By Emily Rome
Updated October 30, 2012 at 09:44 PM EDT

Your daily dose of morning cartoons comes with a bonus celeb voice on Wednesday: In a special Halloween episode of Nickelodeon’s Fanboy & Chum Chum, Fergie joins husband Josh Duhamel, who voices recurring character Ozwald “Oz” Harmounian.

The Black Eyed Peas singer will voice Copy Kitten, a super-villain who goes up against the show’s eponymous heroes. Check out an EW exclusive clip below, when Copy Kitten takes her husband Oz hostage.

The episode, called “Super Chums,” airs Wednesday, Oct. 31 at 7 a.m.

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