One of Ben's aliens decides to leave the Omnitrix and take over the world but needs to merge with Ben to become whole.



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Episode cast overview:
Ben Tennyson (voice)
Meagan Smith ...
Gwen Tennyson (voice)
Max Tennyson (voice)
Tuba Player / Wildmutt / Acid Breath (voice)
Ghostfreak / Security Guard (voice)
Four Arms (voice)
Grey Matter (voice) (as Richard Horvitz)
Frightwig (voice)
Thumbskull (voice)
Little Boy / Tiffany (voice)


As Gwen applies to the prestigious Bancroft Academy, the Circus Freaks attack it for some quick cash. Ben changes to Ghostfreak to fight them, but when he changes back to Ben he discovers Ghostfreak has escaped the Omnitrix and wants to rule the world. Now, Ben must fight against one of his aliens. Written by Jesse Sanchez

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Release Date:

25 July 2006 (USA)  »

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Did You Know?


Ben Tennyson: This... can't be happening. You *can't* be you. *I'm* you!
Ghostfreak: I was *never* you! An ectoneurite's consciousness exists even in a few strands of DNA. When the sample was taken for the Omnitrix, I was trapped inside. But now I can reveal my *true* self!
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References Ghostbusters (1984) See more »

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How many aliens ? bigmalewuss
Ben 10 back in school? Wonder what that'd be like for hero. dragonscaler
Major cameo appearance! Matt_Crane
Long Time Watcher of Ben 10, But Confused... rhunt84
'Don't Drink the Water' - WTH? Citoyen
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