Ben 10: Ultimate Alien/YMMV

"Gwen: You've gotta let me try.
 * And the Fandom Rejoiced: When they brought back.
 * Another example comes from finally explaining Kevin's differing characterizations.
 * There was also fact that Ben has regained every alien that he has ever become, courtesy of his future self.
 * Anvilicious: "The Widening Gyre"
 * Authors Saving Throw: Finally, a plausible explanation for Kevin's inexplicable change in character is given.
 * And Ben finally acknowledges his character regression over the last few seasons.
 * Likewise with the first live action Ben 10 movie and the villain Eon. Plus why this series isn't following the first series future timeline. (Alternate Universe)
 * After the massive Villain Decay he suffered in Alien Force, Vilgax is eventually turned back into a threatenning villain by making him a Manipulative Bastard who impersonate Eldritch Abomination Diagon in order to get the service of higthly competent human minions,
 * Broken Base: On many, many subjects. The Ultimate Aliens themselves are probably the most noteworthy. Others include whether this series is good as the two before it, whether it's successor will be better or worse, and so on and so forth.
 * Canon Sue: Some fans saw Eunyce as this in her first apperance ; she seemed to appear out of nowhere and Ben suddenly gets attracted to her. Fortunately, she Took a Level In Badass in her next appearance and was as such Rescued From the Scrappy Heap.
 * Complete Monster: Still Zombozo. He goes after Ben's parents, and even his own hired hands (Vulkanus and Charmcaster) think he's a creepy bastard.
 * Aggregor as well, especially after  However
 * Also, Addwagia in "Where the Magic Happens", who wiped out a whole species of magic users  just so he could rule their dimension and be in control of all magic.
 * Morgg from "Nor Iron Bars a Cage" also qualifies. He hates a guy for mentoring and reforming other prisoners in Incarcecon and just waits for an opportunity to murder him first chance he gets, intending to follow up by murdering the 11 year old boy the guy spent a long time reforming to dispose of a witness. After becoming warden, he turns the prison into a slave labor camp to mine drugs for him to sell, having no problem offing anyone who crosses him and making it look like an accident. The guy is such a monster that likely the only reason Ben and Gwen stop  from killing him is to avoid   held accountable for murder.
 * Captain Nemesis became one when he returned for another episode. The first time, he merely tried to kill someone. This time, he actually succeeded. Several times. Charmcaster at least had her mess undone and Word of God states she's no longer evil and will now be looking to get better. His deeds are permanent, and though he does get a Pet the Dog moment at the end, he shows no actual remorse. Ben and Gwen outright call him a monster and pure evil several times.
 * Derailing Love Interests:
 * Julie's been getting it too. See Idiot Ball on the main page for her biggest screw up, but she's also been getting a lot snippier (beyond what's justified as stress from having a famous boyfriend). And she suddenly decided that Earth Needs Alien Tech NOW, despite all the people who have gone after Ship, you know, her pet, because he's effectively an alien super weapon. All this really started, oddly enough, after they introduced Eunice...
 * Ensemble Darkhorse: Jury Rigg may basically be a more combat-capable Grey Matter, but unlike Fasttrack, he averts Replacement Scrappy by being a hilarious little Heroic Comedic Sociopath.
 * Ultimate Echo Echo is considered such among the Ultimates, as he has the most unique design (also one of the few that isn't a Palette Swap with additional features) and a cool voice.
 * Evil Is Sexy: Aggregor is the first Ben 10 Big Bad to not be a hideous monster and actually be reasonably attractive, with long hair and an open shirt too.
 * At least he was until his One Winged Angel form.
 * Also, . A very dangerous version of Raven Hair Ivory Skin.
 * Foe Yay: Darkstar has shades of this, for Gwen.
 * Ultimate!Kevin's dialogue with Ben, in the beginning of the season finale, sound completely wrong taken out of context.
 * Hilarious in Hindsight: When asked if Zombozo would return, Dwayne McDuffie said "not if he knows what's good for him". One of the first villains confirmed for the next series is Zombozo. Looks like he doesn't know what's good for him.
 * Ho Yay:  Ben and Kevin in a car in "Duped".
 * Arguably Cash and J.T. in "Reflected Glory". How many times did they have their arms around each other again?
 * Ben and Kevin again in
 * Gwen and Charmcaster in "Where the Magic Happens".
 * And again in "Couples Retreat", where Gwen rags on Kevin for failing in his boyfriend duties all episode, and is a lot more emotionally invested in saving Charmcaster from being used by Darkstar. Ah, another good ol' Ben 10 Relationship Writing Fumble!
 * Jerkass Woobie: For some viewers, Gwen's cousin Sunny became this by the end of the episode she appeared in
 * Come the twist ending of "Night of the Living Nightmare",.
 * Karma Houdini:
 * A far better example is Will Harangue in "Computer Games", after attempting to kill Ben for no reason, he's not only not arrested but has turned the event against Ben.
 * Mondegreen: Until looking it up, this troper could have sworn that NRG's name was Energene, a play on the word Energy and the name Gene.
 * Moral Event Horizon: Ben seemed all too willing to kill Kevin. This included attacking many villains harshly to find out Kevin's whereabouts, and having a all-out fight with Gwen, who was trying to think of another option to save Kevin.
 * Mondegreen: Until looking it up, this troper could have sworn that NRG's name was Energene, a play on the word Energy and the name Gene.
 * Moral Event Horizon: Ben seemed all too willing to kill Kevin. This included attacking many villains harshly to find out Kevin's whereabouts, and having a all-out fight with Gwen, who was trying to think of another option to save Kevin.

Ben: I will. But only because I know you're going to fail."

"Ma Vreedle: Overreactin'?! OVERREACTIN'?!"
 * Then again, Kevin wasn't exactly a saint at the moment himself, and that he got of without any sort of negative consequences when he brutalized and tried to kill Ben, Gwen, and many others is somewhat jarring, "energy-induced insanity" or not.
 * Aggregor did this onscreen by  However, he could be considered to have already crossed it when
 * Defying Villain Decay, Zombozo crosses this by
 * Colonel Rozum imprisoning 775 aliens in a horrible underground prison for over five decades, many of whom likely did nothing wrong. Prisoner 775 for example was exiled to Earth by an alien tyrant who he was trying to save his planet from. He told Rozum this, multiple times and they didn't listen. The only thing keeping this guy from being a Complete Monster is his love for his family.
 * Prisoner 775 himself has one. Once he escapes, he intends to exact his revenge against Rozum. A viewer might not condone it, but could certainly understand his reasoning for revenge against just Rozum. Problem is, 775's targets expand to Rozum's whole family. They had absolutely nothing to do with his captivity, and he knows it. He just wants to kill them to make Rozum suffer. This may have been an intentional crossing of this on his part, as in the end
 * Word of God comments made online actually seem to indicate that
 * Captain Nemesis crosses the line in "To Catch a Falling Star"
 * Replacement Scrappy: Fasttrack has become a big one for XLR8. Not only is his design less creative than the raptor-on-wheels XLR8, Word of God has stated he's stronger and faster than XLR8, too. And since XLR8 was an Ensemble Darkhorse, this is not a good thing.
 * XLR8 was actually used in the Ben 10 Generator Rex Heroes United crossover.
 * Eatle's in a similar situation, only he isn't as hated as Fasttrack since his design is a lot more unique. Regardless, he was heavily redesigned in Omniverse to look more like an actual beetle, which may earn him some brownie points.
 * Seasonal Rot: The second season...hasn't been very well recieved. Most fans criticized for having far too many filler (with a lot of them having overly silly plots) and not focusing enough on the main plot. It fortunately got better in the lastest episodes.
 * Squick: No matter how "randomized" her DNA is, it can be a little unsettling to notice how much  and   favor... or worse, how she and   resemble each other. Or, for the   shippers, she could be a dream come true.
 * Hive Elena's offer to be more like Gwen as a girlfriend if that will make Ben happy.
 * Tear Jerker: The fate of
 * "Prisoner 775", everything about the title character in general. The worst part is when he
 * The ultimate fate of
 * In-universe,  causes   to cry for the first time in the series.
 * In "Ultimate Sacrifice".
 * In "The Ultimate Enemy",
 * They Wasted a Perfectly Good Character: Old George was a fairly well-received character, with an intriguing air and mystery to him, but  before we can learn much more about him or his backstory, including the question of how he's immortal.
 * Also, many people feel that
 * True Neutral: According to Word of God,  is this by the end of the series.
 * Unfortunate Implications:
 * Ma Vreedle is portrayed as a histrionic female.
 * True Neutral: According to Word of God,  is this by the end of the series.
 * Unfortunate Implications:
 * Ma Vreedle is portrayed as a histrionic female.


 * Villain Sue/God Mode Sue: Aggregor - As Ultimate Aggregor, until being defeated by
 * What an Idiot:
 * The reasoning behind