In a back and forth to somewhat rival John Barrowman's involvement in the Doctor Who 50th Anniversary special, Vin Diesel is hinting once again that he is part of a Marvel project.
Diesel posted the image below on his Facebook page and although it was taken down from the main page, it can still be found in the photo albums.
That, of course, would be the Guardians of the Galaxy member, Groot.
Despite Marvel Studios president, Kevin Feige, saying that Diesel wasn't involved in anything at the studio any time soon, could he be the voice of Groot?
Hopefully we'll know either way very soon!