Ultimate Kevin Arc

The Ultimate Kevin Arc is the second story arc of Ben 10: Ultimate Alien, it deals with the aftermath of Aggregor's Quest and the threat that Kevin poses in his new mutated form, with the rest of the characters debating whether they should kill him or not.
==Ultimate Alien==
====The Forge of Creation====
Once the team is taken by Paradox to the entry of the Forge of Creation, the Rust Bucket 3 gets stuck in the Chrono Randomization Barrier. The group is then attacked by Aggregor's soldiers, but Ben, as Terraspin, manages to defeat them. Once out of the ship they try to free the ship, but Ben leans on the Chrono Randomization Barrier and brings a 10-year-old Ben to the present, who attacks the team.
Solved the problem, the two Bens, Gwen and Kevin land sharply in the hands of a gigantic Celestialsapien female. In the exterior they are attacked By Aggregor, who manages to easily defeat Gwen and Kevin, but the two Bens manage to hold their own against Aggregor for a while longer. However they too are eventually overpowered by him. With the inevitable fate that Aggregor was close to obtaining the power of the Celestialsapien baby, 10-year-old Ben awakens and tells Kevin to absorb the power of the Omnitrix again. Instead Kevin goes towards 16-year-old Ben and absorbs the power of the Ultimatrix, and mutates for the fourth time and transforms into Ultimate Kevin. Ultimate Kevin prevents Aggregor from absorbing the infant Celestialsapien then proceeds to easily overwhelms Aggregor, ultimately defeating him by absorbing his powers as well also transferring his prisoners into Kevin in the process.
However all of the excess absorbed energy causes Kevin to become mentally unstable once again, and he contemplates absorbing the baby Celestialsapien himself. The words of 10-year-old Ben manage to sway his mind and he departs from the Forge of Creation, promising to return.
====...Nor Iron Bars a Cage====
Because his mind was unstable, Kevin is looking for revenge on those who have harmed either him or someone he cared about.
thumb|Kevin back to The Null Void
Kevin returns voluntarily to Incarcecon, the prison in the Null Void. Kevin acts like the other prisoners, but he's planning to kill Morgg, the supreme local commander, who years before, when Kevin was a child, killed another prisoner named Kwarrel, who helped him get control of his powers and escape.
Ben and Gwen look for Kevin at his house. They find an inscription that takes them to the prison, when Morgg is alerted of their unscheduled arrival. They eventually manage to escape and discover his plan of using the prisoners to mine a hallucinogenic powder. Kevin finds Quince, who tries to talk him out of killing Morgg, but Kevin doesn't listen. Once Kevin sees Morgg in the underground tunnels, he attacks him, but Morgg activates the prisoner's necklaces. Ben and Gwen realize how the necklaces work and Ben destroys them, leaving Morgg defenseless. Ben and Gwen find Kevin, who's about to attack Morgg. They try to talk him out of it, but he doesn't listen, so Ben turns into Armodrillo to fight him.
The battle causes the tunnel to collapse, which allows Kevin and Morgg to escape unseen. Morgg is headed to an elevator to escape the prison, but Kevin was already waiting for him. Morgg begs for his life, but Kevin doesn't listen and throws him into the elevator and cuts the wire. Luckily, Gwen is able to save him by using a powerful spell to stop the elevator. Thinking that he accomplished his vengeful plan to kill Morgg, Kevin escapes the Null Void.
====The Enemy of My Enemy====
Kevin later chases Argit, and tries to kill him, but Argit escapes and goes to Ben and Gwen for help. Argit is sent to the Plumbers' Academy, where he is almost arrested for his crimes, but he convinces the Plumbers not to arrest him and he eventually survives another attack from Kevin, with Ben and Gwen's help.
Kevin attacks the Plumbers' Academy in search of Argit and presses the Magister to reveal his location, but Ben faces him as Ultimate Humungousaur. However, Ben loses the brief battle and returns to his human form, but before being killed by Kevin, Gwen appears to stop it. Argit tries to liberate the Vreedle Brothers, but they refuse and for Argit's petition they drop a nuclear bomb to Kevin, which threatens to destroy the place. Ben manages to transform in Echo Echo but he was not sufficiently powerful enough so he further transforms into Ultimate Echo Echo, subsequently flying out into space with the bomb before using his audiokinesis to push it further into space, where it harmlessly explodes, as Ultimate Echo Echo watches.
Kevin takes advantage of the moment and attacks Argit and after a brief assault, he raises Argit up by his collar, ready to finish him off, but Gwen yells at him telling him that he's done enough, and Kevin agrees, tossing Argit to the side and menacingly approaches Gwen, who pleads with Kevin to give himself up, but Kevin responds with an assault that sends Gwen off her feet, leaving her in tears and at Kevin's mercy as he charges up a finishing blast, but he hesitates before relenting, telling her that "the only reason [she] was alive is because of what [she] used to mean to him", ultimately leaving the Academy,
As Gwen dries her tears, Ben and the Magister enter the academy, to which Ben picks up Argit (who shut off his pulse), telling him to stop acting like he's dead, Subsequently, Argit is arrested by Vreedle Brothers on the order of Magister Coronach.
====Absolute Power====
Due to the fact that all his debts were received, Kevin is now only focused on absorbing energy. In his quest for power, Kevin easily defeated Pierce, Manny, Helen and Dr. Viktor, stealing their powers. Now targeting Alan, Kevin assaults him, much to Alan's confusion. Unfortunately, Alan is no match for Kevin, who manages to steal his powers from him. Ben soon arrived and turned into NRG to save Alan. Kevin then tried to absorb NRG's power, but the latter manages to fight him off, forcing Kevin to retreat, saving Alan, who informs him of what Kevin has done to the other Plumbers' Kids, along with Dr. Viktor.
Because of the massive threat Kevin has become, Ben goes to Gwen, demanding that she uses her powers to track down Kevin so Ben can "put Kevin down" before he hurts any more people. Gwen vehemently refuses and tries to stop Ben from leaving, causing a fight between the two. While Gwen initially has the advantage over Ben with her magic, Ben manages to defeat her with Way Big, knocking her unconscious. Later on, as Lodestar and Humongasaur respectively, Ben ruthlessly assaults the Forever Knights and later Vulkanus for the purpose of getting information on Kevin's whereabouts, to no success. Meanwhile, Gwen goes to Galvan Prime where Grandpa Max is recovering, in hopes that he would help her in stopping Ben from killing Kevin, but to her shock, disappointment, and anger, Max says that Ben is doing the right thing. With no other choice, Gwen looks for Darkstar.
After a brief scuffle between the two, Gwen returns Darkstar to his original form and offers him sufficient mana for one year, to which Darkstar agrees to. Later on, Gwen and Darkstar meet Ben as Humungousaur inside a mine while he was attacking Vulkanus for information, Using her mana, Gwen stops him and says to him that Darkstar agreed to help Kevin return to his old self.
Angered by how Gwen got Darkstar to help, Ben attempts to attack Darkstar only for Gwen to stop him once more. Moments later, the trio goes to Total Zone. Leaving Ben and Darkstar in the alley outside the rundown arcade, Gwen enters, to which she tells Kevin that she just wants to talk. Now struggling to his hunger for Gwen restrained, berating Gwen for tracking him down as he knowingly stayed away from her in fear of what he'd do to her. Ultimately, Kevin's hunger for energy takes over, and he proceeds to attack. After fending off Kevin's initial attacks, the latter uses Swampfire's vines to restrain Gwen. Struggling to break free, she telekinetically summons her dropped spellbook, subsequently using a spell to summon Charmcaster's Stone Creatures who promptly attack and overwhelm Kevin while one of them frees Gwen from the vines before joining the rest in overwhelming Kevin. Thinking that he's defeated, Gwen starts to leave while apologizing for using the Stone Creatures against him. Unfortunately, Kevin regains the upper hand by absorbing the Stone Creatures' mana-filled runes, causing them to crumble to dust and giving him the power to manipulate mana, much to Gwen's shock as he subsequently fires a mana projectile at Gwen, who sends one in return, but it is no match for Kevin's larger orb, though Gwen is able to shield herself from said orb. 
Kevin then proceeds to use Echo Echo's audiokinesis to overwhelm Gwen enough to send her flying off her feet and subsequently crashing into the wall behind, and when she proceeds to try and get back up, it is too late; as Kevin is already towering over her, and he proceeds to absorb her powers, causing Gwen to scream in pain.
Before Kevin steals more of her energy, Gwen manages to briefly overwhelm Kevin once more with a spell that causes all the arcade machines to attack Kevin long enough for Gwen to escape back to the alley in front of the arcade with another spell. Later on, when Michael reveals his plan to use the remaining piece of the Dominus Librium to cure Kevin, Ben is opposed to Michael's plan, it is then revealed Michael had brought them to Los Soledad for the purpose of gaining Cooper's assistance in the plot to get the Dominus Librium working again, however Ben believes that they will fail. 
Later on, Kevin searches for Gwen at her house, where he breaks down her door only to be met with the fully healed Grandpa Max, who promptly begins to attack Kevin using various Plumber weapons, followed the Rust Bucket, however it only succeeds in irritating Kevin rather than stopping him, to which he proceeds to quickly overwhelm Max, angrily lamenting how he used to look up to Max and that he doesn't even have any powers to steal. Moments later, an unknown voice tells Kevin to put Max down, and it is soon revealed that the voice is from none other than Kevin's stepfather, Harvey Hackett. Further angered, Kevin makes his hatred of Harvey known as he berates him for (in his view) trying to take his real dad's place as well as convincing his mother to kick him out when he was 11, to which Harvey clarifies that his mother loved his late father more than him as well as that she loved Kevin more than either of them, Kevin, angered enough to activate his powers, tells Harvey to step aside, who bluntly refuses in order to protect Gwen, telling him that Max told him what Kevin had been doing, and that he'd never let Kevin's mother see him as he is now, and ultimately, as Kevin gets ready to strike him down, Harvey proclaims that he is not afraid of Kevin anymore.
Ben arrives, turning into Spidermonkey, and after a brief scuffle that ends with Kevin dispatching Ben by getting him caught in a wind tornado, Gwen finally reveals herself, and when Kevin tries to attack, she is prepared and briefly knocks him out by having him run into her mana, which knocks him back and by the time Kevin recovers, Gwen has already fled, prompting Kevin to chase her. 
Meanwhile, Gwen is above the car-filled street, telling Ben through their Plumber Badges that her plan will work and it won't have to end in Kevin's death. Eventually, Kevin catches up to Gwen, who is able to drive him away by throwing magenta-colored glowing mana spheres at his face. Gwen jumps on a truck, but Kevin is in front of the road and the truck crashes into him, causing an explosion that alerts Ben into a desperate worry. Gwen and the driver were able to survive by being protected by Gwen's magenta-violet purple shield, but Kevin also survives and Gwen tells the trucker to run. Gwen then tries to talk to Kevin, but his insanity is still preventing that. Gwen attacks Kevin using a lightning spell, but Kevin uses the lightning as fuel for his Chromastone powers. As Kevin was going to absorb the rest of Gwen's magical and Anodite powers, Spidermonkey comes and transforms into Echo Echo to fight. 
Kevin seemingly kills all the Echo Echo clones and starts absorbing Gwen's powers again, but he is hit by a laser blast from Julie and Ship. Julie brings Gwen into Ship and they begin flying to Los Soledad, where Kevin follows them. Luckily, Echo Echo was able to survive by having one of his clones stay inside the trunk of his car.
Meanwhile, Cooper and Darkstar are almost done building the machine, and Gwen calls Cooper to warn them that Kevin's coming. Cooper thinks of a plan to distract Kevin by taking control of Los Soledad's missile silos, firing the missiles at Kevin. But Kevin destroys all the missiles, surviving the ones that hit him and walks toward Gwen. When Cooper tries to stop Kevin from hurting Gwen, Kevin attempts to kill Cooper in the process. However, Echo Echo transforms into Ultimate Echo Echo and manages to save Cooper, then he whispers something into Cooper's ear and he runs off.
Kevin finally says he has had enough of Ben always besting him, and tries to kill him by throwing metal at him, but Ultimate Echo Echo destroys it all and finally defeats Kevin. Ultimate Echo Echo is ready to deliver the final blow, but Gwen prevents him from doing so and convinces him otherwise. After Ultimate Echo Echo transforms back into normal, Gwen tells Ben that they can cure Kevin and he is hooked up to the machine that will use the Dominus Librium in order to act as an energy siphon. Cooper turns on the machine and Kevin's powers are transferred to the Dominus Librium piece, finally returning Kevin to normal. But there's still bad news, as Darkstar absorbed all the power the Dominus Librium piece took, and becomes all-powerful; however, Ben knew of Darkstar's plan from the start and presses a button that strips him of all powers stolen.
Kevin, who's now sane once again, punches Darkstar (for the events of Trade Off) and thanks Cooper for changing him back. Gwen gives Cooper a kiss on the cheek for making Kevin normal again and Kevin asks for a kiss from Gwen, reminding her that he's her boyfriend. They kiss and Max and Julie explain that all the power Kevin stole from everyone else returns and that even Bivalvan, Galapagus, P'andor, Andreas and Ra'ad have returned to life. Kevin apologizes to Ben, but then they argue and Gwen breaks the argument so Ben and Kevin can help explain to her folks what happened to their house, but instead they ignore her and go to Mr. Smoothy.
==Trivia==
*Ben wanted to put Kevin down because he felt guilty for trusting him and responsible for any evil he might do.
*The Ultimate Kevin arc was originally planned for Season 2 of Alien Force, with Kevin mutating to save Gwen. However, the original plans were scrapped by network executives and the season ended up being very different from what Dwayne and the crew had hoped to do. Luckily, they came up with something else they liked while the original plans involving Ultimate Kevin were later reworked into Ultimate Alien.
==References==
===Dwayne McDuffie===
===Eugene Son===
Category:Story Arcs