The Perfect Girlfriend

The Perfect Girlfriend is the eighteenth episode of the third season of Ben 10: Ultimate Alien, and the thirty-eighth episode overall.
==Synopsis==
When Ben finds himself in an intense battle against Ssserpent, Julie steps in and helps him defeat the slimy brute.
==Plot==
Ben and Gwen are driving Julie to the airport so she can go to her next international tennis match. When they arrive, Ben offers to escort Julie inside. However, Ben's car picks up a police report about Ssserpent who has escaped from prison. After an argument, Ben decides to go after Ssserpent, while Gwen helps Julie at the airport. 
At a warehouse where Ssserpent is hiding, the police are already there, waiting for assistance. Ben transforms into Goop and gets inside, but the door shuts and cuts him off from his Anti-Gravity Projector, leaving him completely inert and helpless. It turns out Ssserpent planned this from the beginning, and it is revealed that Goop has walked into a trap: a large centrifugal machine which Ssserpent activates and sets at high speed, planning to separate Goop into multiple compounds, which is shown to be quite painful for Goop. Julie then shows up when she is strangely supposed to be at the airport and distracts Ssserpent long enough to get the police inside and chase him out. She then turns the machine off and saves Goop, who then changes back into Ben, who is surprised to see Julie. 
Back at Ben's house, Julie explains that she thinks their relationship is more important than a tennis match. However, she acts strange, as she lets Ben stay home to watch Sumo Slammers while she, Gwen, and Kevin go shopping. Even Ship acts strange, growling and hissing at her. 
At the mall, Gwen questions Julie about her decisions, when suddenly she falls down the elevator shaft. She survives but injures her left ankle. At the hospital, Gwen has her ankle wrapped in a cast before Kevin helps her with her crutches. Ben, wondering why Gwen would fall down an empty elevator shaft, goes back to the mall with Julie to investigate. They ask a mechanic what happened, and the mechanic says that nothing was wrong with the elevator. The mechanic leaves before Ben transforms into Spidermonkey and goes into the shaft to check it out, but accidentally activates the elevator.
However, before the elevator could crush Spidermonkey, it seemingly stops just in time. Julie's eyes briefly glow, indicating she stopped it. Afterwards, Ben and Julie go the movies where they watch the new Sumo Slammers film. Gwen, curious about Julie's behavior, asks Kevin to go spy on them. After the movie, Ben leaves again to look for Ssserpent and Kevin follows Julie to Industry Boulevard, but suddenly, he is attacked by a pair of huge living buildings.
Ben, as Jetray, discovers that the Ssserpent sighting is just his shedded skin (Ssserpent used it as a decoy) and soon gets a call from Gwen that Kevin is under attack. Ben transforms into Way Big and defeats the building creatures. Way Big then gets curious about Julie's behavior as well, with Kevin saying the monster showed up right before she disappeared. Ben goes to Julie's house and meets her father, who says she isn't home, and that Ben should know. Ben then finds her at his place and gets her to watch with him a tennis match on TV.
However, he finds it to be a replay of one of Julie's matches from yesterday. He finally recognizes the girl he is with must be an imposter and she reveals herself to be Elena Valadis, who had disguised herself as Julie using the Microchips. She explains that since Ben loves Julie, she masqueraded as her and tried to provide Ben with everything he wanted to make him happy and then shape-shifted into other four unknown women if he does not like them. Ben also realizes that Elena was responsible for the buildings attacking Kevin and Gwen falling down the elevator shaft, with Elena saying they were "trying" to keep her and Ben apart. Ben asks Elena what she wants, and she replies that she just wants him.
Suddenly, the real Julie shows up so she could spend time with Ben, but then sees Elena. Before Ben can explain, an angered Elena transforms into her Microchip form, forcing Ben to fight her using Ultimate Echo Echo. When the fight spills outside, Elena ends up defeating Ultimate Echo Echo by choking him with the Microchips, but then Julie stops her by pointing out that if Elena kills Ultimate Echo Echo, then no one can have Ben. She also tells her that Elena does not know what love is like. Elena spares Ben before escaping into a sewer, saying she now knows what hate is, and promises to return again, as Ben and Julie look on with worry. 
==Noteworthy Events==
===Major Events===
*Ssserpent escapes from prison and is currently at large.
*Elena returns after her supposed death.
====Character Debuts====
*Ishiyama (Ultimate Alien debut)
*Mr. Yamamoto
*Samurais (Ultimate Alien debut)
*Living Buildings (first appearance)
==Characters==
*Ben Tennyson
*Gwen Tennyson
*Kevin Levin
*Julie Yamamoto
*Ship
*Ishiyama (first reappearance; movie)
*Mr. Yamamoto (first appearance)
*Carol Smith (on TV; cameo)
===Villains===
*Ssserpent
*Elena Valadis
*Samurais (first reappearance; movie)
*Living Buildings (first appearance)
*Microchips
==Aliens Used==
*Goop
*Spidermonkey
*Jetray
*Way Big (off-screen activation)
*Echo Echo (x2; goes Ultimate and reverts; cameos)
**Ultimate Echo Echo
==Naming and Translations==
==Cast==
==Errors==
*The closed captions on the Ben 10 Ultimate Alien: The Wild Truth DVD misspell Ssserpent's name as "Serpent".
*At Ben's house after "Julie" rescues him from Ssserpent, Gwen is missing her stockings.
*After Gwen returns home from the hospital, she is wearing stockings on under her cast.
*A few seconds after Kevin throws his glasses on the ground, they are gone.
*In one shot, Way Big's left shoulder is white.
*When Ultimate Echo Echo hesitates to punch Elena disguised as Julie, his mouth is green.
*Echo Echo's wires are not rendered properly before he reverts to Ben.
*The end credits misspell Ssserpent's name as "SSSerpent".
TPG Ssserpent Error.png|Incorrect closed captions on the Ben 10 Ultimate Alien: The Wild Truth DVD
TPG (95).png|Missing stockings
TPG (176).png|Gwen is wearing stockings under her cast
TPG (257).png|Missing glasses
TPG (309).png|White shoulder
TPG (437).png|Green mouth
TPG (450).png|Wires error
The Perfect Girlfriend Voice Credits (2).png|Credit error
==References==
===T.J. Collins===
===Cartoon Network===
es:La novia perfecta
it:La fidanzata perfetta
pl:Dziewczyna doskonała
pt-br:A Namorada Perfeita
ro:Iubita perfectă
Category:Episodes
Category:Ben 10: Ultimate Alien Episodes
Category:Ben 10: Ultimate Alien Season 3 Episodes
Category:Episodes Directed by Dan Riba