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20 Episodes 2010 - 2010
Episode 1
Fri, Apr 23, 201023 mins
Jimmy Jones, a young and adoring fan, outs Ben's superhero secret on the Internet, which popular entertainment figures subsequently use to present Ben as a menace to society. Still, Jimmy's compiled footage reveals a problem at NASA, where an unstoppable alien (of a species not even recognized by the Ultimatrix) has nightly and bit by bit been dismantling NASA's latest project. Ben, Gwen and Kevin must stop it before it sets off the project's power source - a nuclear bomb.

Episode 2
Fri, Apr 30, 201023 mins
At the same time Julie participants in her first professional tennis matches, the Forever Knights attack a museum, and a 3-D Sumo Slammers movie hits the theaters. Through the Ultimatrix, Ben finds he CAN be in three places at once, but the division also divides his personality, with touchy-feely understanding sensitive Ben accompanying Kevin to defend the museum, and belligerent Ben attending Julie's game.

Episode 3
Fri, May 7, 201023 mins
Grandpa Max finally informs Ben of organized attacks against his family since his superhero status went public. As Max speaks, Zombozo forms a new alliance with Charmcaster and Vulkanus to take out Ben's team separately, forcing a confrontation by first abducting one of Ben's relatives.

Episode 4
Fri, May 14, 201023 mins
Ben is quite tickled to be asked to have a video game based on him and his aliens, but the real plan, backed by newscaster Will Harangue, is to scan all of Ben's moves so Stalker, a spider-like robot, can best him at every turn. The subsequent prime time battle-to-the-death between Ben and Stalker proves to be a television ratings hit. Meanwhile, Gwen, disappointed by Kevin's qualities as a teacher, takes her driver's test.
Episode 5
Fri, May 21, 201023 mins
Up in the mountains, the team takes on Dr. Animo in his latest scheme to turn all in the immediate area into yeti. The team rounds him up without too much trouble only to learn that there's an alien raising Cain back home. As it turns out, the turtle-like alien merely sought Ben's attention in hopes of being taken back home. He tells a tale of incarceration along with four other aliens aboard a spaceship belonging to Aggregor, an Osmosian who hopes to absorb the full powers of each alien to obtain his ultimate goal.
Episode 6
Fri, May 28, 201023 mins
While hoping to make some side money, Kevin comes upon P'Andor, the third of five kidnapped aliens to've escaped Aggregor's ship. Unlike Galapagus or Bivalvan, P'Andor harbors a mean nature. Unable to escape his suit of specialized armor, he offers to handsomely pay anyone who can free him, leaving out that his toxic physical nature will kill all life on Earth if released. Warned of the danger by their Plumber badges, Ben, Gwen and Kevin fight to keep P'Andor inside his suit while a trio of sociopathic miscreants fight to free him, aiming to earn P'Andor's promise of a rich reward.
Episode 7
Fri, Jun 4, 201023 mins
The Forever Knights are causing trouble again, but this time, instead of stealing cash or technology, they're stealing pizzas, burritos and a smoothie machine - a far cry from their usual objectives. Looking into it, the team discovers Argit using the fourth of Aggregor's escaped prisoners (Andreas, who can cause earthquakes) to run an extortion scheme on the knights. When Sir Dagonet of the Knights appears to put things right, Ben, Gwen, Kevin, Argit and Andreas are imprisoned before being brought before an inquisition with only one possible sentence - death.
Episode 8
Fri, Jun 11, 201023 mins
Nightmares have lately plagued Ben, who's avoided sleep to avoid them. When he finally but reluctantly turns in for a full night's rest, Ra'ad, the last of Aggregor's escaped prisoners, attacks him. Ra'ad not only knows he's the last alien still free but that Ben's Ultimatrix has guided Aggregor to them with Ben's team ignorantly handing them over. Desperately refusing to fall back into Aggregor's clutches or allow the ignorance of Earthlings to put him there, Ra'ad hides within the Ultimatrix itself where Aggregor can't find him, but now Ra'ad's electrical personality begins to erase Ben's.
Episode 9
Fri, Jun 18, 201023 mins
Ben goes hero on some would-be terrorists who attempt to make a million bucks by holding screen star Jennifer Nocturne hostage. Ben saves her just before his own personal superhero, Captain Nemesis, arrives to save her as well. As a grateful Jennifer fawns over Ben, and Ben's own fame irks Nemesis, Gwen and Kevin look into the curious matter of how these terrorist came equipped with high tech fire power. The result: a falling star criminally bent on maintaining fame, which Ben refuses to accept.

Episode 10
Sun, Oct 10, 201023 mins
As Aggregor readies to return home and absorb his five recaptured aliens, a team of Plumbers moves in to arrest him. The arrest is woefully unsuccessful, but the team leader manages to disable Aggregor's hyper-drive. Unable to leave Earth, Aggregor takes over Los Soledad to use Professor Paradox' old time machine equipment to reach his goal. Ben's team, backed by Grandpa Max and the Air Force, means to stand in his way, which forces Aggregor to mind-control his aliens to battle Ben's team.
Episode 11
Wed, Oct 20, 201023 mins
Ben/Humungousaur goes into a murderous rage when Aggregor succeeds in absorbing the five abducted aliens. Empowered by them, Aggregor can now seek the four segments to the Map of Infinity, putting him in touch with the greatest power ever known. Ben's team needs to block only one segment to make holding the others useless. Their mission takes them to a Necrofriggian colony (Big Chill's race) on a tidally locked planet where religious colonists object strongly to Ben, Gwen and Kevin preparing to raid their temple. Meanwhile, Aggregor's damage to Grandpa Max's nervous system takes him out of the fighting.
Episode 12
Fri, Oct 15, 201023 mins
Cash and JT convince the team to allow them to take credit for the team's actions so they can earn money for Cash's mother's operation.
Episode 13
Tue, Mar 3, 202623 mins
The second segment to the Map of Infinity lies hidden within the small, hard core of an oceanic world. Ultimate Aggregor has a head start, and though Ben, Gwen and Kevin mean to catch up and stop him, denizens and residents of the watery world stand in their way.
Episode 14
Fri, Oct 29, 201023 mins
Ultimate Aggregor enters the world of Legerdomain in search of the third segment to the Map of Infinity. To follow, Gwen must entreat the help of Charmcaster, whose knowledge of rune pronunciation (needed to enter Legerdomain) is superior. Since Professor Paradox has seen fit to hide the segments in the most inaccessible places possible, Ben's team can only surmise that the third segment is the Alpha Rune (an amulet that rules over magic itself) which hangs about the neck of Addwaitya, despotic ruler of Legerdomain. As the team ventures deep into Legerdomain and confronts problems together, they wonder just how far to trust Charmcaster in their uneasy alliance.

Episode 15
Fri, Nov 5, 201023 mins
The Map of Infinity's final segment lies hidden within the Perplexahedron, a giant, cubic, outer space complex built by Professor Paradox to ward off the unworthy. Ben, Gwen and Kevin race against Ultimate Aggregor to find the segment first, confronting ever-shifting cube-shaped rooms that often hide deadly booby-traps and robot guards.
Episode 16
Fri, Nov 12, 201023 mins
With all four segments to the Map of Infinity in possession, Ultimate Aggegor heads for the Forge of Creation to become omniscient and all-powerful. Akin to making a supreme sacrifice, Ben deliberately transforms into Alien X, rejoining, once again, the all-powerful but perpetually stalemated Serena and Bellicus. Saved from that fate by Professor Paradox, who helps them all further, Ben, Gwen and Kevin fly into a nebula beyond the universe where Alien Xs are born. Here, as the team readies to engage Ultimate Aggegor at the Forge of Creation in one last battle for the universe, Ben falls into a forewarned time field to come face to face with his younger self. To save all, one of their number eventually pays a costly price.
Episode 17
Fri, Nov 19, 201023 mins
Driven to insanity through his absorption of power, Kevin has set off to collect on old debts, both great and small, including retribution for the death of a mentor while imprisoned in the Null Void. Ben and Gwen transport to the Null Void to warn Warden Morgg of the likely attempt on his life; but, as they quickly find themselves unwelcome guests, the presence of mining equipment clue the pair onto prison practices that shouldn't be there.
Episode 18
Fri, Dec 3, 201023 mins
With both Ultimate Kevin and Pops Vreedle threatening to kill him, Argit proverbially attempts to kill two birds with one stone by having Ben and Gwen take him to Plumbers Academy for safekeeping. Once aboard the academy space station, Argit, under Pops Vreedle's directive, escapes his guard and breaks into the records room to doctor the test results of cadet brothers Octagon and Rhomboid Vreele (who would otherwise soon flunk out); however, Ultimate Kevin comes to the station determined to exact final revenge on Argit.
Episode 19
Fri, Dec 10, 201023 mins
The Ultimate Kevin issue divides Gwen and Ben to the point of turning against each other and coming to blows. Gwen wants Ben to acknowledge Kevin as a friend in need of help, but Ben wants Gwen to accept that Kevin needs to be stopped before he kills someone, even if that means Kevin's death. Both turn separately to Grandpa Max for support. Max, still in Azmuth's water tank to repair his damaged nervous system, sides with Ben but warns Ben of not handling the matter "the Ben way." As Gwen, still wanting an alternative solution, forms an alliance with Darkstar, Ben pounds his way through former adversaries looking for Kevin.
Episode 20
Fri, Dec 10, 201023 mins
Allowing Ultimate Kevin to absorb some of Gwen's power gives him a taste for more, enabling Gwen to be used as bait. She and Ben and a few unexpected others work in tandem to delay Kevin long enough for Cooper and Darkstar to fashion a solution from a surviving fragment of the Dominus Librium. As fighting intensifies, though, it's hoped the proposed cure can be ready before anyone dies or before there's no choice but have Kevin put down.