* ActorAllusion:
** Khyber. ''[[WesternAnimation/BeastWars Yeeeessss...]]''
** 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 Creator/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.]]
** The sweater Darkstar wears as [[spoiler:Dante]] is similar to one worn by [[StarTrek Wesley Crusher]].
* AdoredByTheNetwork: An odd example, since ''Boomerang'', Cartoon Network's ''vault'' channel, has slotted it in an early-evening daily slot, with extra slots on weekends. CN proper seems a bit less interested.
* AscendedFanon: It was a common idea amongst fans that Dr. Animo's middle name was "James". Come "It Was Them", Rook refers to him as "Aloysius James Animo".
* DevelopmentGag: Swampfire's new form bears resemblance to some of his original concept art.
* ExecutiveMeddling:
** Derrick Wyatt says that the tone being closer to that of [[{{WesternAnimation/Ben10}} the first series]] was an executive mandate due to the fact that, globally, the first series apparently does the best ratings-wise.
** Gwen and Kevin's "college" redesign was the only redesign they were going to get, but executives wanted them to look more similar to their Alien Force / Ultimate Alien designs for their first appearance, so they received "transition" designs for the first episode.
** Derrick designed Vilgax with his respirator from the first series, but executives discarded it because they wanted the character to emote more clearly. Derrick hopes to eventually use the respirator on the design (and given how [[spoiler:Malware]]'s design evolved...).
** Eventually the executives said there were too many alien transformations, so [[spoiler: Whampire]] is the last new alien the show is going to introduce.
** They were also at some point "mandated to have less transformations per episode going forward."
* FanNickname:
** Dimension 23 [=SevenSeven=] is now commonly nicknamed Twentythreetwentythree by the fans.
** Some fans use the term [[VideoGame/SonicGenerations Classic and Modern]] to distinguish the two [[{{WesternAnimation/Ben10}} Be]][[WesternAnimation/Ben10AlienForce n]][[WesternAnimation/Ben10UltimateAlien s]].
** Gwen's new Anodyte form has sometimes been called [[Franchise/SailorMoon Sailor Anodyne]].
* FlipFlopOfGod:
** Due to Derrick Wyatt's discord with some of DwayneMcDuffie's adds in Alien Force, some of his statements turn out like this.
*** Learning new alien's abilities. DwayneMcDuffie stated that the Omnitrix has a feature that let the bearer instantly learn the abilities of an alien they turned into (though they diverged from this rule when introducing Jury Rigg). Derrick Wyatt makes it clear that that feature is not present.
*** Goop's acid abilities. DwayneMcDuffie said that they were how the species digested food. Derrick Wyatt said that they were the result of an Omnitrix/Ultimatrix glitch, and are possessed by neither regular members of the species nor the Goop produced by the new Omnitrix.
*** Psyphon's origin. DwayneMcDuffie described him as being from one of planet Vilgax conquered, while Derrick Wyatt made a ShrugOfGod that he was possibly a cyborg or an android made by Vilgax.
** ManOfActionStudios was very clear on the fact Enoch ''did'' survive the LotusEaterMachine in his last appearance in the Original Series (though it took him several years to recover), and the sequels so far confirmed it by having him making a cameo in ''Ultimate Alien''. When asked if he would be back, Derrick J. Wyatt merely answered he was dead.
* HeyItsThatVoice:
** Derrick Wyatt has confirmed that Bumper Robinson voices both Rook and Bloxx. He's also confirmed that DavidKaye voices Khyber.
** Derrick has also confirmed that David voices Shocksquatch, who in fact voiced him in ''WesternAnimation/Ben10GeneratorRexHeroesUnited''. Also, Creator/YuriLowenthal voices Feedback.
*** Derrick has also confirmed DavidKaye will voice Cannonbolt, Creator/JohnDiMaggio will voice Humongousaur, and Creator/DeeBradleyBaker's still voicing Spidermonkey. One can imagine Dee is breathing a sigh of relief, since he's said "voicing Humongousaur hurts his throat."
** Derrick has confirmed that Creator/CoreyBurton is now voicing a new villain named Malware as well as Brainstorm. [[spoiler: Burton also reprises his role from ''WesternAnimation/TheSecretSaturdays'' as V.V. Argost.]]
** Creator/SteveBlum reprises his roles of Vilgax and Ghostfreak (both the alien form and the original), thus finally adding Ben and Vilgax to Creator/YuriLowenthal and Steve's RelationshipVoiceActor list.
** Creator/CharlieAdler is Professor Hokestar. He also [[RoleReprisal reprises]], in an unexpected cameo, WesternAnimation/CowAndChicken in "Store 23."
** TaraPlatt voices Ester, who seems to be a love interest to Ben, which ties into RelationshipVoiceActor as she's Creator/YuriLowenthal's wife.
** Alexander Polinsky ([[WesternAnimation/LegionOfSuperheroes Chameleon Boy]], [[WesternAnimation/TeenTitans Control Freak]]) is Argit.
** Kimberly Brooks ([[VideoGame/BatmanArkhamAsylum Ora]][[VideoGame/BatmanArkhamCity cle]], [[Franchise/MassEffect Ashley Williams]]) is Princess Looma and Serena.
** Creator/AzizAnsari is Billy Billions.
** Fistina, the [[WesternAnimation/ChallengeOfTheGoBots Crasher]]-inspired villain from "The More Things Change" is voiced by Morgan Lofting, better known as [[Franchise/GIJoe the Baroness]].
** In addition to reprising her role as young Ben, Creator/TaraStrong voices Pakmar and reprises the roles of Princess Attea and Lucy Mann.
** Creator/KevinMichaelRichardson reprises his role as Emperor Milleous, and also voices Snare-oh and Blitzwolfer, formerly known as Benmummy and Benwolf.
** Creator/JuddNelson is Eon and Ben 10,000.
** Gwendoline Yeo ([[WesternAnimation/WolverineAndTheXMen Domino]]) is Nyancy.
** Creator/JimCummings is Vexx, 99th leader of the Appoplexian Empire.
** Creator/TimCurry reprises his role as Joseph Chadwick, the new Forever King.
** Miguel Najera and Bettina Bush reprise their roles as Wes and Kai Green.
** Creator/ScottMenville reprises his role as Jimmy Jones, and also voices Spanner.
** Creator/CarlosAlazraqui is Rad Dudesman, and the Loboan Plumber, Scout.
** Creator/MichaelDorn reprises his role as Dr. Viktor, and also voices Zs'Skayr's new Loboan minion, Crjo.
** Creator/JeffreyCombs is Kuphulu.
** Creator/KariWahlgren reprises her role as Charmcaster, and also voices Viktoria.
* IKnewIt:
** Many, ''many'' fans had guessed that the reason Ben doesn't use Feedback anymore [[spoiler:was because Malware had a part in it, most guessing that he flat-out ''destroyed'' the form, which is exactly what he did in "Showdown Part 1"]].
** Many predicted that there would be a parody of the HaremAnime genre, due to so many girls being attracted to Ben. [[HilariousInHindsight Guess what "Rules of Engagement" is about?]]
* {{Jossed}}: Many figured Phil died after his first appearance in the original ''Ben 10'' series. This series confirms that he's actually, for all intents and purposes, alive and well, [[spoiler:albeit suffering from a split personality]].
* LyingCreator:
** Derrick J. Wyatt got mistaken for this due to "Store 23" featuring present Feedback, despite him stating several times he wasn't in the new Omnitrix. It was actually a diffusion error: that episode was suppose to take place after "Showdown Part 1" and "Part 2" where Ben would reacquire Feedback [[http://www.formspring.me/DerrickJWyatt/q/419518244789976339]][[http://www.formspring.me/DerrickJWyatt/q/419520917178182284]]
** He also states that Zombozo was no longer a [[SelfDemonstrating/TheJoker Joker]] {{Expy}}. When Zombozo shows up in "Special Delivery", he still uses the same Joker-esque gadgets from ''Ultimate Alien'' rather than his more supernatural powers from the Original Series. To be fair, his ''personality'' is less like the Joker now, although it's also not the same personality he had in the Original Series.
** Way Big's ability to shoot cosmic rays was stated to be caused by an Ultimatrix glitch that wasn't present in the current Omnitrix. [[spoiler:Yet he still uses it against Malware at one point.]]
** Derrick said Creator/SteveBlum wasn't reprising any previous roles. In "Vilgax Must Croak", he plays Vilgax.
*** As of "Mystery, Incorporeal", he's also back as Ghostfreak.
** Albedo was stated by Derrick to no longer possess the transformation ability gained in Ultimate Alien, instead relying on an Omnitrix again. In the show however, Albedo explains that he ''does'' still have it, and that his Omnitrix-looking device is merely a stabilizer to help him maintain his transformations longer.
* [[NakedPeopleAreFunny Naked Gourmands Are Funny]]: The reason why Upchuck [[http://www.formspring.me/DerrickJWyatt/q/436721332583951525 is no longer wearing a suit]] when used by 16-year-old Ben.
* TheOtherDarrin:
** Many aliens who were played by Creator/DeeBradleyBaker (even those who themselves were replaced by Dee) have been replaced by a different VA (such as Cannonbolt being played by DavidKaye), though Dee still plays a few (Spidermonkey, Water Hazard, Lodestar.).
** Meagan Smith, Gwen's 10-year old actor, is not reprising her role, meaning that AshleyJohnson is playing both versions.
** Azmuth is now voiced by Ren Auberjonois, having been voiced by Creator/JeffBennett during ''Alien Force'' and ''Ultimate Alien'' and by Robert David Hall in the original series and ''Destroy All Aliens''.
** Creator/DavidKaye replaces Powers Boothe as Sunder. He also replaces Jeff Doucette as Thumbskull and Creator/TimCurry as Joseph Chadwick in ''An American Benwolf In London'', due to Tim Curry being sick at the time.
** Grandpa Max was recast in the French dub after the first few episodes because the original actor passed away.
** Creator/JuddNelson replaces Christien Anholt and Creator/YuriLowenthal as Eon and Creator/FredTatasciore and Sean Donnellan as Ben 10,000.
** Bumper Robinson, Creator/VanessaMarshall, Ogie Banks, and Creator/CoreyBurton replace Phil Morris, Creator/NicoleSullivan, Sam Lerner, and DiedrichBader in the repsective role [[WesternAnimation/TheSecretSaturdays Doc, Drew, and Zak Saturday and Fiskerton]]. [[spoiler: Ironically, the only ''TSS'' character not to be recast is [[BigBad V.V.]] [[BackFromTheDead Argost]], whom is reprised by Burton.]]
** Phil is played by Creator/RobPaulsen instead of Robert Patrick, as he was in the original series.
** Forever King Chadwick is played by Creator/DavidKaye in "An American Benwolf in London" instead of Creator/TimCurry, because Tim Curry fell ill around the time of the episode's recording.
** Adwaita is voiced by Creator/SteveBlum instead of Creator/JohnDiMaggio.
* PlayingAgainstType:
** Bumper Robinson as Rook.
** Yuri Lowenthal, normally known for voicing heroic teenagers, plays several aliens that are a bit different from what he's known for. The best example is Kickin' Hawk, a much larger and more muscle-bound character than, say, [[Anime/TengenToppaGurrenLagann Simon]].
** Creator/CoreyBurton, well-known for playing antagonists and wise men, plays store clerk and ButtMonkey Mr. Baumman in this show.
** Along with Vilgax, a role that Creator/SteveBlum reprises, he ''also'' plays Hobble, who essentially amounts to the ButtMonkey of "Vilgax Must Croak".
** TaraPlatt as Ester, who isn't an older, serious-minded woman.
* PromotedFanboy: While Derrick got to do some design work on the previous sequels ([=SevenSeven=], the Vreedles), he makes it clear that he's glad to work as the main art designer on his Formspring.
* RecycledScript: And ''how''. Sometimes, it really makes you feel like they took the idea to make the show more like the original series a bit too literally:
** "Hot Stretch" involves aliens with hight body temperature attempting to use a machine to raise Earth's temperature so it would be livable to them. Season 3 of ''WesternAnimation/Ben10AlienForce'' had an episode with Vulkanus attempting to do exactly the same thing with the same purpose.
** While not identical, "Of Predators and Prey" has a lot of similarities with Vilgax's first direct encounter with Ben, down to Ben getting captured and the ship exploding at the end.
** "Outbreak" involves Dr. Psychobos stealing a piece of the Omnitrix, resulting in it transforming the others instead of Ben. This seems like a mix of "Dr. Animo and the Mutant Ray" (where Animo had stolen the Omnitrix's faceplate) and the ''Ultimate Alien'' episode "Inspector 13" (where the Omnitrix, after being hacked by a villain, ends up turning Kevin and Gwen into aliens instead of Ben).
** "Many Happy Returns" isn't a recycled script in itself, but the opening scene with Ben saving a girl from fire is basically lifted from a similar scene in episode 2 of the original show... only with Rath instead of Heatblast. Possibly a MythologyGag.
** "Special Delivery" has Psyphon trying to get his hand on a dwarf star, a device that is practically identical in its effect to the Forever King's Sub-Energy in the original show (except it works better). Plus, Ben defeats him by [[MookHorrorShow scaring him with Toepick]], practically the same way he defeated Zombozo with Ghostfreak in their first fight. Oh, and Ben wrecked Mr. Baumann's car just like Kevin's. Seriously, it's like they tried to use as much old ideas as possible to make a new episode.
** ''T.G.I.S.'' has Dr Animo resurrect [[spoiler:BigBad Argost from TheSecretSaturdays]] much the same way he resurrected Vilgax in ''Ben 10,000''.
** An episode has Ma Vreedle threaten to destroy Earth if he son isn't brought back to her... which was ''exactly'' the premise of the episode that introduced Attea, Emperor Milleus and Alien X.
** ''Something Zombozo This Way Comes'' is almost entirely based on Original Series episode ''Last Laugh'', down to copying the ending where Ben scared Zombozo into leaving (only with [[spoiler:Toepick]] instead of Ghostfreak).
* RoleReprisal: After a few years since the first series, Creator/SteveBlum finally reprises his role as Vilgax, as well as playing Zs'kayr again.
* RunningTheAsylum: Aspects of this show up from time to time, mostly in characterization and design aspects.
* ScheduleSlip: "And Then There Were None" and "And Then There Were Ben", two-parter episodes involving TheMultiverse, have been delayed (according to some sources to 2015, due to [[ExecutiveMeddling higher-ups]] wanting it to coincide with the [[MilestoneCelebration 10-year anniversary]]), along with the other episodes of the Rooters Story Arc. A few of the Rooters episodes have aired in Latin America, but the two-parter is still as-of-yet, unaired.
* SeriesHiatus: The show had a five month break between the third and four arcs, and another between the fifth and six.
* ShortRunInPeru: Most of "The Evil Rooters" arc aired in Latin America before it even had a definite airdate in the states.
* SpecialEffectsFailure: There's a sequence in "The Frogs of War Part 1" where Fourarms charges at some Inkurseans, who just stand there not firing or moving as he knocks them over.
* ThrowItIn: [[http://www.formspring.me/DerrickJWyatt/q/438013861514205911 Derrick says]] Psychobos' {{Catchphrase}} ("And I use that term ''loosely''...") was originally just said once. It was when Eric Bauza, his actor, started putting it in inappropriate areas that they decided to make it his catchphrase.
* WhatCouldHaveBeen:
** [[spoiler:The alien dog that used to be Khyber's that was adopted by Kevin]] was planned to be in "Frogs of War", but the scene had to be cut for time.
** Zombozo's escape in "Something Zombozo This Way Comes" was to have him land on Anur Transyl, thus possibly giving him some sort of role in the arc with Zs'Kayr in it, but they [[AbortedArc scrapped it]].
* WordOfGod: The reason why Bullfrag looks different from other Incurseans is because he's a genetically optimal (completely healthy and fit) specimen, and most Incurseans have poor diets.

!Other
* Several aliens have sound effects that accompany their speech or movements: Spidermonkey has monkey-like chatter; Crashhopper's speech and jumps include cricket noises; and Shocksquatch has a crackling undertone to his voice like electricity. Liam's speech is littered with chicken noises, but Kickin' Hawk (who was based on Liam) has hawk screams instead.
* We discover in one episode that Rook's given name is Blonko; his people put their surname first, like another alien species, [[Series/StarTrekDeepSpaceNine the Bajorans]]. (Like most Asian-ethnic people in RealLife, as well).
* Upchuck's species, Gourmands, come in two different variants, Murk and Perk. These correspond to the two different designs that Upchuck has had in the original series and the sequels. The original series' Upchuck was a Perk which is a reference to Tom Perkins who designed Upchuck in the original series, while the sequels' design for Upchuck is a Murk which is a reference to Glen Murakami who was an executive producer for the sequels.
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