The Enemy of My Enemy

The Enemy of My Enemy is the eighth episode of the second season of Ben 10: Ultimate Alien, and the eighteenth episode overall.
==Synopsis==
Argit infiltrates the Plumbers' Academy with a plan to help the Vreedle Brothers do the last thing anyone would expect.
==Plot==
In a small hut, the Vreedle Brothers' father speaks with Argit, saying that he enrolled them in the Plumbers' Academy, but they are failing in their exams. He is sending Argit to change their scores or he shall get a bad punishment for not doing so.
While taking a ride in Ben's car, Ben and Gwen discuss how Ultimate Kevin is still continuing his rampage on everyone that wronged him and that he needs to be taken care of. Just then, Ben accidentally runs over Argit, but he survives. Argit explains that he needs their help in order to hide from Ultimate Kevin, who he met earlier when he came to Earth for some supplies from him, but Ultimate Kevin attacks him for all of his double-crossing, and eventually, Argit was able to escape. Argit says that they need to hide him from Ultimate Kevin, so they suggest a few places like the Los Soledad and the Null Void until they settle on the Plumbers' Academy, which Argit only agrees to go to because he needs to fulfill his promise to Pa Vreedle. While on the way there, Ultimate Kevin attacks them. Ultimate Kevin uses Big Chill's intangibility and goes inside the jet, asking for Argit. Ben transforms into Jetray and battles Ultimate Kevin, but Ultimate Kevin is too strong. Gwen activates the airlock, which sends Ultimate Kevin out of the jet, but he only leaves them so he can save his falling car.
The group arrives at the Plumber's Academy, where they are greeted by the headmaster, Magister Coronach, but he is not happy to see Argit with them due to his criminal past. Coronach orders Plumbers to take Argit to a cell, while he talks to Ben and Gwen about bringing Argit here so he can escape from Ultimate Kevin. Meanwhile, Argit fakes having to go to the bathroom, with his escort taking him. Before he could realize it was a trick, Argit uses his quills to stun him. Argit then begins looking around for the students' grade room, but unfortunately ends up in a cafeteria filled with students. The Vreedles are also there and Argit tells them about their plan, but to keep a low profile by acting like they don't know who Argit is. Argit does find the room and changes the scores, but the Plumbers' Academy is shocked when Ultimate Kevin arrives.
Ben and Gwen confront Ultimate Kevin when he goes inside and attacks the students. Ben transforms into Humungousaur to fight Ultimate Kevin, but Ultimate Kevin was not impressed. So Humungousaur evolves into Ultimate Humungousaur to fight Ultimate Kevin, but Ultimate Kevin still has the upper hand and defeats Ultimate Humungousaur. As Ultimate Kevin is about to kill Ben after reverting to human, Gwen tries to stop him while Ultimate Kevin begins arguing with her. Then, Ultimate Kevin sees Argit, which makes him remember why he is here and tries to get Argit. Argit quickly runs back to the Vreedles and tells them he needs their help to fight Ultimate Kevin and the Vreedles unzip a bunch of weapons. Argit and the Vreedles come back, and Ultimate Kevin begins throwing Argit around the room. 
The Vreedles launch a bomb at Ultimate Kevin but have no idea that the bomb will destroy the school and everyone inside it. Ben wakes up and transforms into Echo Echo to stabilize the bomb using sonic screams, but it doesn't work, so Echo Echo transforms into Ultimate Echo Echo and takes the bomb, using his sonic disks, into space and holds it together until it's a safe distance away, where he lets it explode. As Ultimate Kevin was about to finish Argit off, Gwen stops him, causing Ultimate Kevin to get mad, but a little bit of his sanity makes him spare Gwen's life. Ultimate Kevin leaves, thinking that Argit is dead, but Argit is revealed to have shut off his pulse so Ultimate Kevin would think he was dead. Coronach orders the Vreedles to arrest Argit for assaulting two cadets, and because of the 14 active warrants for his arrest, and Ben and Gwen wonder if Ultimate Kevin could really become sane and normal again.
==Noteworthy Events==
===Major Events===
====Character Debuts====
*Magister Coronach
*Drax
*Octagon Vreedle (Ultimate Alien debut)
*Rhomboid Vreedle (Ultimate Alien debut)
*Pa Vreedle
==Characters==
===Main Characters===
*Ben Tennyson
*Gwen Tennyson
===Supporting Characters===
*Argit 
*Pa Vreedle (first appearance)
*Plumbers
**Magister Coronach (first appearance)
**Vreedle Brothers (first reappearance)
***Octagon Vreedle
***Rhomboid Vreedle
===Antagonists===
*Kevin Levin
**Ultimate Kevin
===Other Characters===
*Plumbers
**Drax (first appearance)
==Aliens Used==
*Jetray
*Humungousaur
**Ultimate Humungousaur
*Echo Echo
**Ultimate Echo Echo
==Quotes==
==Naming and Translations==
==Cast==
==Continuity==
*Ben alludes to Kevin crashing the Rustbucket 3 in the Forge of Creation when Ultimate Kevin enters the ship, from the episode of the same name.
==Allusions==
*This episode's title is based off the expression "The enemy of my enemy is my friend".
==Errors==
*When Ben talks to Gwen in his car, the stripes on his jacket are missing. This error occurs again when he talks to Gwen about taking Argit to the Plumbers' Academy.
*Argit is bigger than usual throughout the episode.
*When Ultimate Kevin reveals himself to Argit, his shoulder spikes are level even though one of his Chromastone spikes should be taller.
*When Ultimate Kevin talks to Argit, Ultimate Kevin's eye does not have its outline.
*When Ben, Gwen and Argit discuss where they're going to hide Argit, Gwen's collar is red instead of white.
*The episode keeps switching between Argit's jacket having a line on either side and having one line on the left side.
*The tracker Ultimate Kevin planted on Argit first appears to be very small, but when Ben holds it in his fingers, it is much bigger.
*Coronach's eyes differ between black and grey.
*One of the Plumbers' mouths disappears when he is done speaking.
*When Ben is about to transform into Humungousaur, the Ultimatrix's dial faces the wrong way.
*As Humungousaur turns into Ultimate Humungousaur, the four spikes of his Ultimatrix symbol pop out in a "+" formation instead of the regular "x" formation.
*In some shots, when Ultimate Humungousaur fights Ultimate Kevin, his Big Chill hood is missing.
*At one point when Ultimate Kevin punches Ultimate Humungousaur, Ultimate Kevin is smaller than usual.
*Ultimate Humungousaur reverts to Ben without reverting to Humungousaur first. 
*When Ultimate Echo Echo flies, one time he has light blue colored feet, like his shoulders, and another time he has blue feet like his regular skin.
*When Gwen sees that Ultimate Kevin is about to kill Argit, she is much thinner than usual.
*Ultimate Echo Echo reverts to Ben without reverting to Echo Echo first.
*In one shot, Coronach's sclerae are green.
*The end credits misspell Jetray's name as "JetRay" and Jeff Bennett's name as "Jeff Glenn Bennett".
Error Ben's jacket.png|Missing stripes
TEoME (50).png|Argit size error
TEoME (68).png|Shoulder spikes error
TEoME (97).png|Missing outline
TEoME (117).png|Collar error/No stripe
TEoME (126).png|Tracker's original size
TEoME (147).png|Tracker size error
TEoME (253).png|Grey eyes
TEoME (295).png|Missing mouth
TEoME (336.1).png|Ultimatrix dial error
TEoME (342).png|Ultimatrix symbol error
TEoME (376).png|Missing hood
TEoME (425).png|Feet error
TEoME (454).png|Gwen is thinner than usual
TEoME (490).png|Green sclerae
TEOME Voice Credits (1).png|Credit errors
==Trivia==
*The episode's title is listed as The Enemy Of My Enemy within the episode itself.
*FusionFall released an Ultimate Humungousaur suit in relation to this episode.
==References==
===T.J. Collins===
===Cartoon Network===
es:El enemigo de mi enemigo
pl:Wróg mojego wroga
pt-br:O Inimigo do Meu Inimigo
ro:Duşmanul duşmanului meu
Category:Ben 10: Ultimate Alien Episodes
Category:Episodes
Category:Episodes Written by Len Uhley
Category:Episodes Directed by Matt Youngberg
Category:Ben 10: Ultimate Alien Season 2 Episodes