Michael Keaton as Vulture was the most sympathetic villain- his city got destroyed by Avengers carelessness, then his business got ruined by Stark-connected cronyism. He makes a speech about how the Avengers don't care who they crush and he's fighting back how he can- then oops just murdered guys!!

He even starts odd showing how much as a person he genuinely cares about his family and employees but is getting smushed by superheroes not caring about people like them, then abruptly switches and decides he will start killing all his employees to BEAT SPIDERMAN!!