The Dark Knight isn't seeking tricks or treats when Gotham City's most lethal villains take to the streets on Halloween night in the newest DC Comics animated film, Batman Unlimited: Monster Mayhem. Be part of the World Premiere when Batman, Green Arrow, Cyborg, Nightwing, and Red Robin cross paths with the Joker and his crew of misfit criminals in a battle for control of Gotham City. Enjoy the movie, then stick around for a lively panel featuring Roger Craig Smith (Batman: Arkham Origins), Troy Baker (Batman: Assault on Arkham), Khary Payton (Teen Titans Go!), Will Friedle (Batman Beyond, Boy Meets World), Yuri Lowenthal (Ben 10), and screenwriter Heath Corson (Batman: Assault on Arkham). Moderator Greg Miller (KindaFunny.com) will have exclusive prizes, and he might even introduce a few surprise guests. Batman Unlimited: Monster Mayhem will be released via Warner Bros. Home Entertainment on Digital HD August 4 and on Blu-ray Combo Pack and DVD August 18.