Popsugar Entertainment Joker Joker Movie 2019 Cast The Joker Is Hitting the Big Screen With a Star-Studded Cast — Check Out the Full List 3 April 2019 by Mekishana Pierre View On One Page Photo 2 of 14 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 Frances Conroy as Penny Fleck Conroy will portray Arthur's mother, Penny. Previous Next Start Slideshow JokerMovie CastingMoviesJoaquin Phoenix