It's hard being a protagonist. You make countless sacrifices, battle through countless levels, die countless deaths, and for all your hard work, you're still never going to be as cool as the villain. It's surprising how few goody-two-shoes ever make the transition to bad guy status and take advantage of its perks: cooler costume, army of minions, a chill flying death fortress to hang out in while those sucker heroes come to you.

But when they do, it's always a big event. We're talking about genuine good guys (playable protagonists) that somehow end up on the opposing side (antagonists that need to be taken down). Here's our list of the 8 greatest heroes-turned-villains in videogame history.