WarnerMedia Orders ‘Gremlins’ Prequel for Streaming Service From Warner Bros. Animation and Amblin Television First Look: “Gremlins: Secrets of the Mogwai” teaser image hints at what’s to come from 10-episode animated prequel. Los Angeles, July 1, 2019 – WarnerMedia has ordered “Gremlins: Secrets of the Mogwai,” a 10-episode, half-hour prequel to original “Gremlins.” In the animated television adaptation, we …