%% ZeroContextExample entries are not allowed on wiki pages. All such entries have been commented out. Do not uncomment them without explaining how they apply to the characters.

[[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 altter 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 him being his best friend.
* BackToBackBadasses: He and The Scotsman ever since the first time the two started working toghetter.
* {{Badass}}: One man, lost in time, declares war on the invincible, immortal ruler of the Earth. And in nearly every episode, he claws his way closer to victory.
* BadassBack: Just trying to attack him from the back would get you sworded 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.
* BadassNormal: Jack has fought all kinds of high-tech or supernatural villains with nothing but his skills and his divinely-forged blade.
* BadassPacifist: Jack would bow down for you to avoid a fight, but will not hesitate to slice off at any evil threat.
* 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.
* 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.
* {{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.
* 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. The playing field was even when the robots' creator, Extor, granted Jack a power gauntlet which increased his raw strength enough to where he could slice through the robots. It broke before he defeated 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.
* 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 recogonize some Aku's disguises (no watter what Aku always maintains his coloring) until it's too late.
* 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 appearently also knows a very specialised 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: He doesn't actually ''like'' fighting. It is a tool he would prefer to reserve for Aku and other agents of evil.
--> '''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.
* MosesInTheBullrushes: 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 premier 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.]]
* TheQuietOne: Usually speaks only a few lines each episode; there are even a couple in which he appears, but has no dialogue at all.
* 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'''"''.
* 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: Sums up his mission in life quite nicely.
* ShirtlessScene: Not so much during the first season, increasingly as the show goes on, almost qualifies as a WalkingShirtlessScene at some points.
* SlipknotPonytail: Also a magnet for this after season one (not as much as the ClothingDamage example, but it does happen).
* TheStoic: [[NotSoStoic Most of the time...]]
* 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.)
* 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.
* AttackOftheFiftyFootWhatever: And he is only a ''fragment'' of what he came from.
* {{Badass}}: Not only did he manage to actually rule the world, but has also killed many, many strong and armed warriors in his history of ruling, and is a competent fighter, despite his so-called lack of skills.
* BadassBeard / BeardOfEvil: 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, Aku?
* BadassBaritone: Mako does a good job on his humorous yet diabolical and sinister voice with an EvilLaugh in most of his appearences.
* BadBoss: You're probably safer as one of his victims than one of his minions.
* BewareTheSillyOnes: Aku is actually pretty lovable... and utterly evil.
* BigBad: One of Jack's main goals is to defeat Aku.
* 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, as soon as they fail the mission, even though he never stands to gain anything 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. Understandable though, as 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 "Jack and the Infection" has Aku suffering from a cold and sneezing on Jack, gradually turning him evil.
* 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.
* 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.
* DitzyGenius: While Aku can be smart and cunning, his plans are not always the most well-thought ones.
* 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]].
* EvilCannotComprehendGood: A large reason that his attempt to throw Jack into the future backfired. 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 fighting back his forces would trigger HopeSpringsEternal and start giving the oppressed masses someone to rally behind. Also shows when 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 he didn't really comprehend what being TheHero actually meant -- the closest he can come to understanding heroism was ''free beef jerky for all!'' This wasn't for any altruistic reason, it was because the idea of being loved pleased his ego.
* EvilGenius: Zig-zagged: Aku always has a strategy for his evil plans, but he fails pretty regularly.
* 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 whereever 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.
* {{Jerkass}}: Though he tends to swing 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.
* 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.
* 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.
* LaughablyEvil: He's rather... goofy for being the Ultimate Evil 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: He is able to take out many warriors at once.
* 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 on his own]] was going at too slow a pace for him.
* 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: He doesn't seem to have been conscious in a human sense until the Emperor attempted to destroy his prior form, the evil pool. By the time Jack returns to the timestream, however, Aku is many centuries old.
* SchmuckBait: Aku distributed lots of "magic" around the world - time portals, wishing wells, secret magical or technological weapons. They're always SchmuckBait.
* 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!"
* 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.
* 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 transported to the Pit of Hate. 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.
* 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.

* {{Foreshadowing}}: There are many instances in that episode of Ikra's true identity. When the shaman senses the 'ultimate evil', his last line said to Jack, "You don't understand!" After Jack and Ikra escape from Aku's robots, the robots simply stop their chase and close their eyes with satisfaction, awaring of a trickery. Then, a mouse feeds food from Jack, the mouse is scared of Ikra and digs itself to run away. There is a height difference that Ikra is slightly taller than Jack. When the jewel tests Jack and Ikra's hearts, it found out that Ikra is pure evil. The guardian mainly tries to fire its blast to Ikra (besides Jack not wanting to fight). Near the end, Ikra can fly and becoming a giant to defeat the jewel guardian.
* ObviouslyEvil: Her color scheme: black, green, and red 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 'Birth of Evil', it is the source of all evil. Before it can consume the universe, three deities (Odin, Ra, and Vishnu) arrive to exterminate this great evil. Before it was completely destroyed, a fragment of it escaped and crashed forcefully on Earth in 65,000,000 BC. This is the original incarnation of Aku.

* BiggerBad: Of the whole series. It gave birth to Aku but it's not involved in the main story.
* DarkIsEvil: The true embodiment of evil indeed.
* EldritchAbomination: It is a gigantic, formless mass.
* MonsterProgenitor: Since Aku can shape-shift, this mass at one point becomes a fully black armed creature while fighting the deities.
* PosthumousCharacter: It was already destroyed by the deities, but is reincarnated as Aku.
* UltimateEvil: It has no form.
* WalkingSpoiler: For what Aku originates.

[[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.
* {{Badass}}: He fulfills the role in a much more fun-loving, almost maniacal way than Jack.
* BadassMustache: A contrast with the clean-faced Jack.
* 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.
* 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, and holds his ground for ''three days''.
* 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.
* EverythingsLouderWithBagpipes: His EstablishingCharacterMoment.
--> '''The Scotsman:''' I see by the look on ye face that ye're likin' the sound of me pipes!
* FireForgedFriends: With Jack, whom he refers to as a brother.
* FloweryInsult: Gives one to Jack in their first encounter.
* 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.
* 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".
* 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.
** When a couple of robot alligators bite his arms, he chortles, "Is that the best ye can do!?"
* 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!
* 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, though his reasons for doing so aren't specified.
* 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.
* {{Badass}}: Not as much as Jack, but he still defeated Aku the first time.
* 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.
* {{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.
* GenreSavvy:
** He doesn't rest on his laurels after he defeats Aku and traps him in the tree. He's well aware there's a good chance he could escape from his imprisonment. So he sets up a plan to have his son travel the world to be trained as a OneManArmy while his wife hides away in a monastery with the sword until he's old enough to use it.
** And even then he knows he knows it might not be enough. He says as much when Jack goes to face Aku for the fist time:
--> Be wary, my son, for evil finds a way.
* 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 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 (Dachsund).
* 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 forces the Woolies into walking like animals and preventing 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: They're 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: 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.
* 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.

* DeathSeeker: But only by honorable defeat in combat.
* {{Determinator}}: He was imprisoned in solid crystal and buried inside a mountain by Aku. Over the centuries, he learned to shape the rock around his prison through ''sheer willpower''.
* 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 arent 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.
* 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).

* CharlesAtlasSuperpower: The White Apes have an incredible ability to jump enormous distances due to a regimen of training that they go through.
* RaisedByWolves: The Monkey Man was originally part of a group of humans enslaved by Aku's forces, but was accidently left behind by them as a young child, and was raised by the White Ape Tribe. He's well aware that he's human and not an ape though.
* 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.
* 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.
* WolverineClaws: The Claw's signature weapons.

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

Married to the Scotsman. Not so much a 'skilled fighter' as an elemental force of raw destruction. And insults.

* ActionGirl: When properly enraged.
* {{Badass}}: Defeated all the robots and sent Jack fleeing for his life.
* BadassNormal: She may not have any powers herself but she's not afraid to fight anyone who's powerful.
* BadassInDistress: Got saved by Jack and The Scotsman but capable of destroying the army that was on the verge of defeating them.
* BerserkButton: Refer to her size and you perish.
* DamselInDistress: The least distressed damsel you can imagine, but still it was the plot of an episode.
* EyeScream: Pokes several of the demons' eyes out.
* FieryRedhead: Stereotypical Scottish temper.
* FloweryInsults: Even more skilled than her husband!
* {{Gonk}}: 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 scotsman her own husband is afraid of just the thought of angering her.
* OneWomanArmy: Defeated the whole drone army who Jack and The Scotsman, who are BackToBackBadasses, were not even able to defeat toghetter with their swords!
* ShockwaveStomp: She can create one of these by punching the ground.
* 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 assistance.
-->'''Lead Bot:''' 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 Jacks.
* 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. The sword isn't useless, it's just that Jack's physical strength isn't enough so Exdor gives him a robotic gauntlet that gives him the strength to cut through the robots. [[spoiler:When the power for the arm runs out, Jack uses the power of his ancestors to give him a boost to destroy the last robot]].

->Voiced by: Creator/JeffBennett

The creator of the Ultra-Robots designed to kill Jack, but Aku betrays him by sending his creations to destroy his village. He seeks to redeem himself by building a metal arm for Jack to destroy the robots.

* TheAtoner: The robots he created are invincible: helping Jack is his effort at atonement.
* {{Expy}}: His name recalls Genndy's previous creation, [[WesternAnimation/DextersLab 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: A cybernetic arm he makes for Jack that gives him enough strength to cut through the Ultra Robots metal hide.

!!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
* {{Badass}}: They're amazing hunters. They were able to catch Jack and not being afraid to tell Aku that they would set him free.
* HuntingTheMostDangerousGame: The samurai is worthy prey.
* 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.

* {{Badass}}: Aku refers to Demongo as his best, strongest and most powerful servant: one who has never once failed to destroy any threat to Aku.
** 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'.
* 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.)
* 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.
* 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.

!!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.
* RoyalsWhoActuallyDoSomething: The Spartan King leads his men from the front lines.
* 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. 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.

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

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

* {{Badass}}: The guy was able to manipulate kids through music and fight with Jack.
* 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: Raspy, indeed.
* 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! You're beats are bad!
-->'''Salvatore:''' That's right, they bad!
-->'''Jack:''' Not bad good! Bad bad!
-->'''Salvatore:''' Whatever!
* 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: Josphine'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.

!!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.

* {{Badass}}: They are the personal servants of a god, and are not of the mortal world. They are stronger, faster, more agile and fight with more brutality than any opponent before them. In some ways they are even more powerful than Aku, as they do not share his weakness to the power of human righteousness, shrugging off strikes from Jack's sword like they're nothing. Jack admits they are the most powerful opponents he has ever faced up to that point (this was shortly before his encounter with the Guardian - see below.)
** Keep in mind that even though the Guardian ''might'' be more powerful than the Minions of Set, he can by his own admission be defeated, if only by TheChosenOne. The Minions of Set, on the other hand, can ''never'' be defeated without [[DivineIntervention Divine Intervention]].
* 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 off-screen assaults, being completely unaware of the incoming threat until the camera pulls back at the last possible moment and reveals it to the viewer.
* 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 with each other 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 essence boils away with the same eldritch fires.
* 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 middle of 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 attack anything that moves with animal ferocity and machine-like determination, and will not hesitate to 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!'''"
* 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.
* [[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.
* {{Badass}}: Being one of the only characters in the series that actually ''beats'' Jack in single combat has to count for something. He has annihilated war machines whose ''thumbs alone'' are bigger than Jack's entire body.
* 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 Demon Spirit

A malicious spirit that trap the souls of a family which sets in a haunted house. Jack manages to slay the demon and freed the family inside.

* 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, doesn't look remotely human, and is probably not even sentient.
* 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 let's 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.
* 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.
* 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.
* YourSoulIsMine: It feeds on souls. And from what was shown during Jack's imprisonment, the family might have been its most recent victims.

!!The Shaolin Monks

Practitioners of the ancient art of Shaolin kung fu, hidden away in an ancient temple. Their order is in fact the same that once trained Jack, and their Grandmaster met Jack himself thousands of years before. He's still alive, now being sustained by the very Earth itself, and offers sanctuary to Jack, as the temple is shielded from Aku's view.

* 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.

!!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.
* {{Badass}}: All of them to some degree, but Princess Mira is distinctly a cut above the others.
* 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 alians, 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".
* 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 / ForegoneConclusion: 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.
* 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.
* 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.
* 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.
* GenreSavvy: He's seen Jack's handiwork against the bug-bots and knows that he fighting him is likely hopeless, but for Lulu's sake he goes in anyways.
* 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 TheTerminator, 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 Implacable Machine]]: 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.
* MoreDakka: Of the pistol variety. Only once do we see him actually taking a accurate shot.
* OneLastJob: The whole plot of the episode. Aku blackmails him into doing it.
* PersonalityChip: His greatest strength and biggest flaw.
* 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.
* TrenchCoatBrigade: The last surviving member of one, anyway.
* VerbalTic: "Lulu... sweet thing."
* WhatMeasureIsAMook: Flip-flopped - it's made clear that most of Aku's army really ''are'' just killing machines that need to be destroyed. X-9 is an exception, but of course there's no way for Jack to know that until it's too late.
* WhatMeasureIsANonHuman: Played straight and very strongly.

!!The Baby

* BadassAndBaby: Jack has to deal with some robot trolls while simultaneously seeking out the baby's parents.
* TroublingUnchildlikeBehavior: Jack apologizes when he finds the child's parents, explaining that 'your son has seen death.'

!!Odin, Ra, and Vishnu
->Odin voiced by: Richard [=McGonagle=]
->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.
* 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.