Batman Unlimited: Monster Mayhem (2015) is a Action, Animation, Family film that follows the Joker is aided in his Halloween quest to render modern technology useless and take over Gotham City by Solomon Grundy, Silver Banshee, Clayface and Scarecrow. Currently, you can watch Batman Unlimited: Monster Mayhem on Amazon Video, Apple TV Store, Google Play Movies, YouTube. Streaming availability may vary by country and platform over time. It has a user rating of 6.2 out of 10 from 161 votes. Fans of action movies may also want to explore similar titles below.