Agents of S.H.I.E.L.D. returns to ABC for its sixth season in less than a month, and the network has released a batch of characters posters featuring the main cast.

The eight, moodily lit posters show the return of the fan-favorite intelligence agency operatives, including Clark Gregg returning as the mysterious Phil Coulson doppelgänger nicknamed "Sarge."

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Details about the sixth season are still being kept under wraps, but it's expected to take place approximately one year after the events of Avengers: Endgame.

In addition to the arrival of the sinister Coulson doppelgänger, following Coulson leaving to die peacefully in Tahiti with Melinda May at his side in the Season 5 finale, the sixth season also sees Mack step up into a leadership role as the new Director of S.H.I.E.L.D. As to how the returning characters deal with the doppelgänger's arrival has yet to be seen but will likely not go well.

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Marvel's Agents of S.H.I.E.L.D. is set to return to ABC on May 10 with 13 new episodes. The series stars Ming-Na Wen, Chloe Bennet, Henry Simmons, Iain De Caestecker, Natalia Cordova-Buckley, Elizabeth Henstridge and Clark Gregg.