[[quoteright:293:http://static.tvtropes.org/pmwiki/pub/images/Ben_10_omniverse_temp_2880.png]]

->''WesternAnimation/{{Ben 10}}! He's a [[KidHero kid]] and he wants have fun, but [[ChronicHeroSyndrome when you need a superhero, he gets the job done]]!''\\
''Ben 10! With a [[TransformationTrinket device that he wears on his arm]], he can [[VoluntaryShapeshifting change his shape]] and [[SavingTheWorld save the world from harm]]!''\\
''When trouble's taking place, He [[LeeroyJenkins gets right in its face]]! Ben 10!''\\
''When lives are on the line, [[CatchPhrase It's hero time]]! Ben 10!''
-->'''--ThemeSong'''

The fourth iteration of the ''WesternAnimation/{{Ben 10}}'' franchise following ''[[WesternAnimation/Ben10UltimateAlien Ultimate Alien]]''.

One year has passed since the events of ''Ultimate Alien''. [[TheUnmaskedWorld Earth has eventually been declared a free system, and the aliens now live freely amongst humans]]. Ben, now equipped with his new Omnitrix, is still working for the Plumbers. Eventually, Gwen decides to leave Belwood to go to college, and Kevin follows her. With Ben now alone, Max assigned him a new partner, a young BadassNormal alien plumber named [[AscendedFanboy Rook]] ([[IWorkAlone much to Ben's dismay]]). As Ben must learn to cooperate with Rook, he has to face the arrival of Khyber, a mysterious alien hunter who [[HuntingTheMostDangerousGame set his sights on him]]. [[spoiler:It's eventually revealed Khyber actually is working for Malware, a psychotic Galvanic Mecamorph who had a personnal history with Ben when he was 11]].
Intended to conciliate the style of the original ''WesternAnimation/{{Ben 10}}'' series with its two sequels, the series toned down the DarkerAndEdgier approach introduced in ''WesternAnimation/Ben10AlienForce'' and goes for a entirely new, very simplified art style designed by Derrick J. Wyatt (''WesternAnimation/TransformersAnimated'', ''WesternAnimation/ScoobyDooMysteryIncorporated''...) and DenserAndWackier tone, and [[ContinuityPorn massive references and homages to the original show]], such as bringing back several old aliens, redesigning the main characters so they would look closer to their original counterpart, and multiple {{Continuity Nod}}s and {{Mythology Gag}}s.

Concerning the plot, the show takes advantage on the TimeSkip between the original series and ''Alien Force'', using it to introduce new adventures that took place in the original series era when Ben was eleven years old. These are interleaved as flashbacks with the present-day plot, thus allowing not only to bring back the original series' incarnation of the character while keeping tracks of his teenage self, [[{{Revision}} but also to create new villains, characters and events that have a connection to Ben's past]].

For all the problems it intended to fix, ''Omniverse'' only ended up breaking the base [[UpToEleven even more than it already was]]; While the series assemble a lot of fans from the original show and Derrick Wyatt's previous works, fans of the sequels felt like the ''Alien Force'' / ''Ultimate Alien'' era was being neglected, and that the return to a DenserAndWackier feeling was overly done, to the point the show could no longer be taken seriously at all. Fans of both the original show and the previous sequels also mostly disliked the new artstyle, which felt like a regression, especially when compared to the amazing work ManOfActionStudios did about it in the original show. The show also has been accused to abuse of ContinuityPorn, and relying too much on the nostalgia factor without concern about whether what they did made sense or not.

-----
!!This show contains examples of:
* ActorAllusion: Although he had Armodrillo since the last series, Armodrillo is shown to spin his claws like a drill in ''Omniverse''. [[Anime/TengenToppaGurrenLagann Giga Drill Break]] anyone?
** In "The Frogs of War: Part 2" we meet Ben's new form "Bullfrag", who is wearing some very familiar looking sunglasses.
*** Not to mention YuriLowenthal's character's association with [[{{VideoGame/Persona 4}} a frog]].
** In "Ben Again", Ben admits to Paradox the idea of a Time War is awesome. Maybe minor and another thing that makes Professor Paradox a ''Series/DoctorWho'' {{Expy}}, but Ben's reaction might have to do with his teenage self's voice actor is admitting to being a "Whovian".
** In "Showdown Part 1", Ben gives a vague explanation that he used to like Feedback so much because he felt like he was part of him. Teenage Ben and Feedback are both voiced by the same actor.
** Malware is a malevolent, computer-based villain whose goals essentially amount to world domination, much like {{Brainiac}}, Superman's most well-known arch-nemesis and one of Creator/CoreyBurton's most well-known roles.
** In "Showdown Part 2", [[spoiler:after being absorbed into Malware, Ben has a flashback to the past when his younger self was moping about losing Feedback. At the end of the flashback, his younger self confronts him and present Ben forgives himself for losing Feedback, thus regaining Feedback in reality and escaping Malware. This is rather similar to his voice actor's role as [[VideoGame/{{Persona 4}} Yosuke Hanamura]] facing his shadow and gaining his Persona.]]
* AccidentalMarriage: Thanks to Kevin's scheming, Ben became the fiance of a Tetramand warrior princess named Looma.
* AesopAmnesia: ''A lot'' of the things Ben had already learned in the previous sequels ''or'' the original show (teamwork, fighting without the Omnitrix, etc.) are totally ignored by this show so they can make new episodes about him learning them again.
* AlasPoorVillain: Malware basically shapes up to this, leading to [[spoiler:His Death]]. All Malware initially wanted was to be cured.
* AlienLunch: It was hinted before that exposure to aliens had something to do with Grandpa Max's LethalChef tendencies, but it's made clear in this series that aliens ''love'' his cooking. He's only a LethalChef to humans.
* AlternateUniverse: "Store 23" shows Ben finding himself in universe 23. This is a universe where [[spoiler: Max dies before Ben ever found the Omnitrix, thus Ben 23 never gets the CharacterDevelopment of the original Ben and nearly rips ''Azmuth'' in half because of it!]]
* AndYourRewardIsClothes: Ben saves the universe from being annihilated with Alien X, but [[TheGreatestStoryNeverTold no one believes him]]. He does, however, get a shiny new hooded sweatshirt.
* AnimalWrongsGroup: Pax is an animal rights activist who, on two separate occasions, unleashes creatures that are an inherent danger to other living beings and actually tries to prevent Ben from attempting to curb their destruction because it would require reimprisoning them.
* ApocalypseHow: The Annihilarg in "So Long and Thanks for all the Smoothies" can cause a Class X-4. [[spoiler:And actually does. Undone by [[ResetButton Alien-X]]]]
* ArcNumber: In "Store 23", 23 was pointed out to be a reoccurring theme. Store 23 transported to a world with Ben 23, and the frequency of the interdimensional engine of 23.
* ArsonMurderAndJaywalking: WordOfGod is that Pax got arrested in "Have I Got A Deal For You" due to breaking and entering, Skreegit theft, interfering with Plumber business, and loitering.
* ArtEvolution: The show's animation is simpler, but much more streamlined and fluid than each previous series.
* ArtShift: Much more noticeable than the ''Ben 10'' to ''Alien Force'' shift. [[http://www.toonbarn.com/wordpress/wp-content/uploads/2012/03/Ben-10-Omniverse.jpg Take a look]]. Ben and the gang aren't the only affected ones. Spidermonkey has a new design as well [[http://images3.wikia.nocookie.net/__cb20120328022719/ben10/images/8/8a/Omniverse_Spidermonkey_in_action.png here]].
** Justified in-universe in "So Long, and Thanks for All the Smoothies" when Ben[[spoiler:has to recreate the entire universe due to an alien doomsday device going off, and while everything looks the same, the classic Mr. Smoothy mascot now looks like more of a demented looking character.]]
* AssimilationBackfire: In "Showdown Part 2", [[spoiler:Malware manages to absorb Ben as Waybig into himself. Inside, Ben has a flashback and finally forgives himself for losing Feedback, resulting in him reobtaining and transforming into Feedback to escape from Malware from the inside. Malware was doubly surprised for Ben escaping and doing it as Feedback, the alien he had destroyed in the past.]]
* AsskickingEqualsAuthority: Esther is made leader of the Kraaho after beating their former leader, Seebik.
* AuthorAppeal: Derrick J. Wyatt makes no secret of the fact Grey Matter is his favourite alien; Not only does Grey Matter comes back as a result after being absent for the two previous sequels, but a ''large'' part of the main plot is focused around his species, the Galvan, and two Galvan, Blucik and Driba, are added as regular supporting character.
** He also likes the Gourmands, and "Tummy Trouble" focuses on two particular tribes of them.
* AwesomeMcCoolName: Rad Dudesman.
** If that ain't enough, see MetaphorIsMyMiddleName below.
* BadassInDistress: Magister Patelliday, an old, apparently a bit senile Pisciss Volann Plumber and [[Series/TheAndyGriffithShow Barney Fife pastiche]], gets captured by pirates as a plot-point for "Gone Fishing". While Ben, Rook and Max are trying to find and rescue him, Max assures them Patelliday can handle himself of his own. [[CrouchingMoronHiddenBadass He does]].
* BadassNormal: Rook, who despite being an alien relies on various technology and weaponry to fight. He blocks a laser ''with a spoon'' as an OffhandBackhand.
* TheBadGuyWins: [[spoiler:"Vilgax Must Croak" ends with Vilgax's escape after all the effort Ben and company went to keep him in Incarcecon.]]
* BatmanColdOpen: ''Twice'' in the same episode; the pilot starts with a scene of 10 years old Ben fighting against Malware (and winning); then, we get a scene of present Ben, Gwen and Kevin chasing Zombozo.
* BatmanGambit:
** [[spoiler: Ben and Rook pulled one in "Of Predators and Prey" by faking an argument and letting Khyber kidnap Ben so they could better find him.]]
** [[spoiler:Psyphon does it in "Outbreak" by tricking the Plumbers into shutting down the forcefield so he and his henchmen can escape.]]
** [[spoiler:Kevin pulled one on Ben in "Many Happy Returns" to annul his engagement to Princess Looma by getting ''Ben'' engaged to her instead.]]
** [[spoiler: Attea pulled one in "Frogs of War" to become the Incursean ruler by having Ben take down Emperor Milleous]].
* BeamOWar: [[spoiler:In ''Showdown part 2'', Malware vs Helixe-powered Feedback. Feedback wins.]]
** Another happens in "Frogs of War" [[spoiler:between Way Big's cosmic ray and the Incursean mothership's WaveMotionGun. Way Big wins.]]
* BeardOfEvil: Homaging the ''Franchise/StarTrek'' MirrorUniverse, evil AU Tetrax has a beard made of the same crystal as the rest of him. [[spoiler: though it turns out he's not evil. Or at least, who he's working for isn't. He ''did'' cause a tremendous amount of property damage when we ''thought'' he was evil.]]
* BerserkerTears: 11 years old Ben, of all people, has this when [[spoiler:he almost kills Malware for destroying Feedback.]]
* BestHerToBedHer: This is how Tetramand courtship works. It's an uphill battle for males since female Tetramands are usually stronger. Kevin went along with this in his more criminal youth to get ahold of an indestructible Tetramand engine block for his car. When his fiance Princess Looma goes to Earth to claim him as her husband, Kevin cons Ben into challenging her to a fight. Ben defeats her, but learns too late that this means ''he'' is Princess Looma's fiance now. During the fight, Looma's father fondly reminisces about his courtship battle with her mother.
* BigBad: Khyber seems to be this, [[spoiler: though the episode "Of Predators and Prey" reveals that he is a subversion; he was only TheDragon to [[TheManBehindTheMan Malware and Dr Psychobos]], who form together a BigBadEnsemble.]]
** Ben has become genre-savvy enough to use the words "Big Bad" when describing the concept to Rook, but incorrectly assumes that Psyphon is the Big Bad that's sending the alien attack dog after him. [[spoiler: However, he does eventually find out that Khyber sent the dog after him, but he is again incorrect about Khyber being the Big Bad, when Khyber reveals that Malware is behind everything that is happening]].
** [[spoiler:Nonetheless, the true threat was always Malware, proving himself to be a lot more dangerous and powerful than Khyber or Psychobos combined. Ultimately, he was the one the heroes had to stop--especially since Malware wanted to corrupt Galvan Prime]].
** The villains of the third arc are the Incurseans.
* BigBadWannabe: Billy Billion.
* BizarroUniverse: One appears on "Store 23", where Ben is ''even more'' of an AttentionWhore and FantasticRacism against aliens abounds. [[ArsonMurderAndJaywalking Also there are Mr. Gyros where Mr. Smoothies should be.]]
* BlankWhiteEyes: Ben, Gwen, Kevin, and Grandpa Max get them when [[spoiler: Attea reveals her BatmanGambit]].
* BlatantLies: "The Omnitrix never fails".
* BrainwashedAndCrazy: [[spoiler: The population of Ravana. courtesy of Dr Psycobos and the Incurseans]]
* BreatherEpisode: The third arc comes right after one of Ben's most personal enemies who spanned over two arcs, and the villains of the third arc are the Incurseans, who have much more comical moments, aren't really terribly threatening until the end, and even the actual BigBad, Attea, is usually defeated due to a comical flaw being exploited.
* BriarPatching: Ben pleads with the Kraho not to release NRG from his suit. Naturally, they do, and NRG's true form stops the Kraho device singlehandedly.
* BrickJoke: In "The More Things Change Part 2", Ben accidentally takes out an underground bus driver's brakes due to being in front of it while he's NRG. Later on, Ben as Shocksquatch fights Khyber's pet in "Buglizard" form, with the bus coming again, and having Khyber's pet be run over by it, remembering the car's lack of brakes.
** There's another one in "Special Delivery": A flashback shows young Ben (As Way Big) throwing Mr. Baumann's truck into orbit. In the present, Ben unknowingly knocks it out of orbit after throwing Sunder's jet glider. The truck comes down on Baumann's house a few hours later.
** And in "Ben Again", Paradox mentions something about a Time War to past Ben. Come the very end of the episode, Ben 10,000 appears asking where Paradox is at because he's needed for the Time War.
* BroadStrokes: WordOfGod states that certain elements from previous series will be ignored in favor of a cleaner narrative.
* BrokenAesop: When confronted with Dr Psychobos' FantasticRacism, Azmuth's reaction was to state that trying to prove which one of their two species was the smartest was a waste of time, energy and ressources. This seems like a pretty honorable opinion to stand for, but later, in ''Frogs of War'', [[CreatorsPet Blucik and Driba]], while fighting Psychobos, explicitly state that "The dumbest Galvan is smarter than a Cerebrocrustacean". Nothing seems to contradict them, and, to make things worst, WordOfGod implied that they were right.
* BuiltWithLEGO: Bloxx.
* TheBusCameBack: After two series of absence, [[spoiler:Phil, Max's old Plumber partner]], finally returns, [[spoiler:as a test subject for the Nemetrix]].
** Also, Gwen and Kevin drop by for big arc-enders.
* BusFullOfInnocents: In "Malefactor", Malware sets an oil tanker on course for a school bus as a SadisticChoice for Ben: stop him or save the bus. Naturally, Ben does the latter.
* ButtMonkey:
** Ben is back on being that.
** There's also Pakmar, an alien merchant whose places of business have been destroyed on three separate occasions (The last two times solely due to Ben's presence).
** Similarly, Mr. Baumann, whose store and car usually suffer as a result of Ben's antics.
* BystanderSyndrome: Azmuth dismisses the fact that young Ben is mode-locked into alien form as secondary to his current task, until Ben starts breaking his stuff while looking around. Then he takes a few seconds to deal with it.
* CanadaEh: Shocksquatch speaks in a Canadian accent. More precisely, a Newfoundland accent.[[note]]Newfoundland is Canada's easternmost province. Sasquatch is a Pacific Northwest legend[[/note]]
* CanonDiscontinuity: Given [[WordOfGod Derrick Wyatt's]] comments about Primus and [[http://www.formspring.me/DerrickJWyatt/q/341260942778062074 executive mandates about cleaning up continuity]], this may mean that Primus no longer exists.
** Which is amusing given DJW's attitude to [[Franchise/{{Transformers}} the ''other'' Primus]] in regard to [[WesternAnimation/TransformersAnimated one of his previous shows...]]
** The episode "Ben 10,000 Returns" was also confirmed to be ignored in favor of making Ben's future more like the original series Ben 10,000.
** Inverted with ''Film/Ben10DestroyAllAliens'', which is stated to be classified as canon despite being clearly stated to not be so when it was up.
* CanonImmigrant: [[http://ben10.wikia.com/wiki/Gorvan_%28Alternate_Timeline%29 Gorvan]], a character exclusive to the first ''Alien Force'' video game, makes a brief cameo in "Special Delivery".
* CallBack: In "Showdown, Part 1", Gwen tries to get Ben to transform into Diamondhead before he chooses Feedback, though he transforms into Feedback anyway. He uses the term "What goes around, comes around", something he said while using Diamondhead in the first series [[spoiler:right before Malware destroys Feedback]].
* CardboardPrison: Despite being imprisoned in a high-security cell at the Plumber Base, not only does Animo escape just by digging his way to the sewers, presumably with the help of his ants, but nobody even notices he's gone until Ben and Rook go to visit the cell, suggesting they never even bother to put security camera to watch him. This was forgivable in the original show, where Animo was kept in a regular-looking prison, but the Plumbers, with all their advanced tech and deal with dangerous aliens, have no excuse.
** Averted in "Outbreak." The plumber base has a force field surrounding it that keeps prisoners from escaping. Psyphon and his cronies have to trick Ben and company into completely shutting the energy core down before they can try to escape. How Animo got past this is unexplained.
** Played straight in "Special Delivery". Many villains who should be incarcerated, such as Psyphon and his gang, Zombozo, and Fistrick are free in this episode.
* CastCalculus: Tends to be one way or the other
** ActionDuo: Ben's original PowerTrio is now reduced to mainly Ben and Rook.
** FiveManBand: Alternatively, during events of major crisis involving large battles
*** TheHero: Ben Tennyson
*** TheLancer: Rook Blonko
*** TheBigGuy: Kevin Levin
*** TheChick: Gwen Tennyson
*** TheMentor: Grandpa Max Tennyson
* CatchPhrase: "It's hero time."
** Ben 23 switched up the catchphrase with "It's gyro time," where he goes to eat gyros at his favorite restaurant.
* CerebusRollercoaster: Interestingly ''Omniverse'' may be DenserAndWackier and LighterAndSofter but it does have a rather dark main plot concerning a trio of KnightOfCerebus villains trying to take down Ben. However, most of these darker episodes are sandwiched in between comedic episodic ones.
* ChekhovsClassroom: Humorous example in "It Was Them". When Ben asks Rook how he knows so much about ants, Rook recites a few facts about their massive population and widespread presence across the Earth. When they catch up with Animo, he lectures them about the power of ants... using the exact same statistics, which Ben proudly proclaims he already knows.
* CollectorOfTheStrange: The SpacePirate in "Gone Fishin'?" is collecting ships in bottles to sell at a high price to collectors. That is to say, he collects actual, full-sized ships, bottles them, then sells them. Their crews are of no concern.
* ColorFailure: In "Special Delivery", Psyphon turns completely white in fear when he sees Toepick's hideous face.
* ConservationOfNinjutsu: "Special Delivery" has Ben fighting together an entire army of villains, including several ones (Zombozo, Trumbipulor, Sunder, Fisttrick, the Krahoo...) that could give him a hard time in previous episode of their own and would usually require help to be defeated. When he confront them altogether alone in this episode, however, he [[CurbStompBattle takes them down with incredible ease]].
* ConspicuousCG: A carryover from previous series, where many cars and vehicles are rendered in CG, though this time it's slightly less noticeable.
* ContinuityNod: A lot of them, much in the same way than ''WesternAnimation/TransformersAnimated'' made {{Mythology Gag}}s of previous ''Transformers'' series:
** Shocksquatch, an alien introduced in the crossover ''WesternAnimation/Ben10GeneratorRexHeroesUnited'', is one of Ben's recurring aliens.
** Ben is seen going near Mr Smoothie, a fast food place he frequently went to in AF/UA, while looking for a place to eat. He decides to not go because he feels it would not be the same without Kevin and Gwen.
*** In the flashback in "A Jolt From the Past", young Ben gripes about who would be drinking smoothies... while fighting a Megawatt in the ''Mr. Smoothy'', which is just opening.
** At the end of the pilot, Rook get Ben's acceptance ThroughHisStomach by buying chilli fries on Max's advice. This food was mentioned to be part of his favorite in ''Alien Force'', and was frequently used as a RunningGag around his EvilCounterpart Albedo.
** Ben and Rook fight Megawhatts, with Ben acknowledging he hasn't fought these things in ''years'' (a flashback in the same episode shows that).
** [[EvilCounterpart Albedo]], a villain introduced in ''WesternAnimation/Ben10AlienForce'' who is mentioned to have been Azmuth's assistant, is seen before he went rogue in a 11 years old Ben flashback working with Azmuth.
** Gwen's Anodite form now wears clothes with some similarities to her Lucky Girl suit from the original series.
** In the second episode: all the aliens he transforms into are the Andromeda aliens (barring Shocksquatch, who for some reason replaces [=AmpFibian=]).
** When fighting Khyber in "Of Predators and Prey":
--->'''Ben/Heatblast''': I've defeated [[WesternAnimation/{{Ben10}} Vilgax]] [[WesternAnimation/Ben10AlienForce the Conquerer]]... [[WesternAnimation/Ben10UltimateAlien Diagon the Destroyer]]... what makes you think you're any better?
** The same episode has him using the hoverboard he had in his youth (though like everything, it has a completely different design, though he ''has'' broken a few of 'em);
** In the second part of "Of Predators and Prey", when mentioning people have been trying and failing to get his Omnitrix, Ben mentions a time where someone had "his hand crawl in the Null Void without him", which refers to his first encounter with Sunder.
*** Phil, one of Max's old partners who betrayed the Tennysons in the first series, is shown to be stranded in the Null Void [[spoiler: and is one of the first test subjects for the Nemetrix]].
*** This two parter seems to have a ''lot'' of callbacks. At one point, Ben pats Rook, who doesn't get the "there there" gesture and Ben has to explain. Rook later does it back to Ben, who is annoyed by it, which amuses Rook. Now, back in ''Alien Force'', Vilgax had taken the Omnitrix and Ben patted Azmuth, saying this would be all right. Azmuth said "Did you just 'there, there' me?!" (That was from the episode "Primus," which is not considered to have happened by ThePowersThatBe, interestingly.)
** "Gone Fishing" has the villain using a Kraken similar the one in the original series to protect his lair, and bring back Magister Patelliday, a character who had appeared for ''a few seconds'' in one ''Ultimate Alien'' episode.
** "Malefactor" has a lot of them as well, including a reference to Kangaroo Commando, one of Ben's childhood heroes who showed up in one episode of the original show, and a reference to Ben's battle with Forever King Driscoll on Mt Rushmore.
** Even the ''background'' characters are consistent to ridiculous degrees. The woman seen sunbathing in "Hot Stretch" is the very same woman in "Malefactor" [[spoiler: driving the bus that Malware threw a gas tanker at to get away from Ben.]]
** "Arrested Development" has reference to both Captain Nemesis (whose building is shown and mentioned) and his robotic enemies from Dimension 12 (who show up as antagonists in the episode).
** The fact that Ben is very bad with blasters. ''Very bad''.
** The premise of "Store 23" involves Ben looking for a 23rd Mr. Smoothy, something that he said he was going to do in "Blukic and Driba go to Mr. Smoothy".
** In "Store 23," we see a poster of Pax from "Have I Got A Deal For You." Coincidentally or not, Blarney T. Hokestar was in this episode; "Have I Got A Deal For You" was his first (and only previous) appearance.
** Also in "Store 23", one can guess the [[BigBad Intellectuary's]] identity if they've seen ''Secret of the Omnitrix'' - [[spoiler: his appearance is almost identical to the suit Azmuth wore for his first scene in that movie.]]
** In "Special Delivery," villains (and a couple non-villains) from all across franchise history appear at Psyphon's auction. Some of them are ultra-obscure; you'll find yourself saying "hey, it's that guy from that one episode's cold-open waaay back in the original series." Some people ''literally'' have more screentime in this episode's crowd scenes than in their original appearances. A decent number of them even get to take part in the fight for the dwarf star, though most don't speak 'cause all their [=VAs=] being there at once would get expensive.
** ContinuityPorn: A lot of the {{Continuity Nod}}s, cameos and others don't make much sense or don't bring anything to the story, such as Psychobos showing up at Psyphon's audience in "Special Delivery", Exo-Skull (a guy from the Ben 10,000 original future) making an appearance, or the Kraken being used as a watchdog for space pirates (despite not being portrayed as an alien in his original appearance). This as a whole give you the feeling the writers are just giving those cameos to please the fans.
* CoolBike: Ben's motorcycle, the Tenn-Speed.
* CoolCar: Double-subverted; when Rook is showing his vehicle to Ben we first see a badass-looking green and black monster truck, only to learn it's a different car and Rook's actual ride actually is the [[RealVehicleReveal old, silly-looking truck behind it]]. Then Rook reveals it's only in camouflage mode and can turn into a powerful, heavily armed, spaceship-like vehicle.
** Kevin's car has an indestructible Tetramand-made engine block, which is why Kevin has always been able to repair his car despite the constant abuse it suffers.
* CreatorCameo: In "Have I Got A Deal For You", Hokestar borrows a scooter from "Y-It's Scooter Rentals". "Y-It" is a variation of the art director's name, Derrick Wyatt.
** Wyatt appears as a Galvan in "Trouble Helix."
** These are everywhere. Blukic and Driba are named for Butch Lukic and Dan Riba.
** When Ben is flashing back to his unintentional break-up with Julie, he can be seen battling against a Sumo Slammers player with the screen-name of "Derrick W."
* DatingCatwoman: Ben and Ester...at least from Rook's point of view.
** Due to the influence of the Incursean DNA, Ben develops an attraction to Attea when he transforms into Bullfrag. The feeling is mutual.
* ADayInTheLimelight: "Blukic and Driba Go To Mr. Smoothies" revolves around the titular duo, giving Ben and Rook a side plot.
** Magister Patelliday appeared ''very'' briefly in ''Ultimate Alien,'' then made a couple cameos in the ''Omniverse'' premiere, and then "Gone Fishin'" came along. We find out he's an old buddy of Grandpa Max and [[BewareTheSillyOnes very good at what he does]] even as his "[[Series/TheAndyGriffithShow Barney Fife]], but as an alien fish" personality is brought into full focus (the homage was there before, but barely getting a sentence or two meant it was "hey, he sounds kinda like somebody I've heard befo- never mind, he's gone.") It may have to do with the tone shift; in the DarkerAndEdgier ''Ultimate Alien'' series he'd not fit in, but ''Omniverse'' is--
* DenserAndWackier: Even the original show, while light-hearted and often comical, usually kept a more or less realistic setting. This show, on the other hand, isn't afraid to get downright silly on occasions for the sake of RuleOfFunny ({{LEGO}}-based aliens, the Anihilarg, some of the alien civilians...).
* DestructiveSavior: Ben, to the point a merchant was willing to endure blackmail from aliens criminals rather than call for his help.
** Mr. Bowman reveals that Ben has a long-standing habit of accidentally trashing his car, and had earlier said the same was true of his store. A truck of his is actually ''in orbit'' thanks to Ben. [[spoiler: Until it ''came back down'' thanks to Ben. On Bowman's house.]]
** [[spoiler: To be fair he wouldn't have known if he had knocked the car out of orbit back into his house.]]
* DetonationMoon: [[spoiler:Malwave blows up Galvan B, Galvan Prime's moon and home of the Mechamorphs. They put it back together once they're restored to normal.]]
* DeusExMachina: [[spoiler:Ben suddenly reacquiring Feedback after making peace with himself and defeating Malware.]]
* DiabolusExMachina: Khyber's dog has demonstrated predator forms for Heatblast, Stinkfly, Armadrillo, and Crashhopper. Guess which aliens the Omnitrix keeps giving Ben?
* DiminishingVillainThreat: Zombozo, to a minor extent; while he always was a minor villain, his appearances in both the original series and UA portrayed him as walking horror and a competent Gang leader with good scheming skills, respectively. ''Omniverse'' has him attempting [[AndThatsTerrible a brain robbery]] alone, portrays him as much more wacky and merely has him defeated in the first episode's BatmanColdOpen, making it the first appearance where he isn't dangerous.
** "Special Delivery" hits ''several'' villains hard with it; a lot of the villains that appear in this episode (Psyphon, Fisttrick, Trumbipulor...) had been previously shown to be big threats that could cause trouble to Ben each of their own. Here, they ''all'' team up against Ben, and [[ConservationOfNinjutsu he basically mops the floor with them]].
* DisneyDeath: Inflicted by [[spoiler:Malware]] to [[spoiler:''the entire Galvanic Mecamorph species''.]]
* DivergentCharacterEvolution: Perhaps in response to criticisms of the lack of unique traits or qualities of some of the sequel aliens, the sequel aliens have started to be given new traits such as their own sound effects (sometimes when they're moving), a distinct quirk (Spidermonkey makes several monkey-esque chirps), or they're slightly reworked to be less of what appears to be [[{{Expy}} blatantly inspired by previous aliens]], whether in appearance or changing their powers a bit. The ones who outright have the ''same'' power have been ignored in favor of the originals (Fasttrack is out, [=XLR8=] is back). However, Derrick J. Wyatt has said Fasttrack (and some others) won't appear for the first 40 episodes, which is oddly specific if they're truly intended to be gone for good.
* DisproportionateRetribution: Mr. Baumann punishes Ben for just accidentally destroying his car, which was the result of an unprovoked alien attack. (Of course, we find out from flashbacks that Ben's DestructiveSavior tendencies have ruined his day ''a lot.'')
* DontCallMeSir: Ben isn't really confortable with Rook's formality and quickly makes use of this trope:
-->'''Ben''': "Dude. Call. Me. Ben!"
* DowntimeDowngrade: Ben accidentally and unknowingly broke up with Julie between ''Ultimate Alien'' and this series.
* DragonAscendant: Psyphon, who was TheDragon to Vilgax in the AF/UA era, is first seen starting a business of his own.
* EarlyInstallmentWeirdness: In the first episode, Khyber whistles with his lips instead of his neck-holes, Rook uses contractions (though is still quite formal), and Pakmar isn't a ThirdPersonPerson.
* EasilyForgiven: The Kraahos get away with their quite dangerous actions with only having Esther as their leader as punishment. Even after that, a few are still sneaking around committing crimes.
* EpicFail: Ben learns the hard way that LEGO does not make a good net.
* EstablishingCharacterMoment: Rook's introduction has him take out three alien criminals, showcasing that he's very effective, but the scene afterward showcases his social awkwardness (in that he tends to take things very literally, and not being able to understand sarcasm).
* EverythingsBetterWithPrincesses: Subverted with Princess Attea and Princess Looma Red Wind.
* EvilCounterpart: Khyber has shades of this; he uses a device similar to the Omnitrix to turn his pet into various predator monsters.
** In "Store 23", Tetrax and Azmuth are both villains that Ben 23 battle. [[spoiler: Subverted when Ben 23 finds out that they aren't evil and just wanted the Omnitrix back since Ben 23 wasn't using it responsibly. Also with them is Sevenseven's good counterpart.]]
* EvilIsCool: In-universe: Ben comments that Pyronite Psyphon looks "kinda cool."
* ExpositoryThemeTune: The theme song explains the franchise's entire premise of VoluntaryShapeshifting {{Henshin|Hero}} KidHero Ben [[SavingTheWorld saving the world]] from the forces of evil.
* FantasticSlur: In "Hot Stretch", Seebik refers to non-Kraaho lifeforms as "cold cuts" (Kraahos being creatures who require vast amounts of heat to be comfortable).
* FastballSpecial: Ben and Kevin utilize this when chasing Zombozo.
* {{Flanderization}}: combined with TookALevelInJerkass when it come to 10 years old Ben. While he always was immature and obnoxious in the original show, his ''Omniverse'' portrayal takes it UpToEleven. He actually succeeds in being ''worse'' than 15 years old Ben was in season 3 of ''Alien Force''.
** To an extent, 16 years old Ben is portrayed as much more [[TookALevelInDumbass bumbling and clumsy]] than he was in the two previous sequels, and has big moments of Jerkasserie as well; the worst being when he took credit for Rook's idea in front of Max in ''Predators and Prey''.
** The ''Omnitrix'' itself was flanderized: its tendencies to give Ben the wrong alien are raised to such a level that it's a surprise when it actually gives Ben the alien he wanted.
--->'''Rath:''' "[[CatchPhrase LEMME TELL YA SOMETHIN']], NEW OMNITRIX THAT KEEPS TURNIN' ME INTA THE WRONG THING - ''YOU KEEP TURNIN' ME INTA THE WRONG THING!''
** The Incurseans went from merely ''looking'' like anthropomorphic frogs in the ''Alien Force''/''Ultimate Alien'' era to having actual frog-like quirks and tongues in this series.
** Dr Animo's [[EvilIsHammy hammyness]] and LaughablyEvil tendencies are raised to even wackier level than they were in the original show, to the point he ends up invoking classic villain stock phrases.
** Max's LethalChef tendencies have taken such an extreme that every time we see him in present day, he is cooking something weird.
** [=XLR8=] was Ben's go-to speedster in the original series, but spoke at a normal pace and only moved quickly when he wanted to. Every time he appears in a young Ben flashback here, he's downright hyperactive.
* {{Foil}}: Ben has [[GenreSavvy lots of experience]], but little formal training. Rook has had extensive Plumber training, but no firsthand experience fighting villains.
* {{Foreshadowing}}: "It Was Them" mentions as a sidenote of a force field that should have stopped Animo escaping, but isn't paid proper attention to. It then becomes a major point in "Outbreak".
** Billions Tower is seen in "Malefactor." We meet Billy Billions in the very next episode.
** In "Gone Fishin'", the guy listening to the radio hears about Ben sending the Robots from Dimension 12 back where they came from. A few episodes later in "Arrested Development", we find out why they're back in town.
** In "Blukic and Driba go to Mr. Smoothys," Ben says he's been to all 22 Mr. Smoothy's locations... and then sees on his computer that there's a 23rd that wasn't there last he knew, and he'd like to go check it out someday. "Store 23" is about, well, store #23, and there's a good reason why [[TheLittleShopThatWasntThereYesterday it wasn't there yesterday]].
** Most episodes involving a flashback to Malware in the past are in an episode where Khyber the Huntsman appears in the first ten episodes. [[spoiler:"Predators And Prey" reveals that they're coworkers.]]
** One of the villains at the dwarf star auction in "Special Delivery" is a woman dressed like a cat. This character (Nyancy Chan) would later re-appear as the villain in the {{Batman Cold Open}}ing of the episode "Tummy Trouble" (though that could be to episodes occasionally airing OutOfOrder).
* FossilRevival: Psychobos obtains DNA from a skeleton of an extinct Galvan predator in order to add it to the Nemetrix.
* FreakyFridayFlip: 16-Year-Old Ben and 11-Year-Old Ben switch in "Ben Again".
* FunnyBackgroundEvent: One episode has Hokestar's DumbMuscle attempt to be restrained by the Plumbers while Max talks to Ben and Rook on his badge.
* TheGreatestStoryNeverTold: At the end of "So Long and Thanks for the Smoothies", Ben finally proves to Rook that Alien X is real, takes control of Alien X and rebuilds the ''whole'' universe. As it was restored to its state from ''before'' the Annihilarrg went off (lest it just be destroyed again), nobody, Rook included, remembers.
** In "Blukic and Driba Go To Mr. Smoothy's," the big battle is the B plot while the subject of the title is the A plot. In the end, ThoseTwoGuys save the day from behind the scenes by reprogramming the robot rats to turn on each other.
* GreenEyedMonster: Billy Billion, who's entire motivation is jealousy Ben got more attention than him in school (and also, revenge for being trapped in Dimension 12, but that was his own fault). Ben calls him out on it.
* GoMadFromTheIsolation: Defied when Billy Billion's telling Ben about his time in Dimension 12.
-->Billy: ''You know the worst part?''
-->Ben: ''That five years of isolation drove you crazy?''
-->Billy: ''That five years of isolation drove me--NO!''
* GoodCounterpart: [[spoiler: Dimmension-23 Seven-Seven, is revealed to be one at the end, working for Azmuth and trying to get the Omnitrix back. The episode ends with him and Dimmension-23 Tetrax drinking Smoothies and waving good-bye to regular Ben.]]
* HappyFunBall: The Annihilarg sure doesn't look or sound like a universe destroying doomsday weapon.
* HeroicBSOD: 11 year old Ben gets one [[spoiler:after Malware destroys Feedback]].
* HoistByHisOwnPetard: [[spoiler:Feedback incapacitates Malware by draining him of power in "Showdown Part 2", just like Malware did to many of his fellow Mechamorphs when Ben first met him 5 years ago.]]
* HowDoIShotWeb: Ben has some difficulties learning how to use the new Omnitrix, resulting in him almost always turning into the wrong alien the same way he did when the Omnitrix was damaged.
** He had difficulties figuring out how Bloxx, Gravattack, and Ball Weevil work.
* HuntingTheMostDangerousGame: This is a large part of Khyber's motivation to go after Ben.
* IShallTauntYou: Used by Ben against Khyber in "Of Predators and Prey part 2":
-->'''Ben''': If you're so great how come it took you ''five years'' to capture me, huh? It took [[ArchEnemy Vilgax]] like ''five minutes''!
** Blucik and Driba use this against Psychobos in "Frogs of War" part 2.
-->'''Driba:''' The dumbest Galvan is still smarter than any Cerebrocrustacean!
-->'''Blucik:''' [[HeroicSelfdeprecation And we ought to know.]]
* IWorkAlone: Ben has this attitude in the pilot episode, not accepting Rook's partnership (possibly because he feels like he is trying to replace Gwen and Kevin).
** Comes back in "Of Predators and Prey" with Ben insisting he doesn't need help. He's even worse about it in the present day than he is in the flashback. [[spoiler: The infighting and Ben's storming off alone is all a show to lure Khyber.]]
* IfIHadANickel: Ben's response to Khyber saying he was the last person Ben would ever see.
* InsistentTerminology: As always, Ben dislikes having the Omnitrix referred to as a weapon.
* InsultOfEndearment: Before parting ways in the first episode, Ben and Gwen use their old insults for each other (Dweeb and doofus) one last time.
* IntercontinuityCrossover: The upcoming "T.G.I.S." will be one with TheSecretSaturdays.
* ItsBeenDone: in his ReasonYouSuckSpeech to Billy Billion, Ben points out how almost all his plans and inventions have already been done by previous villains.
* {{Jerkass}}: Mr. Baumann. Made evident in "Special Delivery" when he can't accept that not every instance of destruction is Ben's fault. He even goes as far as to force Ben to make deliveries without using the Omnitrix.
* JustEatHim: [[spoiler: How NRG disables the Fusion Engine.]]
* KarmaHoudini: Aside from being forced to make Ester their leader, the Kraahos don't get punished for trying to kill Ben and Rook in cold blood numerous times and for dumping several tons of molten lava onto Bellwood. The latter action is shown to destroy several buildings and a lot of property in general, as well as probably ''killing'' people in the city (and even if it didn't, they sure wouldn't have mind). Meanwhile, characters who commit lesser crimes are arrested and imprisoned by the Plumbers without hesitation.
** Also, Blucik and Driba. While they are not evil, they did cause a large amount of problems with their stupidity and irresponsibility in "Blucik and Driba Go To Mr. Smoothie", by neglecting their duties and leaving with no permission just to find a a Mr. Smoothie. They themselves expect to be fired after this. Not only do they get away with it (they are still in the Plumbers in following episodes), but they actually get ''rewarded'', since Ben gets them a Smoothie.
* KnightOfCerebus: Much like ''WesternAnimation/TeenTitans'', most villains are rather portrayed as comedic or silly, but when it comes to the main villains:
** [[EgomaniacHunter Khyber the Huntsman]] basically is an alien ''SerialKiller'', and is portrayed as menacing with little comedy derived from him.
** Malware appears to be heading in this direction, starting out in ''Omniverse'' with his general flaws (his ego, mostly) as a villain being showcased in each episode he's starred in ("The More Things Change Part 1" in flashback, and "Trouble Helix", his origin story), making him merely appear to be a one-off, humorous villain, until [[spoiler:"Of Predators And Prey" reveals that he's since teamed up with Dr. Psychobos to work on the Nemetrix, and shows that he is not above forcing people (the one being shown to be Phil, [[TheBusCameBack a character that has not appeared in the franchise since the first series]]) to become test subjects, with none of the scene being played for any sort of humor]]. And even Dr. Psychobos, though quirky, is a rare villain to actually ''[[TheBadGuyWins win a round]].'' Basically, the ''main'' villains of this series are nothing to laugh about.
* KnowsAGuyWhoKnowsAGuy: This is Fistrick's explanation for how he learned of Ravonnah and the Amber Ogia.
* KnowWhenToFoldEm: Ben and Rook come across a trio of tiny, crab-like aliens making a meal out of a car. Before Ben can even transform, they recognize him and hastily try to reassemble the damaged vehicle.
** Most of the major arc villains share this trait, as Khyber just calls off his pet when he realizes Ben and Rook outnumber him, [[spoiler:Malware ran off in the first episode because, as ''Predators and Prey'' implied, he already got what he needed]], and Psychobos doesn't even ''bother'' to stay after he steals a part of the Omnitrix's code.
* LampshadeHanging: The young Ben uses Feedback in practically all his appearances. When he uses him in "Of Predators and Prey, Part Two", young Gwen asks "Don't you ever get tired of that alien?"
** "Showdown", the final episode for the show's second arc [[OutOfOrder before being pushed back]], shows Ben's ridiculously frequent use of Feedback and the characters pointing out how, in context, certain times using Feedback make no sense (the first example being a car chase where [=XLR8=] would probably have been the best choice. Feedback is used instead, [[RuleOfCool and running on power lines]]. The second example has him ''being used to put out a fire''.).
* LawyerFriendlyCameo: One of the alien extortionists is [[WesternAnimation/ChallengeOfTheGobots Crasher]].
* LighterAndSofter: Character designs are far more stylized than ''Alien Force'' and ''Ultimate Alien'', and the villains considerably more [[CardCarryingVillain over the top]]. Ben's increased GenreSavvy meanwhile [[ForegoneConclusion diffuses the tension]] in many of the dangerous situations he ends up in.
* LookBehindYou: One dirty trick even Rook won't fall for in the first episode. Unfortunately, the chicken is right.
* LoopholeAbuse: [[spoiler:Psychobos traps Azmuth in a room and made sure he couldn't teleport himself outside. Azmuth decides to teleport Ben ''inside'' to help him.]]
* MadeOfIndestructium: Tetramands are known for building objects out of this. We find out this is how Kevin's ChronicallyCrashedCar continues to bounce back after its constant abuse.
* MenOfSherwood: The Plumbers
* MetaphorIsMyMiddleName: Rad Dudesman says this three times throughout ''Rad''. The first time it's "Trouble", the second time "Danger", and the third time "Profit". [[spoiler:It's revealed at the end of the episode that those really are his middle names.]]
* MonsterClown: Zombozo, even being called such by Ben.
* MoodWhiplash: "Store 23", so much. The episode starts out like a goofy one, with Ben going to look for a Mr Smoothie with Blucik and Driba. Several goofy characters, such as Professor Hokestar and Liam, shows up, and Ben ends up in an alternate reality where his other self became a reality show star. Then, toward the end of the episode, we learn that [[spoiler:in this reality, Max ''died'' before Ben got the Omnitrix. As a result, he never had his grandpa to guide him and became an irresponsable, even more narcissic and obnoxious hero who saw all aliens as evil. The one this Ben thought to be the BigBad actually was his reality's Azmuth, trying to get back the Omnitrix before he ended up killing someone. And to make matters worst, this reality's Ben almost ends up ''[[MoralEventHorizon ripping his Azmuth in half]]''.]]
* MoralityChain: Max is the only reason that Ben hasn't become a living advertisement for business. Dimension 23's version of Ben doesn't have Max, making him become what Ben would be without his grandpa. [[spoiler: Ben later fixes this by giving Ben 23 a new morality chain in the form of Dimension 23's Azmuth.]]
* MultipurposeMonoculturedCrop: Taken to ridiculous extremes with the fruits cultivated by Revonnahganders on their planet. Seriously, not only are those things used by the population for almost everything, from food to building to drink, but they can also be used to power DeathRay{{s}} capable of destroying entire planets and develop MindControl serum.
* MythologyGag: Flashback episodes about 10 years old Ben have Max using a weapon looking similar to his robotic arm from "Ben 10,000".
* {{Nerf}}: Certain aliens lose abilities for varying reasons, such as Chromastone's ability to fly (likely to make him less redundant), Way Big's super speed (probably to make him less broken), and Goop's HollywoodAcid abilities (also probably to make him less broken). WordOfGod [[HandWave says that in the case of Chromastone and Goop, those were caused by glitches in the previous Omnitrix]]. Never mind that Ben learned Chromastone could fly in the first place by ''seeing Sugilite, the one the Chromastone DNA sample came from, fly.''
** Humungousaur doesn't demonstrate his size-changing ability, and is more likely to suffer TheWorfEffect in favor of making Ben use more inventive solutions than hitting things. This after Ben spent the whole series to that point trying to re-unlock it. His size-changing ability, however, has not appeared for quite a while in previous sequels anyway, being used less and less as the show went on.
* NeverMyFault: Billy Billions wants revenge on Ben for upstaging him in school and him being trapped into Dimension 12 (which stopped him from aging)... except Ben had no idea the kid even ''existed'' and Billy ended up trapped in Dimension 12 when his own attempt to send ''Ben'' there was rebounded off Diamondhead (something Ben didn't even know ''happened'').
* NiceJobFixingItVillain: In "Special Delivery", Psyphon could have had his dwarf star back without any trouble if he had just returned the fish Ben needed to deliver. Instead, the idea that Ben would trade something so valuable for something so worthless is so confusing to him that he feels the need to voice the thought, thus explaining to Ben why it is valuable and making him refuse to return it.
** He also at one point had the star while Ben was busy with the other villains. He could have just walked away with it then.
* NoodleIncident: Ben was trapped as a different alien every week for a month, resulting in Grandpa Max being unable to sleep. Nothing is ever disclosed about this.
* NotGrowingUpSucks: Being trapped in Dimension 12 has permanently halted Billy Billions' aging process, trapping him in his 11-year-old body. He tries to exact revenge on Ben by making him suffer the same fate.
* NotMeThisTime:
** The Megawhatts appeared as trickster antagonists as early as the first season of the original series. A flashback in "A Jolt From The Past" reaffirms this. But after a fight and undramatic chase scene in the present day, it's revealed that this time, they're the victims.
** After repeated attacks from different forms of Khyber's shapeshifting pet (thus believing it to be many animals), Ben assumes Dr. Animo must be behind all the mutant animals. While Animo has in fact escaped confinement, he's busy with his own plans and hadn't planned on killing Ben until after he finished Phase 1. The pet shows up again to confirm that fact.
* ObliviousToLove: It takes all of "Hot Stretch" for Ben to realize that Ester's attraction goes beyond mere fangirlish admiration. Even ''Rook, of all people'' can see it.
* OfficialCouple: Still Gwen and Kevin, though [[spoiler:Julie and Ben are now broken up, and it seems Ben and Ester are becoming this]].
* OffscreenTeleportation: Ben as Diamondhead in "Evil's Encore" does this when hanging from a ledge. He somehow made it over to the ''other'' ledge.
* TheOnlyOneAllowedToDefeatYou: Khyber has twice directed his pet to defend Ben against his adversaries, because Khyber wants Ben for himself.
* OutOfCharacterAlert: Ben and Rook realise something is amiss with Rook's family when they start talking about how inferior Galvans are, and when Rook Da desn't show disdain for Ben or for Rook being a Plumber (While using contractions, no less). They don't know for sure until Da [[spoiler: uses Dr. Psychobos' CatchPhrase]].
* OutOfOrder: Several episodes have been aired out of order, such as "Store 23", which is chronologically set after "Showdown" yet aired before it.
* PaletteSwap: In keeping with the Omnitrix changing Ben's clothes into clothes for the aliens, Ben 23's aliens mostly change the green parts (or, in the case of Shocksquatch, the black fur) on Ben's aliens to a light blue. We also get an arguably more benign alternate Sevenseven in white. (Arguably because who his boss proves to be notwithstanding, he ''did'' put a ''bomb'' on alternate Ben's arm.)
* PintsizedPowerhouse: Princess Looma, in context anyway. While larger than any human, she's ''the'' daintiest Tetramand ever seen, yet also the strongest one ever introduced. She can deliver painful, crushing hugs to her father, Gar, who is the hugest walking tank of a Tetramand we've ever seen, and he considers her his best warrior.
* PlotArchaeology: Not only do we have flashbacks to the original series era, elements we haven't seen in ages come back, like the Megawhatts. Also, in the original series' Ben 10,000 future episodes, there was an alien named Articguana that future Ben had. In the present, when lava threatens the whole city, Ben unlocks Articguana for the first time. One of those future episodes introduced Ben's son Ken. Ken was going over the list of aliens in his own Omnitrix, and said "Toepick? That one even grosses me out!" and had it replaced with Grey Matter. Well, the subject of that ''one offhand line'' in a 2007 episode is going to show up at some point, and there are even plans for a toy of him. Also, ''Phil'' (see episode ''fourteen'' of the original series) being one of Malware's test subjects. Anything's fair game!
** The appearance of a Krakken in "Gone Fishin'?". It was first (and until now, last) seen in episode ''three'' of the original series.
* PoliceAreUseless: The real cops don't really stand a chance against the Aliens or humans that Ben faces. The Plumbers manage to avert this, with Max or Ben leading them, they take down Psychobos's minions, and the escaped prisoners in Outbreak. Patelliday, despite his comical flaws, frees himself from confinement, and helps take down the VillainOfTheWeek.
* PortalCut: As part of the RunningGag involving Ben destroying his property, Pakmar's truck is cut in half when Ben, lifting it as Humongosaur, is teleported to Galvan Prime by Azmuth.
* PoweredByAForsakenChild: A gang steals alien technology then kidnaps Megawhatts to power said technology.
* PowerUpFood: Peanuts are this for Trumbipulor's race, causing them to grow to giant size.
* {{Pun}}: Fourarms picks up a tree and uses it as a club.
--> '''FORE!''' ...Arms.
** Used subtly by Paradox to tell Ben that the [[MacGuffin chrononavigator]] [[spoiler:was in his severed bionic hand]].
* PunctuatedForEmphasis: Backfires on Ben. He tells Rook "Dude. Call. Me. Ben." which Rook misconstrues as a cue to talk in the same manner.
* PutOnABus: Gwen and Kevin leave Bellwood at the beginning of the show. Gwen to go to college, Kevin to live near Gwen.
** CommutingOnABus: They stop by for a visit.
* QuitYourWhining: A particularly funny example from when Ben is turned 11 again, and goes to Grandpa Max for help.
--> Max: ''I know that you're worried, but we're doing everything possible to help. I promise it will be okay.''
--> Ben: ''...Come on Grandpa, I just look like I'm eleven. But I'm still sixteen in here. *taps head*''
--> Max ''Well then, in that case, stop whining and act your age.''
* TheReasonYouSuckSpeech: Ben gives one to Billy Billions, pointing out that all of Billy's 'inventions' are based off someone else's and Billy is simply a SpoiledBrat and GreenEyedMonster who is the cause of all his own suffering.
* RecurringExtra: Many. It's easiest to spot with the aliens in Undertown because of the varied designs. Almost all of the JokeCharacter Omnitrix aliens Ben turns into in "Outbreak" can be seen (with different colors and no Omnitrix symbol) in Undertown whenever we see it, even ''before'' Outbreak (The Worst is one of the first Undertown aliens we ever see.) The [=XLR8=] girl who takes a picture of Ben in "Store 23" is one of the group of members of that race playing on the streets in "Hot Stretch," and ''she has a name now.'' ([=K8E=], presumably pronouced Katie.) Of course, it's easier to reuse models for extras, so there are bound to be a few designs seen twice. At the Plumber base, you'll always see one human woman, and the small Molestache alien (he lacks the 'stache in original-series-era scenes!).
* RedemptionRejection: Azmuth attempts to reason Malware briefly in ''Showdown Part 2'', promising to work to heal him. Malware rejects it.
* RememberTheNewGuy: A lot of characters supposedly from Ben's past are introduced in the flashbacks despite never being mentionned ever. Those include Feedback, Malware and Billy Billion. Most of them are justified, though: Feedback and Malware apparently left Ben traumatized to the point he tried never speaking of them again (this is later revealed to have been Malware [[spoiler:destroying Ben's Feedback form in a rather horrific way]] on top of the other horrific things he did), and he wasn't aware of Billy Billion's existence at the time.
* {{Retcon}}: The producers mentioned they are planning to retcon some elements from previous shows, such as Primus or Gwen's Anodite powers, for a better continuity.
** CosmicRetcon: All retcons are justified in-story as a result of Ben recreating the universe with Alien X in "So Long and Thanks for all the Smoothies". While he was able to essentially remake everything and everyone, he didn't do it entirely correctly, and thus people, places, and events have now been altered or no longer exist.
* ReversePsychology: Ben asks the Omnitrix for Humungousaur when he really wants Wildmutt. Amusingly, it works.
** It does not, however, in the next episode. Must've been the UnspokenPlanGuarantee of the first one.
* {{Revision}}: There will be episodes about Ben when he was 11 years old, which are new adventures, despite taking place in the past.
* RevisitingTheRoots: [[WordOfGod According to its creators]] this is an attempt to return the franchise as a whole back in alignment with the original ''{{WesternAnimation/Ben 10}}'' series. ''Omniverse'' tones down the DarkerAndEdgier aspects and drastically changed the art to a less realistic style as compared to ''[[WesternAnimation/Ben10AlienForce Alien Force]] ''and ''[[WesternAnimation/Ben10UltimateAlien Ultimate Alien]].'' The show frequently has flashbacks to adventures of 10 year-old Ben and reintroduces characters and aliens seen in the original series.
* RidiculouslyCuteCritter: The Screegit... until it transforms into a hulking monster when exposed to nitrogen.
** Ball Weevil, by Ben's own admission.
* RubberMan: Ester's species. She's a HalfHumanHybrid but still the same powers.
* RunningGag: The Omnitrix hasn't let Ben use Humoungosaur yet, which annoys him greatly.
** It finally does when he tells it to "surprise him." Go figure. [[spoiler: It goes on to do him little good, and he wins the day with ''Grey Matter.'']]
** Ben has a tendency to get covered in some goo or another.
** Pakmar... Has a lot of bad luck with Ben's clumsiness
** This series continues the tradition of Mount Rushmore getting destroyed in some way.
* SeriesContinuityError: When we first met Mr. Baumann in ''Ultimate Alien'', he was rather friendly and eager to see Ben, saying he had seen him since he was a child. In ''Omniverse'', Baumann has a long history of being "tormented" by Ben, and one of the incidents involving the destruction of his beloved car took place during the previous series... ''before'' they could have met again, considering said incident involved [=DNAliens=] from ''Alien Force''.
** Gwen states in "Showdown part 1" that Ben's only form to ever defeat Malware was Diamondhead. Flashbacks show Ben defeating Malware with Feedback right in the first episode. [[spoiler:Granted, he actually retreated of his own will because he had got what he wanted, but Gwen wasn't supposed to know that.]]
** In "Predators And Preys", Khyber tries to transform his pet into Grey Matter's predator, but is interrupted by Rook. Come "Showdown", we learn the Nemetrix ''didn't have'' a Predator for Grey Matter back then: the only Galvan predator, Omnivoracious, is extinct in the present timeline, and is only acquired in part 1 when Khyber sampled it from a fossilized skeleton.
*** Granted, he didn't have Grey Matter's only '''Sucsessful''' Predetor, but still, all of the other ones were defeated by cunning, inginuity and (if you mind the pun,) a little Grey Matter.
** In "Frogs of War", the population of Undertown evacuates right through the street, exposing themselves and Undertown to the general public. Everyone acts as if both are a big revelation, despite the fact that not only have aliens been routinely invading for years, but by this point in the series live openly among humans and can be seeing actually playing in the streets in some episodes. This is a particularly jarring example as it is quite literally part of the basic premise of the show.
** Billy Billion is introduced as being [[RememberTheNewGuy one of Ben's classmates when he was 10]] who was jealous of Ben's popularity at school. If you ever watched the original show, you know that Ben actually was incredibly unpopular at school, and only got famous starting with Ultimate Alien. Fans usually tries to rationalize it by seeing the flashback as warped by Billy Billion's vision of things, but this is at no point stated explicitly in the episode, and if it was true, you gotta wonder [[FridgeLogic why Billy would develop such paranoia toward an unpopular kid instead of a popular classmate]].
* SeriesHiatus: Currently undergoing one after the end of the third arc.
* ShameIfSomethingHappened: The protection racket being used on the alien shopkeepers of Bellwood.
* ShoutOut:
** [[WesternAnimation/TransformersAnimated Grimlock's sword and Lockdown's hook]] are on Khyber's wall in his ship.
** One of the aliens terrorising the store toward the end of the pilot is clearly based on Crasher from ''WesternAnimation/ChallengeOfTheGoBots''.
** The episode "It Was Them" is about [[Film/{{Them}} giant rampaging ants]].
** In "Predator and Prey," the alien Max is cooking looks like a facehugger. It even lunges at Ben's face!
** Malware's black and red design with a yellow spot may have been influenced by ''Anime/PantyAndStockingWithGarterbelt''.
** In the pilot there's graffiti reading [[WesternAnimation/RegularShow Reg Show]] in the tunnels.
** There are three other Earth species on the Omnitrix: Two of them being [[Franchise/TheHitchhikersGuideToTheGalaxy dolphins and lab mice]].
** One of the signs in Bellwood resembles a yellow [[VideoGame/DragonQuest Slime]].
** As is tradition with [[{{Expy}} Paradox]], the words [[Series/DoctorWho "Spoilers" and "Time War"]] crop up in "Ben Again."
** WesternAnimation/CowAndChicken appear as alien customers at a interdimensional Mr. Smoothy in "Store 23."
** Mr. Baumann is a [[ComicStrip/DennisTheMenaceUS Mr. Wilson]] expy. Five-year-old Ben even gets to say "MR. BAUUUUMAAAANN!" in the traditional Dennis voice.
** One of the aliens in "Special Delivery" is a parody of WesternAnimation/{{Thundercats}}. He also [[Film/ThePrincessBride paraphrases Inigo Montoya's]] [[MyNameIsInigoMontoya fam]][[YouKilledMyFather ous]] [[PrepareToDie line.]]
** The predator counterpart to Humoungosaur is based on the Ultimasaurus from the ''Franchise/JurassicPark Chaos Effect'' toyline.
** The Incursean invaders from "Tummy Trouble" are from the [[http://en.wikipedia.org/wiki/The_Celebrated_Jumping_Frog_of_Calaveras_County Celebrated Calaveras]] Legion.
** In "Frogs of War" Ben does the "boring conversation" bit from {{Star Wars}} when impersonating the Incursean Emperor. He even destroys the console like Han Solo did.
** Two aliens are a [[ShoutOut shout out]] to Billy and his Dad from Billy & Mandy. They are even called Maxatomars and are said to be the funniest things in the universe.
** The GentleGiant To'kustars are a shout out to the tokusatsu genre, in particular a certain {{toku}} star known as {{Series.Ultraman}}. He has a Japanese accent in this series. One of the mutant To'kustars that fights Ben looks like Scanty from Anime/PantyAndStockingWithGarterbelt.
** In "Evil Encore", when one of the robot drones searches for Ben only to find him missing, it makes the ! sound from the ''VideoGame/MetalGearSolid'' franchise.
* ShyFingerTwiddling: Attea does this when Ben ([[spoiler: as Bullfrag]]) flirts with her.
* SmugSnake: Billy Billion.
* SnakeOilSalesman: Professor Blarney Hokestar. MeaningfulName, much?
* SpockSpeak: Rook's entire race speaks in this manner. Lampshaded in "While You Were Gone" when they figure out his father has been brainwashed because he starts to use contractions.
* SpotlightStealingSquad: A lot of fans complained that Kevin and Gwen were removed because they supposely were this to Ben, only to replace them with Rook, who is so awesome he ends up stealing Ben's screentime even more. [[http://th09.deviantart.net/fs70/PRE/f/2012/364/c/5/the_big_change_by_silverlady7-d5pot90.jpg This pic]] says it all.
** Later episodes, possibly in response to this trope, either show Ben shining more or keep Rook out of the episode entirely.
* TheStarscream: After relinquishing leadership of the Kraaho to Esther, Seebik appears in "Special Delivery" vying for Psyphon's dwarf star core. When Ben asks him if Esther knows what he's doing, he replies "I hope not", implying that he is working behind her back.
* StepfordSmiler: possibly Ben 23; [[spoiler:he goes around the whole episode acting immature and joyful, but, at the end of the episode, after a short tantrum when Azmuth removes his Omnitrix, he [[HeroicBSOD breaks]] and admits he misses his grandfather.]]
* TailorMadePrison: In "Vilgax Must Croak", all staff and prisoners are evacuated from Incarcecon to place Vilgax there to leave the rest of his life in solitary confinement, being placed with automated machines to serve him food and leaving him no one to rule over or manipulate. [[spoiler:It doesn't quite go this way.]]
* TalkingIsAFreeAction: In the first episode, despite there being a bomb crisis with what appears to be little time, Ben and Rook talk without the bomb blowing up, even as they're disabling it.
* TemptingFate: Ben boasts that he doesn't need help. Specifically, while flying as an alien. This goes about as well as you'd expect.
** Becomes a running gag in "Outbreak", with Rook saying things like "It can't get any worse", to Ben's chagrin.
** In "Showdown, Part 1", when using Humongosaur to lift Pakmar's truck, Pakmar demands he put it down before he causes any more damage. Ben dismissively states that such a thing is basically impossible... right before Azmuth teleports him to Galvan Prime and takes half the truck with him.
** Ben 23 does this at the end of "Store 23". Lampshaded non-verbally by all present.
* TimeTravelTenseTrouble: Paradox mentions this when first meeting past Gwen and Max. 11 year old Gwen later finds she also has trouble. Further trouble with tenses came when 11 and 16 year old Gwens cast a spell together.
* ThirdPersonPerson: Pakmar, at least when referring to his shop. Rath also keeps this VerbalTic.
* ThroughHisStomach: Rook finally wins Ben's respect by bringing him food he can actually enjoy. In case you don't know, [[ContinuityNod it's chili fries.]]
* TimeCrash: Eon very nearly destroys reality with one in "Ben Again".
* TimeSkip: Takes place after some point in ''Ultimate Alien'', as well as showing that aliens now coexist generally peacefully with the human populace.
* TookALevelInDumbass: BEN, good Lord, Ben! he makes his AF season 3 and Original Series selves look like geniuses. However, sometimes he's DangerouslyGenreSavvy.
* TrademarkFavoriteFood: Smoothies and chili fries. It's rare that Ben is seen eating without one or the other. In fact, he's so famous around the Mr. Smoothies, the clerks will even open after closing ''just for him''.
** Also, notably, we see him actually eating chili fries after his love for them was largely an InformedAttribute before (Albedo, stuck in Ben's form, is addicted to chili fries... which at the time we'd never seen Ben eat.)
* TrueCompanions: Ben's new team: Himself and Rook as time went on.
* TwoLinesNoWaiting: "Blukic and Driba Go To Mr. Smoothy" features the titular duo trying to find Mr. Smoothy, while Ben and Rook tackle Trumbipulor. The storylines intersect along the way as Blukic and Driba help them with the mission.
* TheUnmasquedWorld: Aliens now live openly among humans.
* UngratefulBastard: Mr. Baumann towards Ben. He is more concerned about the destruction of his own property rather than the evil that Ben thwarts. In fact, any time his car or his property get destroyed during an alien attack, he is often a jerk about it towards Ben, no matter how little or unintentional Ben contributes to the damage.
* VileVillainSaccharineShow: The show itself is notably DenserAndWackier / LighterAndSofter compared to the previous sequels, but its major villains are an EgomaniacHunter SerialKiller, a [[TheSociopath Sociopathic]] NotSoHarmlessVillain and a MadScientist who [[spoiler:attempts to commit a genocide of the Galvans]].
* VillainBall: Khyber attempts to make this a DefiedTrope, but Ben suckers him into it anyway. He also goes easy on Ben because he wants to personally strike the final blow.
* VillainyFreeVillain: Professor Blarney Hokestar has his Skreejit confiscated despite the fact that he was very careful in handling it, never showed any signs of mistreating it, and made every effort to contain it when Ben and Pax caused it to run amok. In the end, all Hokestar had done was the extraterrestrial equivalent of ''milking a cow''. Then again, considering he transported an alien to Earth which could become dangerous when exposed to the atmosphere, its confiscation could be likened to the restriction of ecosystem-damaging animals and plants in the real world.
* VocalEvolution: In the previous two series, Psyphon and Big Chill (both voiced by Creator/DeeBradleyBaker) sounded very calm and stoic. Here, both are more "out there", especially with Psyphon, who has become a full on LargeHam.
** Now Waybig sounds like a stereotypical 1950s Japanese movie character. Considering what he's supposed to be an [[Series/{{Ultraman}} homage to, it makes sense.]]
** A lot of characters get new speech patterns or vocal effects that are quite fitting (if sometimes leaving them sounding little like they did before.)
** Emperor Milleous (voiced by KevinMichaelRichardson) has a much deeper voice in this series than he did in Alien Force. It also has a tendency to crack while he's speaking.
* WhamEpisode: The double episode "Of Predators and Prey"; [[spoiler:Khyber finally reveals himself to Ben, but turns out to ''not'' be the BigBad, being instead TheDragon to [[TheManBehindTheMan Malware]], a villain introduced in the flashback parts, and [[EvilGenius Dr Psychobos]], a guy we had never seen before. And Khyber's ship is destroyed.]]
** "Showdown Part 1" reveals that [[spoiler:Malware pulled Feedback out of the Omnitrix and destroyed him, showing that Malware can do so much more with the Omnitrix than previously thought (he only used those abilities to switch Ben back to human form and take a sample of its code, giving a somewhat limited look as to what he could do to the watch) and justifying Ben's fear of the character.]] In addition to that, [[spoiler:Galvan B is destroyed, and it turns out Dr Psychobos intends to exterminate the Galvan.]]
* WhatHappenedToTheMouse: In the first part of "Showdown", Khyber [[spoiler:leaves Dr. Psychobos to his own predator]], and leaves. In part 2, Khyber completely disappears from the narrative, bearing no mention from anyone nor even [[spoiler:being referenced when Kevin adopts his pet]].
* WholeEpisodeFlashback: Malware's origin story in "Trouble Helix" takes the entire episode to tell. This is framed by Khyber accessing the records in the Plumber database.
* YouAndWhatArmy: Ben says this to Gar; cue to Gar's personnal fleet showing up.
* YouDontLookLikeYou: The new character designs.
** Lampshaded in an episode where Argit asks Ben if he got a haircut.
*** To be fair, Argit [[RunningGag does that a lot]].
* YourMom: During Psyphon's auction an unseen character says "Then I told Vilgax 'Know what's really scary? Your mom!'"
----