We learned last week that Fox is officially going forward with a limited revival of fan favorite series The X-Files, 13 years after the show aired its final episode. The six-episode series will of course center on the characters Mulder and Scully, with David Duchovny and Gillian Anderson reprising their iconic roles.

In an interview on the Late Show With David Letterman this week, Duchovny spoke briefly about the series, revealing that Mulder and Scully aren’t the only two original characters who will be returning. So too will Mitch Pileggi’s FBI assistant director Walter Skinner, as well as the so-called Cigarette Smoking Man.

It was William B. Davis who portrayed the villainous character throughout the original series, serving as the main antagonist of the show. He was almost always seen smoking the fictional Morley Cigarettes (which recently made an appearance on The Walking Dead!), and he’s widely considered one of the best TV villains of all time.

You can check out a snippet of Duchovny’s interview with Letterman below, where he talks about the X-Files revival.

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Production is set to begin on the new series this summer, and no premiere date has been announced.

Series creator Chris Carter, who is again in charge, said that the revival will be comprised of both mythology episodes and standalone monster-of-the-week tales, in the style of the original series. Writers Glen Morgan and James Wong are also coming back, as is Glen’s brother Darin, writer of some of The X-Files’ best episodes.