'Rick and Morty,' 'The Simpsons' producer J. Michael Mendel dead at 54
6:28am PDT - September 24th, 2019 rick and morty season 4 - USA TodayJ. Michael Mendel, a producer for "The Simpsons" and "Rick and Morty" has died at 54. Co-creators Justin Roiland and Dan Harmon paid tribute.