The Ultimate Enemy: Part 1

The Ultimate Enemy: Part 1 is the thirty-first episode of the third season of Ben 10: Ultimate Alien, and the fifty-first episode overall.
==Synopsis==
Dagon is getting closer and closer to entering our dimension thanks to an old foe.
==Plot==
As the war between the Forever Knights and the Flame Keepers' Circle continues, several Forever Knights are attacked by a group of Esoterica, and the blaster one of the knights was using is knocked across the ground over to Kevin. Kevin picks it up, connects his Plumber Badge to it, and uses it to continue fighting. He and Gwen are busy taking out Esoterica soldiers. Suddenly, they feel a large tremor, as Vilgax is still breaking the seal containing Dagon.
Sir George and Heatblast are still fighting Vilgax, who is trying to destroy the seal. Kevin and Gwen arrive, and battle Vilgax. He attacks the seal, then Ben, Gwen, George, and Kevin. He fires at the team. However, Gwen is able to shield them with a large mana dome. Unfortunately, Vilgax has been able to damage the seal just enough, so that Dagon is able to produce a wave that transforms every living person on the planet into an Esoterica. Ben, Gwen, Kevin, and Sir George are not affected due to Gwen's dome, as well as Julie, whom Ship shielded from the wave by transforming into their battle suit around her. Every being on Earth is now under Dagon's control.
Vilgax attacks again, with a large energy ball that breaks Gwen's mana dome. Heatblast, however, is able to use his fire to melt the rocky ground under Vilgax, and he sinks in. Vilgax is trapped; shoulder high in the rock, and Kevin tries to convince Sir George to wear his suit's helmet, as the iron in it stops Dagon from controlling his mind. George refuses and says that Ascalon is the only protection he needs. Heatblast tells Gwen to find a spell that can contain the Dagon, and she and Kevin go off to find one.
Heatblast then melts the rock under Vilgax, who gets trapped and cannot escape the rock. He asks Dagon to give him more power, so that he may free himself and break the seal. Dagon agrees and Vilgax glows blue and grows stronger as he breaks out of the rock. He attacks Heatblast and George, and Heatblast transforms into Eatle to fight him. After a long and difficult battle, Eatle is able to ram into Vilgax and send him flying. Vilgax breaks through several buildings and crashes into the top of a pyramid. While George and Eatle think that he has been defeated, Vilgax rises up and breaks the top off of the pyramid, then throws it at them. Eatle is able to cover and protect George before the large building falls on top of them. Vilgax crosses the wreckage and approaches the seal, as he starts to destroy it.
Meanwhile, Gwen and Kevin have taken the Rustbucket 3 back to her house in Bellwood, to retrieve a spell from one of her books with which she may be able to confine the Dagon. They are attacked by many Esoterica and are only able to hold them off long enough to enter Gwen's house, and for Gwen to put up a large mana dome around it, to keep the Esoterica at bay and to buy themselves some time.
As Vilgax attempts to destroy the seal, Dagon is angry at him, for the power he was given was more than enough to break the seal. Eatle and George rise from the wreckage and begin to attack Vilgax.
Gwen and Kevin are still at her house, and Gwen is disappointed to find that none of her books have any spell that could hold Dagon. The Esoterica finally break the shield, and she and Kevin are forced to flee. The Esoterica attacked them outside of her house, and Gwen and Kevin begin fighting them again (Kevin using the weapon he took and modified during their stay at Gwen's home). The Esoterica surround them, and Gwen tries to create a shield around them, but is mentally attacked by Dagon. She tells Kevin that her previous experience with the Lucubra's mind control has left something inside her, and Dagon is able to control her. Dagon then completely takes over her and makes her use her powers to race towards him. Kevin gets into one of the many abandoned cars and follows her.
Eatle and George are still fighting Vilgax. Eatle mentions to Vilgax that he is not a true servant of the Dagon, and he only wants something out of it for himself. Vilgax is angered and attacks Eatle again. He successfully attacks Eatle and George, knocking them away. Eatle then transforms into Humungousaur and runs towards Vilgax. Vilgax knocks Humungousaur away again, and he nearly falls onto Kevin, who has arrived in the car to tell them that Dagon's got Gwen.
Gwen approaches the seal, and Dagon expresses his disappointment in Vilgax's failure. He then makes Gwen transform into her Anodite form. Humungousaur approaches her, and tries to stop her, but Gwen uses her powers to knock him out, and forces him to transform back into Ben. As she begins to break the seal, Kevin runs up to her and grabs her arms, then covers her in the metal coating he was wearing, before pulling it back onto himself, with the exception of a metal cap over her head, to prevent Dagon's control. She thanks him and Kevin creates a metal helmet around Ben's head too, as well as offering one to George, who refuses again for the same reason. Gwen, George, Ben, and Kevin now corner Vilgax and demand him to tell them how to stop the Dagon from coming, and how to change everyone back from being Esoterica.
Vilgax asks Dagon for more power but is met with silence. Ben remarks that he is now on his own, but a ship comes in from overhead, and Psyphon exits it. Vilgax is angry that Psyphon is late, but Psyphon claims that gathering everything Vilgax asked for took more time than expected. Ben, Gwen, Kevin, and George approach Vilgax and Psyphon, and Ben transforms into Juryrigg. However, a large tremor shakes the cave, and the seal glows with a bright light, as Dagon's voice booms and reveals that he has finally escaped. The seal glows brighter, then breaks apart. Both sides approach it and look into Dagon's dimension but find nothing. They hear his booming laugh and run out to the cave's exposed ceiling to find the giant Dagon in the sky, as he boasts that he is "everywhere".
==Noteworthy Events==
===Major Events===
*Dagon is freed from the seal.
====Character Debut====
*Dagon
===Minor Events===
*Psyphon returns.
==Characters==
*Ben Tennyson
*Gwen Tennyson
*Kevin Levin
*Forever Knights
**Sir George
*Jimmy Jones (cameo)
*Mrs. Jones (cameo)
*Julie Yamamoto
*Ship
*Carol Smith (cameo)
*Trina (cameo)
===Villains===
*Flame Keepers' Circle
**Esoterica
*Vilgax
**Ultimate Vilgax
*Highbreed (photo)
*Psyphon
*Dagon (first appearance in person)
==Aliens Used==
*Heatblast
*Eatle
*Humungousaur
*Juryrigg
===Aliens on Jimmy's Wall===
*Goop
*Cannonbolt
*Jetray
*Echo Echo
*Humungousaur
*Chromastone
*Rath
==Spells Used==
*Presidium
==Quotes==
==Naming and Translations==
==Cast==
==Allusions==
*The entire human population turning into Esoterica is similar to what happened in the Doctor Who episode The End of Time when all of humanity is turned into a copy of The Master.
==Errors==
*Two Esoterica soldiers are partially transparent in some shots.
*When the wave turning humans into Esoterica reaches the tennis stadium, all the people should have transformed at once. However, Julie's opponent becomes an Esoterica and after about three seconds, the crowd follows suit.
*The crowd watching Julie's match also doesn't react or even move their heads at all when they see Ship form around Julie.
*When Kevin tells Sir George to put on his helmet, there is a layering error where Kevin's arm is in front of his body.
*When Sir George charges at Vilgax, the cave is much bigger than usual.
*When Gwen is under the control of Dagon, Humungousaur's lips are the same color as his skin.
*When Gwen overpowers Humungousaur, the glow on her hand is missing.
*In one shot, Vilgax's shoulders are bigger than they should be.
*The end credits misspell Dagon's name as "Daigon".
TUE1 (32).png|Partially transparent Esoterica soldiers
TUE1 (92).png|The crowd is not turned into Esoterica soldiers
TUE1 (127).png|Layering error
TUE1 (144).png|Cave size error
TUE1 (389).png|Lips error
TUE1 (414).png|Missing glow
TUE1 (439).png|Bigger shoulders
The Ultimate Enemy Part 1 Voice Credits (1).png|Credit error
==Trivia==
*The episode's title is listed as The Ultimate Enemy Pt. 1 within the episode itself, The Ultimate Enemy, Part 1 on the Ben 10 Ultimate Alien: The Ultimate Ending DVD, The Ultimate Enemy Part 1 on the Cartoon Network website, The Ultimate Enemy - Part 1 on Amazon Prime Video, and The Ultimate Enemy, Pt. 1 on iTunes.
*Matt Wayne did not read the script for The Creature From Beyond before writing this episode.
*The scene where Gwen and Kevin arrive at Gwen's house was storyboarded by Chuck Patton.
==References==
===Crew Statements===
====T.J. Collins====
====Matt Wayne====
====Chuck Patton====
===Cartoon Network===
es:Enemigo supremo
it:L'ultima nemesi
pl:Wróg ostateczny: część 1
pt-br:O Inimigo Supremo: Parte 1
ro:Duşmanul suprem: Partea 1
Category:Ben 10: Ultimate Alien Episodes
Category:Ben 10: Ultimate Alien Season 3 Episodes
Category:Episodes
Category:Two Part Episode
Category:Episodes Written by Matt Wayne
Category:Episodes Directed by Matt Youngberg
Category:Dagon Arc