Marvel's Agents of S.H.I.E.L.D.'s Alien Marvel's Agents of S.H.I.E.L.D.'s Alien

He's not just any alien. The Dec. 2 episode of Marvel's Agents of S.H.I.E.L.D. will finally reveal that its mysterious blue man from outer space — the one whose rejuvenating blood saved the life of Director Phil Coulson (Clark Gregg) — is a member of the humanoid Kree race. Yes, that's the same alien species that gave us Lee Pace's character, Ronan the Accuser, in the Marvel movie blockbuster Guardians of the Galaxy. But all this means bupkis to Coulson and his S.H.I.E.L.D. team.

"Our people don't know anything about the Kree or that there's a planet full of them," notes executive producer Jeffrey Bell. "What they do know is that the strange carvings created by Coulson after he was injected with the Kree serum are actually the map of a city, and they need to find that city before Hydra does. But where is it? Here or on another planet?"

The Hydra terrorists have more manpower and resources than S.H.I.E.L.D., and their freaky obsession with the blue alien goes all the way back to the 1940s — the setting for ABC's upcoming spinoff series Marvel's Agent Carter. But S.H.I.E.L.D. has Skye. The do-or-die agent with no last name, played by Chloe Bennet, was also injected with Kree serum but, unlike Coulson, suffered no consequences. Similarly, her not-always-trusty cohort Raina (Ruth Negga) — again, no last name — was able to touch the deadly alien obelisk and survive without harm.

"You'll find out that Skye and Raina have something in common — and it's not that they're brunettes," Bennet says with a laugh. "Some of our überfans think the two of them are aliens. Or maybe they're something else — something different and special. It's all leading to a reveal that's mother-effing crazy."

Bennet, by the way, isn't giving up on Skye's love for turncoat agent Grant Ward (Brett Dalton). "I still ship them as a couple," she says. "Yeah, I know Grant's a pathological liar who was playing everyone at S.H.I.E.L.D., but he wasn't fake about his feelings for Skye. I have to believe that. I have to have my ounce of hope!"

Marvel's Agents of S.H.I.E.L.D. airs Tuesdays at 9/8c on ABC.

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