Oswalt will play Baxter Sarno, a popular Caprican comedian talk show host on whose show the Graystones ultimately appear. If the casting call (below) is anything to go by, the character will be introduced in episode 1x02, "Rebirth."
The star of "Backtalk With Baxter Sarno," he's a very bright talk show host similar to Letterman or Leno, but with the political intelligence of Jon Stewart and a retro feel that could belong to Dick Cavett or Jack Paar. He is seen delivering his nightly monologue on the topical events of the day.sptv050769.. (25) RECURRING ROLE. PLEASE SUBMIT NAMES AND NON-NAME ACTORS. MUST BE ABLE TO AD LIB.
Marsters will play Barnabus Greeley, a dangerous terrorist leader, in at least three episodes. EW's Ausiello, who broke the news earlier today, says "Driven by desires both moralistic and carnal, Barnabus is as lethal as he is unpredictable. And no ones does lethal and unpredictable better than Marsters."
The casting call for another recurring character, Graystone's rival Tomas Vergis, was posted on SpoilerTV last month, but still no word on who will be playing him. Vergis will appear in episode 6, "Know Thy Enemy," which is currently in production.