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Undercover is the eighteenth episode of Ben 10: Alien Force.
Kevin, Gwen and Ben destroy a teleporter they were working on and need help repairing it. Kevin suggests Cooper, the young boy who had helped the Tennysons in the past. Unfortunately, Cooper has been kidnapped by the DNAliens.
They track him to Los Soledad, the abandoned military base where Professor Paradox built his time machine. They discover that the Highbreed have erected a cloaking field, built by Cooper over the area, concealing a mysterious arch-like device. They free Cooper and have him destroy the cloaking generator, during which he has visions of the arch acting as a gateway for a fleet of ships and the Earth being destroyed. Despite destroying the generator, the Highbreed manage to repair it and continue their operations unhindered.
- It is revealed that DNAliens cannot handle very high frequency sounds.
Naming and Translations
|French||La Couverture||The Cover|
|Spanish (HA)||Un Viejo Conocido||An Old Acquaintance|
- When Kevin said to Ben "You used to turn into one of those (insects)", he was referring to Stinkfly.
- Ben's concerns about a "banana fly monster" in the beginning of the episode is a reference to the science-fiction horror film The Fly, the main character had a similar problem when he and a fly entered the teleporter he was working on at the same time transforming him into a fly monster.
- The teleporter is very similar to Paradox's time machine.
- The second hint towards the events of War of the Worlds are foreshadowed when Cooper was destroying the machine.
- Though Kevin shows tendencies of being protective, jealous and mad when other guys had a crush on Gwen, he was surprisingly good humored towards Cooper for his adolescent feelings for Gwen.
|Ben 10: Alien Force Episodes|
|Ben 10 Returns: Part 1 • Ben 10 Returns: Part 2 • Everybody Talks About the Weather • Kevin's Big Score • All That Glitters • Max Out • Pier Pressure • What Are Little Girls Made Of? • The Gauntlet • Paradox • Be-Knighted • Plumbers' Helpers • X = Ben + 2|
|Darkstar Rising • Alone Together • Good Copy, Bad Copy • Save the Last Dance • Undercover • Pet Project • Grounded • Voided • Inside Man • Birds of a Feather • Unearthed • War of the Worlds: Part 1 • War of the Worlds: Part 2|
|Vengeance of Vilgax: Part 1 • Vengeance of Vilgax: Part 2 • Inferno • Fool's Gold • Simple • Vreedle, Vreedle • Singlehanded • If All Else Fails • In Charm's Way • Ghost Town • Trade-Off • Busy Box • Con of Rath • Primus • Time Heals • The Secret of Chromastone • Above and Beyond • Vendetta • The Final Battle: Part 1 • The Final Battle: Part 2|
|Ben 10: Alien Swarm|