Once upon a time in Hollywood, they made us laugh, cry and believe in true love. They were charming heartthrobs, the quirky best friends, the wide-eyed dreamers. But then they snapped. Literally and what followed were some of the most iconic villain performances in cinematic history. Moments when our favorite stars turned dark and deliciously dangerous, proving they were more than just pretty faces on a poster. There’s just something irresistible about watching a familiar, friendly face descend into madness, cruelty and cold-blooded chaos. These performances often steal the spotlight from the heroes and honestly, we’re not mad about it. Angelina Jolie (Maleficent) Who else could rock black horns, contour…