<Tr> <Th> 20 </Th> <Td> 20 </Td> <Td> "Absolute Power, Part 2" </Td> <Td> Butch Lukic </Td> <Td> Charlotte Fullerton </Td> <Td> December 10, 2010 (2010 - 12 - 10) </Td> <Td> 120 </Td> </Tr> <Tr> <Td_colspan="7"> Halfway to the end of the episode, Kevin is still rampaging . Ben and Gwen use Michael Morningstar, Julie, Ship and Cooper to help cure Kevin . Ben defeated Kevin and in Los Soledad Cooper use the power of the Entropy Pump to turn Kevin back to human and the powers of the Andromeda aliens and the Plumbers' Helpers return . </Td> </Tr> <Table> <Tr> <Th> No . overall </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> </Tr> <Tr> <Th> 21 </Th> <Td> </Td> <Td> "The Transmogrification of Eunice" </Td> <Td> Matt Youngberg </Td> <Td> Eugene Son </Td> <Td> February 4, 2011 (2011 - 02 - 04) </Td> <Td> 201 </Td> </Tr> <Tr> <Td_colspan="7"> Ben, Gwen, and Kevin go out into the wilderness for a camping trip . During a car race between Ben and Kevin, a strange pod falls from space . While trying to open the pod, Gwen cuts her hand on it . The pod then opens to reveal a beautiful, dark green - eyed, blonde - haired girl . Gwen gives the girl some of her spare clothes and the girl reveals her name to be Eunice, though she doesn't remember anything else . As the camping trip continues, Eunice is revealed to have a strange connection to nature and Ben begins to develop romantic feelings for Eunice . Sunder then arrives on Earth on a mission to find Eunice . </Td> </Tr> <Tr> <Th> 22 </Th> <Td> </Td> <Td> "Eye of the Beholder" </Td> <Td> Dan Riba </Td> <Td> Len Uhley </Td> <Td> February 11, 2011 (2011 - 02 - 11) </Td> <Td> 202 </Td> </Tr> <Tr> <Td_colspan="7"> Baz - El is on a distant planet where he is stealing some valuable gems from some temple statues . Later, the temple guardian worshippers attack Baz - El . Ship suddenly hears Baz - El's cries for help, and leaves Julie to help his old owner . Julie ask Ben for help to locate Ship, who left to help Baz - El . However, their break - up makes things difficult, but Gwen and Kevin agree to help Julie . </Td> </Tr> <Tr> <Th> 23 </Th> <Td> </Td> <Td> "Viktor: The Spoils" </Td> <Td> Butch Lukic </Td> <Td> Kevin Grevioux </Td> <Td> February 18, 2011 (2011 - 02 - 18) </Td> <Td> 203 </Td> </Tr> <Tr> <Td_colspan="7"> <P> Zarcovia's soldiers has found the frozen body of Dr. Viktor . Prince Gyula and King Xarion want to see this weapon . Gyula wants to control Dr. Viktor to use him against rebels in their civil war, but Xarion tells him not to . King Xarion asks for help from Ben, Gwen, and Kevin and explains what Gyula is trying to accomplish . When they find Dr. Viktor's corpse, they are found by Gyula's soldiers . While fighting them, Dr. Viktor's ice block begins to melt and he breaks free; Gyula reveals that Dr. Viktor is under his control . </P> Ultimatrix alien debuts: Wildmutt (16 - year - old), Heatblast (16 - year - old) </Td> </Tr> <Tr> <Th> 24 </Th> <Td> </Td> <Td> "The Big Story" </Td> <Td> Matt Youngberg </Td> <Td> Ernie Altbacker and Jim Krieg </Td> <Td> March 4, 2011 (2011 - 03 - 04) </Td> <Td> 204 </Td> </Tr> <Tr> <Td_colspan="7"> Jimmy Jones sees a meteor falling in a cave, where an alien plant attacks him . He tells Ben and his team about it, but only Ben believes him . They go in the cave but the plant isn't there . The next day, Jimmy sees Ben going into the cave and talking to the plant . He takes a photo of that, but the photo isn't good, so Gwen doesn't believe him . Later, Jimmy goes to the supermarket and Ben, as Humongousaur, attacks him . Jimmy takes his bicycle and runs, but Ben becomes Cannonbolt and hunts him down . Jimmy goes to Gwen and Kevin and they all go to the cave . In the entrance of the cave they catch Jimmy and they take him to the plant . Jimmy finds that Gwen, Kevin, and Ben are clones made by the plant . </Td> </Tr> <Tr> <Th> 25 </Th> <Td> 5 </Td> <Td> "Girl Trouble" </Td> <Td> Dan Riba </Td> <Td> Eugene Son </Td> <Td> March 11, 2011 (2011 - 03 - 11) </Td> <Td> 205 </Td> </Tr> <Tr> <Td_colspan="7"> The team goes to Gwen's house to find a solution to defeat Computron's minions from Dimension 12 . When they go to Gwen's room, they find a dark - hair girl, who is Sunny, Gwen's naughty cousin . Gwen's mom insists they take Sunny with them . The team takes Sunny to the mission but they left her in Kevin's car . They go to fight the robots but Sunny follows them . She destroys the robots with ease and is very happy, but the team is looking at her strangely . Gwen tells her mother that Sunny is an Anodite, much to her surprise and disgust . </Td> </Tr> <Tr> <Th> 26 </Th> <Td> 6 </Td> <Td> "Revenge of the Swarm" </Td> <Td> Butch Lukic </Td> <Td> Stan Berkowitz </Td> <Td> March 18, 2011 (2011 - 03 - 18) </Td> <Td> 206 </Td> </Tr> <Tr> <Td_colspan="7"> One year after the events of Ben 10: Alien Swarm, Victor Validus attacks Ben at night but when he defends himself, he finds a Nanochip that was believed to have been destroyed along with its Queen . Ben, Kevin and Gwen find Victor's daughter, Elena, to see what is going on . </Td> </Tr> <Tr> <Th> 27 </Th> <Td> 7 </Td> <Td> "The Creature from Beyond" </Td> <Td> Dan Riba </Td> <Td> Len Uhley </Td> <Td> March 25, 2011 (2011 - 03 - 25) </Td> <Td> 207 </Td> </Tr> <Tr> <Td_colspan="7"> An evil creature known as Lucubra released from another dimension has plans to enslave the human race for its master . </Td> </Tr> <Tr> <Th> 28 </Th> <Td> 8 </Td> <Td> "Basic Training" </Td> <Td> Butch Lukic </Td> <Td> Adam Beechen </Td> <Td> April 1, 2011 (2011 - 04 - 01) </Td> <Td> 208 </Td> </Tr> <Tr> <Td_colspan="7"> <P> Ben, Gwen, and Kevin are summoned to Plumbers Academy to go under training . They create a good friendship with an alien named Tack and Ben dislikes the drill instructor, Magister Hulca, that is being targeted for revenge by a menacing Tetramand . </P> Ultimatrix alien debuts: Fasttrack, Diamondhead </Td> </Tr> <Tr> <Th> 29 </Th> <Td> 9 </Td> <Td> "It's Not Easy Being Gwen" </Td> <Td> Matt Youngberg </Td> <Td> Matt Wayne </Td> <Td> April 8, 2011 (2011 - 04 - 08) </Td> <Td> 209 </Td> </Tr> <Tr> <Td_colspan="7"> Gwen must juggle things around, in which she has to help Ben and Kevin recapture Dr. Animo, fill out invitations for her mother Natalie's family reunion, help Kevin get into school, finish exams, and go to her best friend Emily's piano performance . All in one day . </Td> </Tr> <Tr> <Th> 30 </Th> <Td> 10 </Td> <Td> "Ben 10,000 Returns" </Td> <Td> Matt Youngberg </Td> <Td> Dwayne McDuffie </Td> <Td> April 15, 2011 (2011 - 04 - 15) </Td> <Td> 210 </Td> </Tr> <Tr> <Td_colspan="7"> <P> Following a visit from Paradox after a fight with Eon, Ben 10,000 from an alternate future arrives twenty years from the future to seek the aid of his sixteen - year - old past counterpart in tracking down Eon . It is revealed that Eon is actually an adult Ben from an alternate world, and that he wants to destroy all of the other Bens to become the one and only Ben Tennyson . </P> Ultimatrix alien debuts: Ultimate Ben, Arctiguana, Clockwork, XLR8 </Td> </Tr> <Tr> <Th> 31 </Th> <Td> 11 </Td> <Td> "Moonstruck" </Td> <Td> Butch Lukic </Td> <Td> Len Uhley </Td> <Td> April 22, 2011 (2011 - 04 - 22) </Td> <Td> 211 </Td> </Tr> <Tr> <Td_colspan="7"> In flashbacks, Max tells the astounding story to Kevin, Gwen, and Ben of how he had met and fallen head - over-heels for Verdona when he was but seventeen years old in the 1940s . </Td> </Tr> <Tr> <Th> 32 </Th> <Td> 12 </Td> <Td> "Prisoner Number 775 Is Missing" </Td> <Td> Dan Riba </Td> <Td> Peter David </Td> <Td> April 29, 2011 (2011 - 04 - 29) </Td> <Td> 212 </Td> </Tr> <Tr> <Td_colspan="7"> <P> The secrets of Area 51 are revealed to Ben Tennyson by Colonel Rozum after Old George infiltrates and destroys it, setting free the 775th prisoner . </P> Ultimatrix alien debuts: Ultimate Wildmutt, ChamAlien </Td> </Tr> </Table> <Tr> <Th> No . overall </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> </Tr>

Ben 10 ultimate alien season 2 last episode