The Enemy of My Enemy

The Enemy of My Enemy is the eighteenth episode of Ben 10: Ultimate Alien.

Plot
Argit infiltrates the Plumbers' Academy with a plan to help the Vreedle Brothers to do the last thing anyone would expect.

Major events

 * We see the Plumbers' Academy for the first time.
 * The Vreedle Brothers appear for the first time since Con of Rath. At the end of this episode, they've somehow reformed and becomes plumbers as they arrested Argit.
 * This marks Argit's second appearence in Ultimate Alien.

Characters

 * Ben Tennyson
 * Gwen Tennyson

Villains

 * Kevin Levin
 * Argit
 * Vreedle Brothers

Aliens Used

 * Jetray
 * Humungousaur
 * Ultimate Humungousaur
 * Echo Echo
 * Ultimate Echo Echo

Trivia

 * Fusionfall releases Ultimate Humungousaur suit.Ff_ulthumungousaurset_384x216.jpg
 * This is the first time in Ultimate Alien that the Vreedle Brothers appear.
 * This is the 3rd time he uses more than 1 Ultimate form, the 1st in Too Hot too Handle and 2nd in Ultimate Aggregor.
 * The reason Kevin wanted to kill Argit is because what he did to Andreas in "Andrea's Fault"
 * This is the first time we see Kevin using Goop, Big Chill, and Brainstorm's powers.
 * In one of the scenes where Ben is talking to Gwen, his tongue is the same color as his skin.