The Return of Metallo: A Preview of "Upgrade"

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As the following promo states, allies become enemies - and vice versa - on Friday's new episode of Smallville.

Brian Austin Green returns to the show in the role of John Corben/Metallo on "Upgrade.". As you can see, he and Clark are about to get down to some serious business...

Attacked by Metallo

As the episode rolls along, Tess and Chloe actually send Corben in to prevent Clark from revealing all his secrets to Zod. That leads to a confrontation between the trio, as pictured below.

Want more of an idea of what's to come? Visit our section of Smallville spoilers. For now, you'll have to settle for an abundance of "Upgrade" photos, along with The CW's official preview for the hour...

Clark with Zod
Brian Austin Green as Metallo
Dangerous Trio
Photo of Metallo

[video url="http://www.tvfanatic.com/videos/upgrade-promo/" title="Upgrade Promo"] [/video]

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

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Smallville Quotes

Clark: I didn't know you were such a history buff.
Lex: I'm not. I'm just interested in people who ruled the world before they were thirty.

Everything okay, Smallville?

Lois