Fans know that a hero is only as good as their villain, and that adage proved especially true in regards to 1980s animated series. The decade produced several great baddies that terrorized (or just straight-up murdered) our heroes in both animated and action-figure form. From Masters of the Universe to Transformers, here is a ranking of the decade’s most iconic cartoon foes that gave heroes like He-Man and Optimus Prime a run for their money. And for more nostalgia-fueled write-ups, be sure to check out the following links: 11 Great ‘90s Animated Series We …