Batman Unlimited: Monster Mayhem 2015Last updated this post: 2 August, 2015 Batman Unlimited: Monster Mayhem 2015 film The Dark Knight assembles his heroic friends like Green Arrow and Nightwing to stop the Joker and his cronies from unleashing a diabolical computer virus. Release date: August 18, 2015 (USA) Director: Butch Lukic Music composed by: Kevin Riepl Screenplay: Heath Corson Producer: Butch Lukic Cast View 5+ more Troy Baker Joker Roger Craig Smith Batman Khary Payton Cyborg Chris Diamantopoulos Green Arrow Will Friedle Nightwing SERVER 1 HDAmelia 2.0 2017 HDLying and Stealing 2019 HDThe Changeover 2017 HD720Heart of the Holidays 2020