Men in Black III finds Agent J (Will Smith) traveling back in time to the 1960s to save a younger version of his partner Agent K (Josh Brolin). With this time-tripping storyline comes some alien creatures from the Golden Age of sci-fi as created by legendary make-up artist and special effects supervisor Rick Baker. Baker has offered up a behind-the-scenes look at some of these extraterrestrials, including a peek at Jemaine Clement as the alien Biker Boris, which you can check out here!