Adam B. Vary Senior Entertainment Writer SPOILER ALERT: This story discusses plot developments in Episode 2 of Marvel Studios’ “Secret Invasion,” currently streaming on Disney+. Samuel L. Jackson has played the super spy Nick Fury in 11 movies for Marvel Studios. Sometimes, he’s appeared in only a brief cameo; other times, he’s been the second or third lead in a movie with “Captain” in the title. In every appearance, Jackson exudes preternatural calm and cunning as one of the most formidable, non-superpowered humans in the Marvel Cinematic Universe. But it wasn’t until the actor’s first foray as the lead in an MCU project — the Disney+ series “Secret Invasion” — that Marvel has really addressed the fact that Nick Fury is also a Black man who grew up in America.