Vin Diesel has a long history of teasing his presence in the Marvel movie universe. He first revealed to his fans that he'd 'merged brands' with the studio back in September 2013. It was later revealed that he'd taken on the voice role of Groot in Guardians of the Galaxy. As that blockbuster was just hitting theaters, he then went onto to tease a potential role in Inhumans, a movie later confirmed that August by Marvel. Now, he is back, once again hinting that he has landed a role in this epic sci-fi adventure.
In August, Vin Diesel teased, "I get the strange feeling that Marvel thinks I'm Inhuman." Now he has posted a photo of himself on his personal Facebook page with a similar, yet vague, mantra, asking "Are You Inhuman?" This certainly has many fans speculating that he will take on the role of Black Bolt in the movie, which is set for release in November 2018. Especially since his shirt features the logo for Inhumans. While on the set of Guardians of the Galaxy, the actor did openly discuss his involvement in the movie, though it has never been announced by Disney nor Marvel that he has officially signed on.
Inhumans was created by Stan Lee and Jack Kirby, making their first appearance in the 1965 "Fantastic Four" issue #45. The story will follow a race of highly advanced humans who live in the city of Attilan, the result of a Kree experiment. They have developed special powers through Terrigen Mist, which allows them a selective breeding process to pass on their abilities. Black Bolt is the leader of the Inhuman Royal Family, and he has the ability to unleash a powerful, concussive force through the use of his voice (just like Vin Diesel).
If Vin Diesel is playing Black Bolt, its interesting to note that the character is mute, so we would never actually hear him speak. In Guardians of the Galaxy we only hear Vin's voice as Groot. So this would even out his presence in the Marvel universe. It will be a more interesting turn of events if Black Bolt is introduced in Guardians of the Galaxy 2, where the character might even interact with Groot. What do you guys think?