyForgiven: Jack doesn't hold anything against them, knowing that Aku can manipulate anyone with a deal just too good to pass up.
* EtTuBrute: They aren't inclined toward villainy, but they're being blackmailed.

!!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.

* BloodKnight: Jack initially thinks he is this, and for a measure he was right. But due to circumstances, he doesn't exactly enjoy killing people, but have no choice but to fight as his best as if he throws the fight, it will deny him entry into Valhalla.
* DeathCourse: Designs one to test his opponents. Notably a number of other warriors have succeeded before Jack, but none have succeeded in actually besting him in combat.
* DeathSeeker: As he wishes to join his dead kin in Valhalla, he must die by honorable 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''.
* DuelToTheDeath: The only way to be free of his curse is to ''lose'' one.
* IDieFree: His ultimate goal. Jack grants it to him.
** DyingAsYourself
** GoOutWithASmile
* LightningBruiser: He's a stone giant who's quick enough to keep up with Jack in a swordfight.
* RapidAging: Upon being freed from the curse he rapidly ages from a young man to an elderly as he dies.
* WorthyOpponent: Sets up a DeathCourse to find one strong and skilled enough to beat him.

!!The Gangsters

A group of diminutive gangsters, supposedly working for Aku, that aren't very good at their jobs. They have more than a passing resemblance to the Ant Hill Mob from ThePerilsOfPenelopePitstop.

* GoldfishPoopGang: They're not good for much. Even Aku seems aware of it.
--> '''Aku:''' ''Who dares to summon the Mighty Aku, the Shogun of... oh. It is'' you.
* {{Expy}}: The gangster's boss, "Don", is clearly based on gangster characters played by actor Edward G. Robinson : not only do they [[http://vignette2.wikia.nocookie.net/samuraijack/images/5/59/Don_1.png/revision/latest?cb=20100615083610 look]] [[http://image.toutlecine.com/photos/p/e/t/petit-cesar-1931-05-g.jpg alike]], but they also share the same verbal tic (peppering their speech with heavily accented "yeah!" and "see?" for emphasis).
* HiddenDepths / OffscreenMomentOfAwesome: After knocking Jack out an instant before he could deliver a fatal blow to Aku, they somehow got Jack's unconscious body out of there without Aku being any the wiser (and without being punished for their role in bringing him there.)
* TheMafia: Played for laughs.

!!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.

* DefeatingTheUndefeatable: The Goddess and her creations are among the very few who've ever been able to repel Aku.

!!The Children

Kids that are fans of Samurai Jack and are part of Aku's fairy tales.

* AudienceSurrogate: Particularly when they start to pick at the flaws in Aku's stories.
* HeroWorship: The kids love Jack.


A tribe of round little white-furred apes (and a wild man who lives alongside them).

* ActualPacifist: Until Jack trains them; then they become {{Martial Pacifist}}s.
* CharlesAtlasSuperpower: The White Apes have an incredible ability to jump enormous distances due to a regimen of training that they go through.
* NotQuiteFlight: Not flight, [[InASingleBound jump good]]!
* RaisedByWolves: The Monkey Man was originally part of a group of humans enslaved by Aku's forces, but was accidentally 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.
* TrainingFromHell: 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.
* TrainingThePeacefulVillagers: 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.

* BlatantLies: When one of them tells you that one head only tells the truth and the other only lies, ''it might be lying.''
* ShaggyDogStory: 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.

* TomatoInTheMirror: The family are robots, but don't seem to be aware of it.

!!The Gargoyle

A brutish gargoyle who seals a magical fairy inside an unbreakable sphere, intending to force her to grant his wish.

* EvilBrit: A sort of Yorkshire accent.
* TakingYouWithMe: He laughs as he crumbles to dust, because he knows that Jack and the fairy are doomed without him.

!!The Wishing Fairy

* DamselInDistress: Her tale starts when she's somehow captured by the gargoyle.
* BenevolentGenie: With a rather major drawback - only one wish, ever.

!!Dome of Doom Champions
->Gordo voiced by: Creator/KevinMichaelRichardson
->Aqualizer voiced by: Creator/PhilLaMarr
->Sumoto voiced by: Creator/KevinMichaelRichardson
->Ganeesh voiced by: Creator/KevinMichaelRichardson

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.
* TheBattledome: Exterior shots of the Dome of Doom are reminiscent of Thunderdome.
* EveryoneCallsHimBarkeep: 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.
* EverythingsBetterWithMonkeys: Gordo is a simian-like alien.
* IceCreamKoan: ''Everything'' that Ganeesh says
* LargeHam: Basically every fighter in the Dome of Doom with speaking lines, but especially Gordo and the announcer.
* LizardFolk: Reptor and Torto.
* MultiArmedAndDangerous: Ganeesh, who resembles a Hindu god.
* ScrewThisImOuttaHere: Reptor hightails it out of the arena after Jack has cut off his extensible tongue and killed the other champions.
* ShoutOut: The Aqualizer is one to Blaster from MadMax. Underneath his helmet, Aqualizer is actually a harmless, weak sluglike creature who can't fight on his own.
* TheToothHurts: Jack disables Miotis by cutting out his fangs.
* UnstoppableRage: Gordo goes into a state like this when he's been hurt. It still doesn't do much to help him.
* WeaksauceWeakness: Sumoto, the most formidable of the champions, has one.
* WolverineClaws: The Claw's signature weapons.

!!The Scotsman's Wife
->Voiced by: Ruth Williamson

A woman married to the Scotsman, who was once kidnapped by an army of demonic robots. She's not so much a "skilled fighter", but more of an elemental force of raw destruction (and insults).

* ActionGirl: When properly enraged.
* {{Badass|In Distress}} {{Damsel|In Distress}} [[DamselOutOfDistress out of Distress]]: She had to be rescued by Jack and the Scotsman, but was somehow still capable of destroying the same army that captured her and were about to defeat the two men. Why she couldn't (or wouldn't) save herself earlier [[{{Headscratchers}} is anyone's guess]], but it was likely due to the RuleOfFunny.
* BadassNormal: She may not have any powers herself, but she's not afraid to fight anyone who's powerful.
* BerserkButton: Refer to her size and you perish.
* BruiserWithASoftCenter: While she can be unbelievably powerful and so destructive that she makes a hurricane look like a bad drizzle, in better circumstances she's very nice and dearly loves her husband [[SickeninglySweethearts (and she's not afraid to show it).]]
* ComplainingAboutRescuesTheyDontLike: Might as well be the poster child for the trope. When her husband comes along with Jack to rescue her from the Celtic demons, all she does is nag, complain, and whine about every little thing they do. As a bonus, she does it so loudly, that any hope Jack and the Scotsman had of escaping via stealth is dashed, they are captured by the Celtic demon swarm, and had the lead Celtic demon not made the mistake of calling her [[BerserkButton "fat,"]] Jack and the Scotsman, who were being worn down by a massive ZergRush would have been killed, and she would have been "sacrificed."
* DeadpanSnarker: She throws around sarcasm and sardonicism like no tomorrow.
* EyeScream: Pokes several of the demons' eyes out.
* FieryRedhead: Stereotypical Scottish temper.
* FloweryInsults: Even more skilled than her husband!
* {{Gonk}}: She's so obese and unattractive, that only a a man like her husband can call her beautiful. But her personality makes up for it, as long as she's in a good mood.
* GroinAttack: Responds to the Master of the Hunt calling her fat by punching him right in the clock schpiel.
* HairTriggerTemper: If you know what's good for you, do ''not'' make her angry. Hell, even the her own husband is afraid of just the thought of angering her, and her husband is ''The Scotsman'', who is usually willing to stand up to anyone.
* HappilyMarried: Rarely shows it, but it's there. But we'll ''never'' understand it.
* InformedAbility: According to her husband -- who is [[SickeninglySweethearts hardly an impartial judge]] -- she sings "like an angel". Her voice isn't actually pleasant though.
* JerkWithAHeartOfGold: She's a stereotypically bitchy and nagging housewife, but still loves her husband. She also warms up to Jack, at least until he comments about her size.
* OneWomanArmy: Defeated the whole drone army which Jack and The Scotsman, who are BackToBackBadasses, were not even able to defeat together with their swords!
* ShockwaveStomp: She can create one of these by punching the ground.
* {{Tsundere}}: An interesting Western version of this. While irritated, she's even ruder and louder than her husband. When angry, PRAY TO GOD she gives you a quick death. However in more pleasant circumstances, she's cheerful, kind and polite.
* UnstoppableRage: 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

* AmbiguousRobot: They're demons! With robot insides!
* BehindTheBlack: When Jack tosses a pebble to the gates of the Castle of Bone, five demons pop out of nowhere with guns at the ready.

!!The Ultra-Robots
->Voiced by: KevinMichaelRichardson

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.

* AIIsACrapshoot: ''Intentional'', seeing as Aku is their power source.
* FamousLastWords: The lead bot can only think of one word when Jack cleaves him in half, with some {{divine intervention}}.
-->'''Lead Bot:''' [[YouHaveGotToBeKiddingMe Unbelievable]]...
* FlamethrowerBackfire: The robot with the flamethrower arms is destroyed when Jack cuts off one arm and ignites the robot's remaining fuel with it.
* GatlingGood: One of the robots has two gatling guns for arms.
* InvisibilityCloak: One robot uses a combination of this and a pair of close combat PowerFist.
* KatanasAreJustBetter: The leader droid has a katana meant to simulate Jack's.
* {{Magitek}}: Their power source is actually Aku's essence.
* MoreDakka: The robots that uses projectiles for weapons uses this style of attack.
* NoSell: Exdor worked long and hard to make them a match for Jack, and as such his initial attacks aren't able to phase them. Despite the superior power of his sword, they were made of adamantium, which meant that Jack lacked the raw strength to cut them. Exdor evens this out by giving him a power gauntlet that augments his strength to where he is able to slice through the robots. [[spoiler: When the power for the arm runs out, Jack summons the power of his ancestors and of the spirits to give him a boost to destroy the last robot]].
* RedEyesTakeWarning

->Voiced by: Creator/JeffBennett

The creator of the Ultra-Robots designed to kill Jack, he made them as part of a deal with Aku in order for his home to be spared. Predictably, Aku betrays him by sending his creations to destroy his village. He seeks to redeem himself by helping Jack destory his creations, namely evening out the odds via a power gauntlet.

* TheAtoner: The robots he created are invincible mechnical monsters; helping Jack destroy them is his effort at atonement.
* {{Expy}}: His name recalls Genndy's previous creation, [[WesternAnimation/DextersLaboratory Dexter]]: his voice is an homage to Jerry Lewis in ''The Nutty Professor'' (probably now better-known for another expy, [[WesternAnimation/TheSimpsons Professor Frink.)]]
* MyGodWhatHaveIDone: His realization once Aku betrays him.
* PowerFist: Exdor creates a powerful mechanical gauntlet for Jack's arm; it augments Jack's strength significantly and allows him to slice through the admanatium body of the robots. Shame it runs out of power when there's one bot left.

!!The Three Monks
->Monk #1 voiced by: Creator/CoreyBurton
->Monk #2 voiced by: Creator/KevinMichaelRichardson

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.

* MaybeMagicMaybeMundane: 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?
* TheStoic: They're not talkers.

!!The Farting Dragon

A dragon with a massive intestinal problems whose daily expulsion of gas plagues a nearby city.

* ApologeticAttacker: She would ''love'' to stop inundating the nearby town with rancid vapors.
* BiggerOnTheInside: A rare case where this applies to a living creature. When Jack crawls down her throat to deal with the problem, he finds a WombLevel that's as big as a decent-size cavern system, clearly bigger than the dragon seemed outside.
* SamusIsAGirl: Her voice seems masculine at first, until Jack discovers that the problem is [[MonsterIsAMommy a partially-hatched baby dragon]] in her womb.
* VisualPun: To the Bruce Lee film, ''Film/EnterTheDragon.''

!!The Imakandi
->Voiced by: Creator/KevinMichaelRichardson

A race of lioon-headed hunters, they are considered the greatest hunters in the ''galaxy.''

* HuntingTheMostDangerousGame: The samurai is worthy prey.
* PantheraAwesome: They have lion-like heads, adding more to their appeal aa race of hunters.
* PlanetOfHats: A whole world of TheHunter.
* ProudWarriorRace: 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.

->Voiced by: Creator/KevinMichaelRichardson

One of Aku's most powerful minions. He has the ability to summon the essences (souls) of countless warriors from his collection.

* BadassBoast. "I am the dealer of destruction, the merchant of doom! And I seek you, Samurai Jack."
* BladeOnAStick: The Samurai Warrior has one of these.
* DarkIsEvil: Just like Aku, he's a ruthless black demon.
* {{Catchphrase}}: "My Mastaaaah".
* TheCollector: In this case, he collects and enslaves 'essence'.
* CurbStompBattle: After Jack frees the warriors Demongo trapped, leaving him powerless, the freed warriors gang up on him, and its implied they beat the holy hell out of him before sending him limping back to Aku.
* DirtyCoward: Without his enslaved warriors, Demongo is a sniveling coward who begs and pleads for his life.
* HeroKiller: 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.
* InformedAbility: 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.
* TheJailer: 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.)
* NobleDemon: He seemed very loyal to Aku, calling him his master and even seeking forgiveness from him.
* NoodleIncident: 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.
* OurDemonsAreDifferent
* PsychopathicManchild: Demongo has shades of this, including sticking out his tongue and making silly taunts.
* ShoutOut: One of the warriors Demongo summons is very clearly one of the TeenageMutantNinjaTurtles, just with a sumo wrestler outfit instead of a shell. Another heavily resembles Lobo and another ComicBook/MarshalLaw.
* SquishyWizard: His essence-stealing powers make him nearly unbeatable, but as he cheerfully admits, he has basically no fighting skill of his own.
* YourSoulIsMine: Anybody killed by him or his imprisoned warriors joins them in his collection.
* YouHaveFailedMe: Aku destroys Demongo for his failure.

!!The Spartans

An army of Spartan warriors protecting their secluded homeland from an unrelenting force of robotic monsters.

* {{Determinator}}: Their response to the very real threat of a ForeverWar? HoldTheLine.
* ProudWarriorRace: They realize that they are doomed, and they are committed to dying well. The King mentions that he is the ''fifth'' king to fight in the war.
* RoyalsWhoActuallyDoSomething: The Spartan King leads his men from the front lines. His son does as well.
* WarIsHell: Especially one that can't be won.

!!The Mechanical Beast and Minotaur Robots

An insane AI who's conquered all the lands surrounding its lair aside from the Spartan Kingdom.

* AIIsACrapshoot: Possibly, the Spartan King mentions that their enemy is a mechanical beast who "went mad". 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.
* ZergRush: The minotaur robots are simply sent in en masse, over and over. This isn't WeHaveReserves, though: after each defeat they drag their fallen comrades or their own lost body parts back for repair.

!!The Italian Chicken-Fight Promoter

A sleazy slob who takes advantage of Jack's temporary BalefulPolymorph to climb to the top of his particular field - making animals fight to the death for the amusement of scumbags.

* BadBoss: His prize-fighting chicken doesn't receive medical care, or adequate food, or anything.
* ItsAllAboutMe: Carried to a comical extreme.
* JustAStupidAccent: Even when he's alone, he doesn't actually speak Italian - only broken English with a comically thick accent.
* KarmicTransformation: He happens to bump into the same ''extremely'' cranky wizard who cursed Jack, and... well...
--> '''Chicken With A Stupid Accent:''' Bock-a, bock-a!

!!DJ Salvatore
->Voiced by: Creator/KevinMichaelRichardson

A rave DJ whose magical rhythm hypnotizes the children of a town Jack passes through.

* BaldOfEvil: He's completely bald.
* CoolShades: Wears a pair. They get destroyed after Jack beats him.
* DanceBattler: For the first part of the battle, allowing him to match Jack blow-for-blow.
* DangerouslyGenreSavvy: All it took for him to realize Jack had infiltrated his rave was to spot [[ImpostorForgotOneDetail Jack's katana sticking out from his disguise.]]
* EvilSoundsRaspy: A guttural, raspy voice.
* ForTheEvulz: Possibly the only reason why he has the kids raid the village.
* GatlingGood: When using his PoweredArmor.
* GoldTooth: [[ImprobableWeaponUser Which can shoot lasers!]]
* JiveTurkey: He's a DJ, what do you expect?
-->'''Jack:''' Music maker man! Your beats are bad!
-->'''Salvatore:''' That's right, they ''bad!''
-->'''Jack:''' Not bad good! Bad bad!
-->'''Salvatore:''' What''ever!''
* LeanAndMean: He's rail thin.
* MusicalAssassin: A DJ who uses hypnotic music to brainwash kids into raiding villages. Seems about right.
* PoweredArmor: Uses a special wristwatch to create this from his DJ equipment.
* RedHerring: Invoked. When he first appears, he's covered in shadows and his headphones make him resemble Aku, but then the lights come on and reveal who he really is.
* RhymesOnADime: When ordering the kids to attack Jack.
-->'''Salvatore:''' Let's mix it up with a taste of the bass! Beats in his face! The brand new hardcore track! Jack Attack!
* WhatHappenedToTheMouse: It's never made clear what happens to him after his fight with Jack. But considering what happens to those who fail Aku, he probably won't live long.

!!Olivia and her Father

Two of the townsfolk affected by DJ Salvatores' dance beats.

* BrainwashedAndCrazy: Olivia.
* InelegantBlubbering: Olivia's father, incessantly.
* {{Ruritania}}: Their village is vaguely Bavarian.

!!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.

* BountyHunter: Zeke has quite a reputation: Josephine's success relies on ''not'' having one.
* ChronicBackstabbingDisorder: Hinted at with Josephine.
* HollywoodRestrainingOrder: Hilariously, ''he'' took out a restraining order on ''her.''
* HugeGuyTinyGirl and UglyGuyHotWife
* ImprobableWeaponUser: Zeke's gauntlets. Which turn out to be very multifunctional: pistols, DualWielding knives, bola launchers, tasers, and - of course - clenching.
* LikeAnOldMarriedCouple: Hell, they ''were'' married for a while.
* RevolversAreJustBetter: Josephine's weapon of choice.
* TheVamp: Josephine. She seduces Jack to try and capture him.

!!Dust Zombies

An entire graveyard, resurrected en masse to take down Jack.

* MadeOfPlasticine: Most of them are reduced to powder with a single swing. But there are a ''lot'' of them.
* OurZombiesAreDifferent: Necromancy variety.
* ZergRush: They attempt to swamp Jack with sheer numbers over and over. It gets pretty harrowing.

!!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.

* BehindTheBlack: The entire episode makes extensive use of this technique for conveying the panicked, claustrophobic feeling of being surrounded by swift and powerful monsters, but not being able to keep track of where they actually ''are''. The Minions frequently jump into and out of the black, leading Jack to suffer frequent surprise assaults from off-screen, being completely unaware of the incoming threat until it walks onto the screen, even if it is right in front him.
* ChaseFight: Jack is unable to engage the Minions for more than a few moments at a time without being completely overwhelmed, so most of the episode consists of the Minions chasing Jack through an ancient Egyptian temple.
* CombatParkour: The Minions move with incredible grace and agility for such large and heavy creatures, and use this skill with deadly effect in battle, constantly pouncing at their opponents like animals, rapidly changing position to keep their victims off-guard, performing flips and wall jumps, and even running across the tops of of a long row of pillars, all with flawless precision and execution.
* CombatPragmatist: The Minions of Set have no hesitation or remorse about doing whatever it takes to kill their prey, employing brutal tactics that make merely fighting dirty look admirable. They are predators, not warriors. They want to '''''kill''''' Jack, and they are going to do it one way or another.
* CompleteImmortality: The prophecy concerning the Minions makes it quite clear they can ''only'' be destroyed by the power of a god, specifically, the Egyptian god of the sun. Failure to summon this god will lead to utter disaster as there will be nothing left that can possibly stop them. A strong enough warrior ''might'' be able to drive them back, but nobody will ever be able to ''destroy'' them.
* CurbStompBattle: The Minions are so much more powerful than Jack that it isn't a Curb Stomp Battle so much as it is Jack using every ounce of his skill and power to extend his life for a few more seconds. Every encounter with them forces Jack to focus solely on defending himself, as the Minions' blitz-like battle tactics make them almost impossible to hit. Not that hitting them actually does anything.
* DeusExMachina: Set up all through the episode. Jack can't stop these creatures - the best he can do is summon a PhysicalGod that ''can.''
* EstablishingCharacterMoment: The moment Aku releases them from their prison, the Minions's first act is to mercilessly slaughter all of Aku's robots in a terrifying display of their strength, skill, and utter ferocity.
* FlamingSword / TechnicolorFire: Each Minion has a weapon enshrouded in magical blue flame. When they're finally subjected to a power that can hurt them, their bodies boil away with the same eldritch fires.
* ForgedByTheGods: While they may be evil destructive monsters, the Minions of Set were created by a (chaotic) god. This makes them divine by nature and thus impervious to any attack or weapon unless the attack or weapon itself is divine (like when Ra showed up and barbecued them with his heat vision).
* GlowingEyesOfDoom: The Minions of Set have glowing blue eyes that shine more brightly whenever they become alerted or agitated during hunting. Even when passive their eyeglow is so bright it is clearly visible even in broad daylight in the desert.
* HealingFactor / NighInvulnerable: The Minions have an incredibly powerful healing factor that immediately heals any wound. Even Jack's sword (which has a very good track record when it comes to destroying the indestructible) is not effective: at one point he delivers a vital hit that nearly cuts one of them in half, and it grows back together the instant he finishes his stroke.
* ImplacableMan: Quite possibly the Minions' most terrifying attribute. They are stronger than you. They are faster than you. They do not need to eat or sleep or stop to catch their breath. There is no stopping their rushing, headlong advance. Jack is hunted down relentlessly, barely able to stop running for even for a few moments before the Minions catch his scent and begin the chase anew.
* KnightOfCerebus: The Minions have no comedic traits and are possibly the most dangerous enemies in the whole show next to Aku.
* LightningBruiser: Despite having hugely overbuilt upper bodies, very short, slender legs and enough weight to make the ground rumble beneath their feet, the Minions of Set are ''extremely'' fast and agile. Jack is so overwhelmed by the way they constantly jump around in combat he can hardly tell what direction their attacks are coming from.
* NoHoldsBarredBeatdown: One of the main reasons the Minions of Set are so fearsome is that ''every second'' of their existence is a No-Holds-Barred Beatdown. They will immediately attack anything that moves with animal ferocity and machine-like determination, and will not hesitate to completely mutilate their practically helpless victims in their attempts to kill them.
* NoNonsenseNemesis: Another reason the Minions are so terrifying is that they are ''utterly'' relentless. Once given an objective, they will stop at nothing to complete it. They don't need to rest, eat, or drink. They don't stop to banter, gloat, monologue, or snark. They don't allow Jack a chance to catch his breath. They use every underhanded tactic at their disposal. And they definitely don't let things like collateral damage stop them. They're out to ''kill'' Jack, they ''will'' kill Jack, and they ''[[{{Determinator}} Will. Not. Stop.]]'' '''Ever'''.
* OhCrap: Jack's reaction upon discovering the Minions' empty tomb. The normally calm and collected samurai is so horrified by the revelation he is frozen in place, gawking, allowing the Minions to ambush him.
-->'''Jack:''' ''"The Minions of Set!'''"
* PerpetualMotionMonster: The Minions of Set appear to be completely immortal and invulnerable, require no sustenance whatsoever, and have unlimited stamina and endurance, allowing them to pursue their prey constantly and relentlessly without a moment's pause or hesitation. As powerful as Jack is, he is still only a man, and without the required items to summon Divine Intervention, it is only a matter of time until the Minions finally overpower him and tear him to pieces.
* TheNoseKnows: They can sniff out Jack from virtually anywhere.
* RunOrDie: Jack's only options when faced with immortal, unstoppable ancient Egyptian hell-beasts. And running only delays the inevitable.
* SealedEvilInACan: Originally plagued ancient Egypt until the Pharaoh of the time [[spoiler: summoned Ra]] and had them sealed away inside a stone sarcophagus. Aku releases them in the present to kill Jack.
* SuperStrength: The Minions of Set are huge and very muscular, allowing them to cut stone pillars to pieces, punch a person hard enough to send them flying through the air, and slam a person into a stone wall with enough force to leave a centimeters-deep impression of their body in it. Even their relatively short and slender legs are deceptively powerful, allowing them to run and move with great speed, make huge leaps and perform other acrobatic feats with ease.
* ThePowerOfTheSun: The only thing that can harm the Minions is joining together three pieces of a magical scarab, which summons Ra, the god of the sun.
* TheSpeechless: Although they appear to be capable of understanding human speech, the Minions themselves do not speak, they only bark, growl and roar.
* SummonBiggerFish: The only way to defeat the Minions is to summon the only being that can harm them, Ra.
* [[OneManArmy Three-Monster Army]]: Aku tests the Minions' skills by setting them against a whole battalion of his own [[MechaMooks robotic soldiers]]. [[CurbStompBattle Obviously, the Minions gain victory after only a few minutes]].
* [[UnSkilledButStrong Unskilled, but Strong]]: Not unskilled ''per se'', but rather their impressive skill in battle is directly dependent upon their incredible strength, agility, and especially their invincibility. There is no need to learn to wield exotic weapons or employ specialized fighting techniques when you are an unstoppable monster. Contrast this with the Guardian, who while incredibly powerful, is neither invincible nor immortal and hence needs to actually know how to defend himself in combat.
* VictoryPose: After utterly annihilating Aku's robots, the Minions raise their weapons to the sky in triumphant celebration of their victory and prowess. The Minion with the battle axe even throws a fist pump in for good measure.
* WallCrawl: The Minions are capable of running on walls and even upside down on the ceiling.
* WallJump: Several of them, actually. Being able to magically stick to walls and ceilings helps.

!!The Guardian
->Voiced by: Creator/KevinMichaelRichardson

A powerful warrior that guards a time portal, waiting for TheChosenOne 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.

* AlwaysSomeoneBetter: Has Jack's ''number'' in combat. In fact, he has ''everyone's'' number. The Guardian has triumphed over hundreds of enemies for countless eons.
* AmazingTechnicolorPopulation: He's blue.
* BadassInANiceSuit: He's very fond of his suit too.
* BaldOfAwesome: He's about ten feet tall, very blue, and very bald.
* BeefGate: A rare example outside video games.
* BerserkButton: Jack demolished his suit. He lost his temper, and Jack went from 'losing' to 'being brutally smacked down'.
* BloodKnight: He has a child-like delight in battle.
* CurbStompBattle: Things stop looking equal pretty early on, and Jack's favorite solution against a skilled foe - turning an enemy's aggression against him - turns out to be a NoSell. Things get really bad for Jack. The only reason the Guardian doesn't kill him is because the portal gives him a sign telling him not to.
* DualWielding: First dual wields [[http://en.wikipedia.org/wiki/Sai_(weapon) sai]], then switches to dual wielding firearms.
* ExtremeOmnivore: It's not shown whether he actually needs nutrition in all those eras of fighting, but after he loses his temper with Jack he ''eats'' his shield.
* GunsAkimbo: One a submachine gun, the other a machine gun / rocket launcher. At one point he's ''shooting throwing stars out of the air,'' unerringly, with his off-hand while continuing to blast at Jack with the other.
* HaHaHaNo: This is his response to Jack's request to use the time portal.
* [[YouAreNotReady He Is Not Ready]]: Is told this about Jack after their battle.
* JiveTurkey: Not as extreme as Da Samurai, but the Guardian does have this general speech pattern.
* ImprobableAimingSkills: He has blatant HeroTrackingFailure when it comes to hitting Jack, but was able to shoot a dozen small projectiles out of the air at once.
* LightningBruiser: Tougher, stronger, ''and'' faster. He's toying with Jack.
* MasterOfAll: Even moreso than Jack, because he even uses modern weapons. We see him use [[KatanasAreJustBetter a katana]], sai, a spear (broken into two halves for dual-wielding), machine gun, a rocket launcher, and eventually his bare hands.
* [[MyFavoriteShirt My Favorite Suit]]: [[NoHoldsBarredBeatdown Jack really shouldn't have damaged it.]]
* NighInvulnerability: Missiles don't as much as scratch him.
* NoHoldsBarredBeatdown: Leaving Jack a broken, unconscious mess.
* NoNameGiven: The legend of the time gate in the Land of Moon refers to 'a guardian'. Hence his moniker: his true identity is left completely mysterious.
* [[TheOnlyOneAllowedToDefeatYou The Only One Allowed To Defeat Me]]: He states that only one man will ''ever'' use his timegate - the same man that will defeat him in battle.
--> '''Guardian:''' And you, m'man, ''ain't'' that man.
* [[OutsideContextVillain Outside Context Obstacle]]: At some point, long ago, the portal was built (possibly by Aku, though probably not). Then somebody or something (definitely ''not'' Aku, or there wouldn't be an exception for 'the chosen one') stationed the Guardian there. Where'd he come from? Who gave him this task? And is he there to keep Jack in the future until 'future' Aku is defeated, or for some other reason? We don't know and we never will.
* PetTheDog: When he thinks Jack's will to fight has finally been broken: "Now why don't you leave before you really get hurt!?"
* RedEyesTakeWarning: He's not malicious, but those red eyes ([[EyeGlasses lenses?]]) are indeed a warning.
* ShoutOut: His appearance, usage of a Katana, and the way Jack is reflected in his eyes are all reminiscent of Morpheus from ''Film/TheMatrix''.
* SuperStrength: As if his HyperspaceArsenal wasn't enough.
* TennisBoss: Subverted; Jack thinks he can beat him by bouncing his missiles back at him, but he's sadly mistaken.
* TimeAbyss: The Guardian claims to have been guarding the time portal for "countless eons". The huge pile of rubble, debris, broken down giant robots, war machines and likely countless dead warriors surrounding the gate makes it obvious he has been doing this for a ''very'' long time.

!!The Creature

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.

* BewareTheSillyOnes: See Hulking Out below.
* CartoonCreature: It looks something like a bear, something like a cat, and it's [[AmazingTechnicolorPopulation light blue all over]]. At best, one can say it looks vaguely like a blue Anime/{{Totoro}} with three daisies on its head.
* GentleGiant: It's normally sweet, docile and inoffensive, if annoyingly dimwitted. But, for the love of all that's holy, do '''not''' tick it off!
* HulkingOut: When Jack is in danger, it undergoes a terrible transformation, growing several times larger, sprouting immense claws and [[MoreTeethThanTheOsmondFamily a huge array of fangs]], turning red with mad-looking eyes, and having its daisies replaced by dead-looking treestumps.
* UnstoppableRage: Utterly ''mangles'' the robots who hurt Jack.

!!Roadster Robots
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.

* TheFifties: All four robots are built to resemble 50s teenagers - greaser hairstyles, poodle skirts, beanies, etc.
* GiantSpaceFleaFromNowhere: Bounty hunters? A roving team of killbots? Maybe they just hate kimonos? Who knows?
* MookHorrorShow: 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.

* MadGod: As described in the backstory.
* PublicDomainCharacter: Courtesy of Greek myth.

!!The Demonic Spirit

A malicious spirit that trapped the souls of a Japanese family in a haunted house. Jack manages to slay the demon and free the family inside.

* AnimalisticAbomination: Its true form resembles a cross between a humanoid wolf and a dragon.
* AttackOfTheFiftyFootWhatever: Grows to massive height during the last leg of its fight with Jack.
* CoolSword: Another weapon it uses in its fight with Jack.
* DarkIsEvil: It's a demon that feeds on souls who initially looks like a black mass of shadows.
* DeliberatelyMonochrome: It's realm.
* DiabolusExNihilo: It's never been made clear what this thing is or where it came from.
* DropTheHammer: One of the weapons it uses to fight Jack is a flaming hammer.
* EldritchAbomination: Possibly the most straight up example next to Aku. It's quite powerful, feeds on souls, and doesn't look or act even remotely human.
* FlamingSword: Its preferred type of weapon.
* GiantSpaceFleaFromNowhere: This creature is independent from Aku's services and is basically just a random VillainOfTheWeek.
* GreenThumb: Takes control of some of the vines in the house to bind Jack so it could steal his soul.
* HoistByHisOwnPetard: 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.
* HumanoidAbomination: In its true form.
* KickTheDog: After devouring the souls of her family, the demon lets Kuni live solely to use her as bait to lure in more victims.
* KnightOfCerebus: 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.
* MakeMyMonsterGrow: The demon grows in size whenever Jack lands a decisive hit on it.
* MindOverMatter: Has telekinesis.
* NonStandardCharacterDesign: It's drawn in a "sumi-e" style, even outside of its own realm, unlike the other, fairly simplistic characters.
* NothingIsScarier / TheSpook: 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.
* OurDemonsAreDifferent: An evil, otherworldly spirit that haunted an old house.
* PlayingWithFire: It can control fire, usually to create weapons.
* RealityWarper: 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.
* SpontaneousWeaponCreation: It can create weapons out of fire.
* SuperSmoke: Its initial form.
* TheVoiceless: It never talks and mostly growls and roars.
* WouldHurtAChild: Sure it let Kuni live to use as bait to lure in more victims, but it almost certainly would have devoured her soul too eventually, and it ''did'' take her brother's soul. Plus [[FridgeHorror how many other children could this demon have devoured along with any number of other victims before Kuni's family]]? When you consider that even Aku, who is supposed to be the UltimateEvil doesn't kill or harm children (at least not directly), let alone steal their ''souls'', makes this demonic spirit even ''more terrifying''.
* YourSoulIsMine: It feeds on souls, or at least imprisons them in a {{fate worse than death}}. And from what was shown during Jack's imprisonment, the family may have been its most recent victims.


A Japanese girl whose family was captured by a demonic spirit when it possessed their home.

* BlatantLies:
-->'''Jack:''' What is wrong little girl?
-->'''Kuni:''' Nothing.
* TheBait: [[spoiler: The reason the demon spared her.]]
* CantKillYouStillNeedYou: The demonic spirit could have easily devoured her too like it did with her family but decided to keep her alive to use her to lure in more victims for it to devour. Given how malicious and sadistic this thing is, it could be an act of CruelMercy / KickTheDog as much as it is for its main goal.
* ChildrenAreInnocent: She's probably the most innocent character in the series..
* TheCutie: ..,and the most adorable.
** BreakTheCutie: ''And how!''
* DamselInDistress: Jack assumes she's this when he first encounters her, [[spoiler: and she sure is, and her family even ''more so'']].
* GirlishPigtails
* RapunzelHair: Given how short she is.
* TraitorShot: Lots of them, she likely knows she's luring Jack into a trap and feels guilty about it, but she's too terrified of the demon to tell Jack the truth.
* YouGottaHaveBlueHair: Purple

!!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.

* HiddenElfVillage: 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.
* WackyWaysideTribe: More significant to Jack than most, since they're one of the few surviving bits of the Earth he remembers.
* WarriorMonk: Eastern variants.

!!The Labyrinth Thief
->Voiced by: Creator/RinoRomano

A nameless expert thief who is after the same magical diamond that Jack is.

* BadassInANiceSuit: Does his burgling in a white suit.
* EnemyMine: There are a couple of occasions where they have to cooperate against the pyramid's defenses.
* {{Expy}} [=/=] CompositeCharacter: Of Daisuke Jigen and Arsène Lupin III from ''Anime/LupinIII''. His suit and hat are white instead of black, and he uses a briefcase that doubles as a machine gun rather than a conventional firearm, but the style of his suit and beard are identical to Jigen's. His personality, on the other hand, is based more on Lupin's behavior.
* FriendlyEnemy: He seems to regard Jack as an interesting complication in a job that might otherwise have been boring.

!!The Ninja

A robotic ninja clad in black sent by Aku to destroy Jack.

* {{Ninja}}: His only character trait.
* TheQuietOne: Says [[SilenceIsGolden absolutely nothing]] for his entire episode.

!!Mondo Bot

* AIIsACrapshoot: 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.
* EyeBeams: Among many, many other weapons.
* HumongousMecha: It dwarfs skyscrapers. Jack is an ant compared to it.
* MoreDakka: A massive armory of guns, missiles, and energy weapons are at its disposal.
* ShockwaveStomp: It's so huge every step it takes warps the ground.
* ShoutOut: Its orange armor and green visor make is resemble [[{{VideoGame/Metroid}} Samus Aran]].

!!Da Samurai
->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.

* AttentionWhore: He is constantly obsessed with people thinking of him as a samurai.
* BreakTheHaughty: His duel with Jack and the humiliation that followed it made him change his ways and try to become a genuine samurai.
* ButtMonkey: His actions make him this.
* TheBully: He was introduced as this until Jack taught him a lesson.
* ChewingTheScenery: He loves attention.
* CrouchingMoronHiddenBadass: 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.
* CurbStompBattle: Stands no chance against Jack in their "fight".
* DefeatMeansFriendship: In this case, defeat brings humility, which brings respect.
* FakeUltimateHero: He learned this the hard way. Seeing Jack in action, though, kept him encouraged.
* HeelFaceTurn: 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.
* HumiliationConga: His entire fight with Jack knocks him down a few pegs.
* {{Jerkass}}: He has no manners towards others.
** JerkWithAHeartOfGold: He's not a ''bad'' guy, which Jack seems to notice. By the end of the episode he seems to be getting better.
** JerkassFacade: 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".
* JiveTurkey: Biiiiig time.
* TakingTheBullet: His first step toward being a true hero was pushing Jack out the the way of a stun ray. Jack acknowledged him for it.
* TookALevelInKindness: By the end of his episode.

!!Princess Mira and the Bounty Hunters
->Princess Mira voiced by: Music/GreyDeLisle
->Boris voiced by: Creator/KevinMichaelRichardson
->Jujunga voiced by: Creator/KevinMichaelRichardson
->The Gentleman voiced by: Creator/DaranNorris
->I and Am voiced by: Creator/KevinMichaelRichardson

* AffablyEvil: The Gentleman is a pleasant and well mannered fellow, but a professional killer-for-hire.
* AttackAttackAttack: Boris’ first resort to any problem is to pound it to pieces.
* BadassPrincess: Mira.
* BadassBaritone: Jujunga.
* BadassBoast: The Gentleman: “Now I’m not one to brag, but my blades are faster than any bullet.”
* CampStraight: The Gentleman is a flamboyant dandy, but gets an intrigued grin when he sees their sixth partner is a woman.
* CatsAreMean: The feline aliens, I and Am
* CulturedBadass: The Gentleman is dignified at all times and comes off as being rather posh.
* CurbStompBattle: Jack takes out all six of them in the amount of time it takes a drop of water falling from an icicle to hit the ground.
* CreepyTwins: I and Am are distinctly creepy.
* DressedToKill: The Gentleman.
* DualWielding: The Gentleman carries two throwing knives, and Boris fights with two huge clubs.
* DumbMuscle: Boris.
--> '''Boris:''' Any questions?!
--> '''Mira:''' Have you ''always'' been this stupid?
--> '''Boris:''' ''Yes!!''
* FiveBadBand:
** BigBad: Princess Mira.
** TheDragon: Jujunga.
** TheEvilGenius: I and Am are the most sneaky and tactical.
** TheBrute: Boris.
** TheDarkChick: The Gentleman.
* HeManWomanHater: Boris does not like taking orders from "Wo-man".
* HuskyRusskie: Boris is Russian in the same way that the Scotsman is Scottish: ''five hundred percent.''
* IaijutsuPractitioner: Mira can draw her sword and slash a drop of water falling from an icicle.
* IGaveMyWord: "The Gentleman never goes back on his word".
* InstrumentOfMurder: The bounty hunter Jujunga uses a blowgun disguised as a workable flute; he lures a victim close with his music before using it to ambush with.
* KnifeNut: The Gentleman.
* LargeHam: The Gentleman and Boris are both good examples. The others are much less prone to brag and posture.
* MightyGlacier: Boris is enormous, strong, and very tough. But he's not very quick.
* OvershadowedByAwesome: The Gentleman; I and Am; Boris; Jujunga; and Princess Mira are six interesting, well designed, badass characters. Six of the best bounty hunters in the world. But we know who they're up against.
* PintSizedPowerhouse: Mira. She’s not even half Boris’ size, yet she punches him across the room.
* RhymesOnADime: I and Am.
* SamusIsAGirl: Mira provides the most straightforward example since, well, Samus.
* SesquipedalianLoquaciousness: The Gentleman.
* SingleMindedTwins: I and Am seem to share the same mind. Even if this isn't true, they can certainly communicate with each other telepathically.
* TheSmurfettePrinciple: Mira is the only female member of the group.
* ThirdPersonPerson: Boris and the Gentleman do this sometimes.
* UnskilledButStrong: Boris doesn't care much for technique, but he's certainly good at smashing things. He's at least smart enough to use this to his advantage -- his strategy is to tank hits long enough to get into smashing range.
* WalkingShirtlessScene: Jujunga.

!!The Sirens
->Siren #1 voiced by: Creator/JenniferHale
->Siren #2 voiced by: Janine La Manna
->Siren #3 voiced by: Creator/TaraStrong

* [[EnthrallingSiren Enthralling Sirens]]: They are all beautiful and have eerily enchanting voices.
* EvilCannotComprehendGood: They're confused why the Scotsman is unaffected by their singing.
* ImpossibleHourglassFigure: Carried to an extreme.
* MakeMeWannaShout: Ordinarily, they use their voices to lure men to their cave, but they can weaponize their voices in other ways.
* OneWingedAngel: And in that form, they're ''one'' creature, not three.
* OurMonstersAreDifferent: Unlike classic sirens, these sirens are a three-headed monster disguised as three beautiful women.

!!Prince Astor and Princess Verbina
->Prince Astor voiced by: Matt Levin
->Princess Verbina voiced by: Creator/TaraStrong

* {{Expy}}: Aside from their butterfly designs, they borrow heavily from Luke Skywalker and Leia Organa.
* HeavyWorlder: 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
->Spring Sprite voiced by: Music/GreyDeLisle

* FairySexy: Attractive. But wicked.
* SecretTestOfCharacter: She tempts Jack to give in to his weariness and leave the fight against Aku to others.

->Voiced by: Creator/DaranNorris

A retired [[MechaMooks 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.

* ABoyAndHisX: A Robot and His Dog.
* AntiVillain: [[SlidingScaleOfAntiVillains Type II.]] Depends on how you view his mission.
* BadassInANiceSuit: You have to admit, this robot has style. Though all of his fellow X-model robots wore the same suits.
* BottomlessMagazines: 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.
* EvenEvilHasLovedOnes: His beloved pet dog Lulu, which inspired him to stop being evil. Until Aku noticed and exploited this to force him back into service...
* FailureIsTheOnlyOption: The series isn't named ''Robot Assassin X9... and Lulu, Sweet Thing.'' You know it's going to end in heartbreak.
* FilmNoir: His episode is a salute to the genre.
* ForcedIntoEvil: He started as a robot that just followed his instruction commands. Later, Aku forced him to fight Jack by kidnapping his dog.
* GlowingMechanicalEyes: Seem to be RedEyesTakeWarning, but they're actually just part of his model design.
* GunsAkimbo: To go with his mobster look.
* HeelRealization: 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.
* HeroicBloodshed: The bot may have been serving a greater evil purpose, but he was still only trying to save his dog.
* HitmanWithAHeart: Provides the current page image!
* {{Homage}}: X9's robot form looks very similar to the T-800 endoskeleton from ''Franchise/{{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.
* ImplacableMan: It's been his job for a long time.
* ItAmusedMe: As X9 explains, the scientist who gave him the "experimental emotion chip" did so simply because, "He was kinda funny that way."
* JustAMachine: Possibly averted due to Jack's reaction after X9 muttered his dying words.
* KilledOffForReal: [[spoiler: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.]]
* LastOfHisKind: 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.
* MechaMooks: One of numerous robotic soldiers sent to fight Samurai Jack, but X9 stands out from all the rest...
* MoralityPet / PetTheDog: A literal example when he adopted Lulu the dog, who certainly brought out his good side.
* MoreDakka: Of the pistol variety. Only once do we see him actually taking an accurate shot.
* OneLastJob: The whole plot of the episode. Aku blackmails him into doing it.
* PersonalityChip: His greatest strength and biggest flaw.
* ProfessionalKiller: He was designed to be one. But eventually he decided that he'd rather be an amateur musician.
* RidiculouslyHumanRobots: Because of the aforementioned emotion chip, X9 cared a lot about himself and his dog, which caused him to retire from the assassin life.
* SlidingScaleOfRobotIntelligence: Average Joe Android. What he lacks in social skills, he makes up for with musical ability and love for his dog.
* SugarAndIcePersonality: A calculating robot with a soft spot for puppies.
* SuperPrototype: Thanks to his emotion chip. In a way it was a prototype within a prototype.
* TooDumbToLive: Averted thanks to his emotions, which gave him the self-preservation instincts needed to survive. The other X-robots didn't care about themselves, so they were all slaughtered.
* TrenchCoatBrigade: The last surviving member of one, anyway.
* VerbalTic: "Lulu... sweet thing."
* WhatMeasureIsAMook / WhatMeasureIsANonHuman: Deconstructed very strongly. While it's made clear that most of Aku's army really ''are'' just mindless killing machines that need to be destroyed, X9 is an exception, but of course there's no way for Jack to know that until it's too late.

!!The Baby

* BadassAndBaby: Jack has to deal with some robot trolls while simultaneously seeking out the baby's parents.
* TroublingUnchildlikeBehavior: Jack apologizes when the boy's mother notices the big scowl on his face, explaining that "your son has seen death" and now has "the spirit of the samurai" in him.

!!Odin, Ra, and Vishnu
->Odin voiced by: Richard [=McGonagle=]
->Ra voiced by: Creator/DaranNorris
->Vishnu voiced by: Creator/DaranNorris

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.

* BigGood: They're the only thing Jack has to offer prayer to.
* CrossoverCosmology: [[Myth/NorseMythology Odin]], [[Myth/EgyptianMythology Ra]], and [[Myth/HinduMythology Vishnu]] are deities from different religions.
* ThePlan: 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.
* OurGodsAreGreater: Possibly more powerful than Aku.


[[folder:Comic Characters]]
!!Soule the Seer

An elderly seer who resides in a scorching desert. He sent Jack on to find the Rope of Eons to return to the past. Later, he would use Jack's sword in ritual to try and send Jack back, but his ailing body couldn't handle it and the ritual's failure caused the sword to be destroyed right before he died.

* CoolOldGuy
* ISenseADisturbanceInTheForce: Reality was altered when Aku sent Jack to the future and Soule has felt the universe's misalignment in his bones all his life.
* IncurableCoughOfDeath: During his last appearance, he's showing symptoms of this, and [[spoiler: is dead by the end of the chapter.]]
* [[{{Seers}} Seer]]: He has intimate knowledge of mystical objects and rituals and can show visions of past events using smoke.

!!Queen Krystle the Ageless

She is an immortal queen encountered by Jack in his search for the Rope of Eons while adventuring through her domain.

* GodSaveUsFromTheQueen: She enjoys a lavish lifestyle whie her subjects toil away in misery.
* {{Expy}}: She bears some physical resemblance to [[{{Disney/Frozen}} Elsa]] with similar hairstyles and also being a WinterRoyalLady. But that is where the similarities end.
* ImmortalityInducer: She has retained her youthful appearance thanks to the Thread of Time tied to her hair.
* OlderThanTheyLook: Krystle looks like a beautiful young woman, but in reality she is much older. She is celebrating her 88th birthday when Jack meets her.
* RapidAging: [[spoiler: She turns into a old crone after Jack slashed her Thread of Time.]]
* WinterRoyalLady: She is an ice themed queen from a Nordic land so that is kind of a given.