The Hollywood star, who recently voiced the human-like tree Groot in ‘Guardians of the Galaxy,’ recently implied he is involved in another Marvel franchise. On Sunday (Dec 28th) Diesel took to Facebook and posted a photograph of himself sporting a black vest with the "Inhumans" logo on the chest, as well as the message "Are you Inhuman?" in the background. However, this isn’t the first time the 47-year-old actor showed interest in this particular role. This past August he once again posted a message on the social media site that read, "I get the strange feeling that Marvel thinks I'm Inhuman... Haha."