Matt Mitovich with Fancast has the scoop on “Red-K Clark” and “Metallo”! Okay, both of these characters in the same sentence = “AWESOME”!  I sure hope we see some promo stills for this episode.

“Upgrade”, the eighteenth episode this season, airs on April 16th!

Can you give us ‘Smallville’ fans any scoop on how the red kryptonite ties into Metallo’s return? – Mickey
You know how Clark usually makes a mistake when “on” Red K? Well, the April 16th episode, “Upgrade,” is no different – save for the ominous fact that this time around, his reckless gaffe on a grander level, involving the Fortress, Zod and Metallo.

In the ‘Smallville’ episode “Upgrade,” are both Zod and Clark infected with Red Kryptonite? – WendySue
Nope, Zod is spared infection. Speaking of ‘Upgrade,” I hear that Brian Austin Green is extra-awesome in his encore… and that he has some moments with Erica Durance that will ruffle a certain fan base’s feathers.

SOURCE: Fancast