Marvel Studios may be preoccupied with negotiations to keep Robert Downey Jr. onboard for The Avengers 2, but in the meantime, the rest of Phase Two continues to move forward.

Iron Man 3 (predictably) set the box office on fire last week, and while the upcoming Thor: The Dark World and Captain America: The Winter Soldier are almost certainly going to emerge as hits, the real question lies with next year’s Guardians of the Galaxy.

The film has already secured the bulk of its main cast, including Chris Pratt, Zoe Saldana and Dave Bautista. However, now Enzo Cilenti – who’s also set to appear in Kick-Ass 2 this summer – has announced on Twitter that he too has joined the film.

I may or may not be in #Guardiansofthegalaxy. I am sworn to secrecy so can’t say. In entirely unrelated news, “I am”.

— Enzo Cilenti (@EnzoCilenti) May 8, 2013

It’s not surprising that this tweet has apparently been deleted since its posting. Marvel is notorious for wanting to keep its casting quiet until the studio can make an official announcement. Cilenti has appeared in numerous films and TV series since the late 1990s, including films like The Rum Diary and Next. So there’s really no telling what role he may play in Guardians of the Galaxy.

Most of the lead characters have been cast, but is it possible that the English Cilenti could be playing one of the two remaining members of the Guardians? Rocket Raccoon has been said to be the “heart” of the film and is typically portrayed with a British accent, after all.

Rumors have emerged that Doctor Who actor David Tennant may be up for the part, but nothing official has come out yet. Plus, given Marvel’s tendency to snatch up rising stars for key roles (Jeremy Renner, Chris Hemsworth, Pratt) rather than casting the biggest names in Hollywood, it’s not totally out of left field for the studio to give the role to someone like Cilenti. This is all purely speculation at this point, but Guardians will have to start finalizing its cast list in the near future to stay on schedule.

Do you want Marvel to cast a lesser-known actor like Cilenti in Guardians, or would you prefer they go with a bigger name? Let us know in the comments section below.

Marvel will release Thor: The Dark World on November 8, 2013, Captain America: The Winter Soldier on April 4, 2014, Guardians of the Galaxy on August 1, 2014The Avengers 2 on May 1, 2015, Ant-Man on November 6, 2015, and Doctor Strange sometime after that.

Source: Twitter (via Comic Book Movie)