Superhero fatigue? Warner Brothers and DC Comics have a remedy for that with "Suicide Squad," filled with characters who are decidedly uninterested in heroics. "We're bad guys," sneers demented clown Harley Quinn, in case there was any question. They're so bad, that the narrative around the film has centered around the on-the-set antics of the cast and crew. While the tales of pranks and anarchy are starting to feel like the Squad doth protest too much, writer/director David Ayer and crew have delivered a refreshingly sarcastic and cynical slice of comic book mayhem, with just a drop of syrupy sweetness.