Pitched as a wild antidote to the straightforward heroics of its corporate brethren, this low-level DC title, based on the premise of a group of imprisoned super villains put together as part of a top secret government program in which they would save the world in exchange for reduced prison sentences, was arguably the biggest fuckup of such a potentially interesting comic book-inspired idea since the infamous “Howard the Duck”—it was far too stupid, ugly and hateful to work as the mass-market blockbuster it was promoted as, way too restrained, timid and bloodless to succeed as the edgy anti-blockbuster that it presumably wanted to be and was little more than a haphazard assemblage of messy set pieces that were sometimes briefly enlivened by Margot Robbie’s inspired turn as the kooky-crazy Harley Quinn (a role she would find a better vehicle for in “Birds of Prey” (2020)) and dragged down to Mariana Trench-like depths during the blessedly brief moments when Jared Leto wandered on to deliver his a…