Even though we've known for nearly two years that Action would be joining the star-studded cast, we still have no clue what his role in the movie will be. The film will also star Robert De Niro, Joe Pesci, Al Pacino, Jesse Plemons, and more, but it's unclear how Action will fit in with the rest of the cast's story.

In late September, he gushed about the movie on Instagram. "TOO MANY STARS ALIGNED. THE IRISHMAN IS UNREAL. I'M SO F-----G HAPPY," he wrote. In another previous post with De Niro and Scorsese, he wrote, "Religious Art."

"You watch so many movies, these people become part of your lives," he also said of the movie's leading actors in an interview with Seth Meyers.

When asked how he felt about filming this movie as a true New-Yorker, he said he wasn't nervous. "I was just chilling all day long honestly."