Talk about a piece of casting news we did NOT see coming!

Entertainment Weekly reports that Julian Assange - the mysterious man behind WikiLeakes, who is currently under house arrest in Great Britain - will lend his voice to the upcoming 500th episode of The Simpsons, which airs on February 19.

Assange apparently recorded his lines this summer, from a location unbeknownst to producers.

The episode itself will find Homer and Marge possibly getting kicked out of Springfield, due to their hijinks over the years.

As a result, “the Simpsons go off the grid to this very rugged place where they meet [Assange], who’s sort of their new Flanders,” says producer Al Jean, who admits the casting is "controversial" due to pending sex charges hanging over the activist's head.

He adds that there will also be a couple other, less scandalous cameos on the episode.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.