In a new interview with Comic Book Resources, the actor revealed that he has signed on for "an arc" that will consist of somewhere between three to six episodes. The only detail given upon the initial announcement of his involvement was a name -- Robert Gonzalez. That name belongs to no established Marvel character, which initially implied that Olmos' part would be totally new. However, as we learned in the midseason finale when Skye was revealed as Daisy Johnson, you can't always trust a name on "S.H.I.E.L.D."

Even more intriguing, another comment from Olmos implied that there's something more to "Robert Gonzalez." "Well, I'll just put it to you this way: When he smiles, the whole world smiles with him," said the actor.

With that in mind, we asked ourselves: Who might Robert Gonzalez really be? Here are five possible alter egos we came up with for Olmos' mystery-shrouded.

Maximus the Mad

Now that the Inhumans have been unleashed on the MCU, pretty much every new actor cast for "S.H.I.E.L.D." is going to endure Inhuman speculation. If you have an actor of Olmos' caliber, then you give him an A-list Inhuman to play. Maximus -- because of his powerful mind control powers -- seems like a solid choice, considering Olmos' cryptic tease. As a member of the Inhuman royal family, this slightly unhinged genius could give the TV Inhumans some serious gravitas while reserving the heavy hitters -- Medusa and Black Bolt -- for the upcoming feature film. Then again, Olmos is definitely a big enough name to add to the "Inhumans" movie cast. It's a long shot, but Marvel could be introducing Maximus into the MCU via TV with intention of Olmos reprising the role in film.

"Now, they're connecting the television world with the motion picture world, so some of the stories that'll be nurtured through the television will come out in the major motion picture, and vice versa," Olmos told CBR. "It's a good way of really coming and bringing together the universe of Marvel, through television and motion picture."

Nocculus

"S.H.I.E.L.D." has often turned to lesser-known characters -- Daniel Whitehall, Blizzard, Blackout -- to flesh out the show's cast, so Maximus might just be too big of a character for the series. Going off of "S.H.I.E.L.D.'s" recent shift in priorities and Olmos' comment, Nocculus could be the mind-controlling Inhuman that Olmos has signed on to play. This guy's a super-new character, having just debuted in last summer's "New Warriors" #5. This may seem far-fetched, but "S.H.I.E.L.D." may have set precedence for including super-new characters in the midseason finale. Remember that no-eyed guy on the phone at the end of the midseason finale? There's speculation that he's Reader, a new character introduced just last year in "Inhuman" #4. A character like Nocculus would be low on the list of priority characters for the "Inhumans" movie, thus keeping in line with Olmos' assertion that he's only involved with the MCU for one arc.

Mentallo

Aside from Inhumans, "Agents of S.H.I.E.L.D." devotes a lot of screen time to the evil Hydra organization. If Olmos isn't playing an Inhuman, then it's very possible that he could be playing a Hydra agent. Mentallo is a genuine Stan Lee and Jack Kirby creation with ties to both S.H.I.E.L.D. and Hydra, and he has the mutant power of mind control. Marvin Flumm, a name that probably should be changed to Robert Gonzalez, started out as a member of S.H.I.E.L.D.'s ESP Division before attempting to take over the organization. That fits right in line with last season's Hydra reveal.

And if you think that M-word marks Mentallo as a no-go for the Marvel show, then think again; Daisy Johnson was long thought to be a mutant, but she's been transformed into an Inhuman for inclusion in the Marvel TV series. And if not Inhuman, Mentallo's mind-control powers could be technology based; after all, his comic book counterpart does use tech to augment his powers.

Controller

Maybe "S.H.I.E.L.D." will turn its attention elsewhere and give characters that aren't Inhuman or Hydra based a chance. If that's the case, then Olmos could play the Controller, a character with gravitas befitting of Olmos' presence. This guy, with his super-strong exoskeleton and mind-bending slave discs, went toe to toe with Iron Man regularly in the '70s before receiving a total system upgrade from Thanos. Yep, Thanos. If Marvel's looking for another way to tie "Agents of S.H.I.E.L.D." in with the feature films, specifically "Guardians of the Galaxy," having a guy like Controller around could be a smart move. Changing Controller's real name from "Basil Sandhurst" to "Robert Gonzalez" would be a pretty smart move, too.

Purple Man

When you "mind control" in a Marvel context, there's one bad guy that springs to mind immediately: the Purple Man. Zebediah Killgrave -- a name that we actually don't want to see go away -- was originally an international spy whose life was forever changed when a chemical accident turned his skin purple and gave him the ability to manipulate the minds of others. Purple Man started out as a low-level Daredevil villain, toiling away in anonymity until Brian Michael Bendis made him Jessica Jones' arch-nemesis in the original "Alias" series. Since then, Purple Man's invasive and horrifyingly creepy manipulation powers have spelt big trouble for any character he comes across.

It's much more likely that the Purple Man will feature in the upcoming Netflix series "A.K.A. Jessica Jones," but that doesn't mean he has to debut there. Olmos' Purple Man could easily make an appearance on "Agents of S.H.I.E.L.D." and drop hints for the upcoming batch of Netflix shows. After all, #ItsAllConnected.