History Recap / StarWarsTheCloneWarsS2E8BrainInvaders

** There are several elements of Barriss' actions, both before and after she's infected with a parasite, that hint at what she will do in season five. Ahsoka also tells her that she might find Anakin's views on the future "a bit radical".

* ContinuityNod: Mace Windu's battle on Dantooine from WesternAnimationStarWarsCloneWars is referenced.

** Mind-controlled clone troopers attacking Jedi? It sounds exactly like something that will eventually happen [[Film/RevengeOfTheSith towards the end of the war]]. When Barriss is captured, one clone trooper even says this:
--->"If there's one thing we clones know, it's how to stop a Jedi."

** The clone troopers are mind-controlled by parasites in their brains and attack the Jedi. It's later revealed this is similar to how Order 66 functions; since the clones actions aren't caused by malice, their intent can't be sensed.

* AirVentPassageway: Ahsoka and Barriss take to the ducts while evading the possessed clone troopers.

** The clone troopers are mind-controlled by parasites in their brains and attack the Jedi. It's later revealed this is similar to how Order 66 functions.

* JackBauerInterrogationTechnique: Implied to be what Anakin did to Poggle to get him to spill about how to defeat the brain worms.

* BaldOfEvil: Scythe, the first clone trooper to be infected and the one who brings the brain worm eggs onboard the frigate, has a shaved head, although presumably he doesn't normally qualify.

* ScreamDiscretionShot: When Barriss is captured and infected with a brain worm, her scream is cut off by a force-field going up.

** Mind-controlled clone troopers attacking Jedi? It sounds exactly like something that will eventually happen [[Film/RevengeOfTheSith towards the end of the war]]. When Barriss is captured, one trooper even says this:

* KillItWithIce: Ahsoka lowers the temperature by rupturing the coolant system, disabling the possessed clones. It takes longer for Barriss to succumb, as Mirialans are more resistant to the cold due to hailing from a cold planet.

* MurderIsTheBestSolution: Barriss definitely kills one possessed clone and might have killed another — whereas Ahsoka is clearly taking much greater care to avoid killing any of them.

* PuppeteerParasite: The Geonosian brain worms are confirmed to be able to control other species, and even ''Jedi'' (well, a Padawan, at least).

* CallBack: After two possessed clones attack Ahsoka and Barriss in the mess hall, Ahsoka mentions that her master [[Recap/StarWarsTheCloneWarsS1E16TheHiddenEnemy had a clone trooper betray him once]].

* BaldOfEvil: Scythe, the first trooper to be infected and the one who brings the brain worm eggs onboard the frigate, has a shaved head, although presumably he doesn't normally qualify.

** During Ahsoka and Barriss' conversation over food, Ahsoka mentions that her fellow apprentice would likely find Anakin's views on the future "a bit radical", and that she has no idea how peacetime will agree with him.

** There are several elements of Barriss' actions, both before and after she's infected with a parasite, that hint at what she will do in season five.

** When Anakin starts Force-choking Poggle, the Imperial March is heard in the background.

* {{Newsreel}}: Like all ''The Clone Wars'' episodes "Brain Invaders" opens with a bombastic bit framed like a Republic propaganda newsreel;
''[[center:[[AC:"Victory on Geonosis!\\
After a massive assault,\\
the Republic has finally recaptured the Separatist planet\\
and shut down its droid factories of doom. \\
An investigation by Luminara Unduli led to the discovery \\
of Queen Karina the Great, whose hive-mind could reanimate\\
dead Geonosian soldiers.\\
\\
During the destruction of the queen's temple, \\
the Jedi apprehended her advisor Poggle the Lesser, \\
and now prepare to deliver the villain to Coruscant for trial…."]]]]''
* NoSell: As Poggle informs Anakin via a translator droid, Geonosians have a natural immunity to {{Jedi mind trick}}s.

** Mind-controlled clone troopers attacking Jedi? It sounds exactly like something that will eventually happen [[Film/RevengeOfTheSith towards the end of the war]].