6. Wes Hayden, The Bachelorette Season 5 and Bachelor Pad Season 1
From the moment he broke out his guitar and announced he was a big deal in Chihuahua, Mexico, Wes Hayden became the sleazeball contestant everyone knew was just using the show to promote his music. For some reason, Jillian Harris was into him anyway, letting him play the same song over and over again. After Jake Pavelka returned to the show to tell Jillian about Wes's alleged girlfriend back home (Wes denied it), a lot of viewers thought Jillian should kick him to the curb. But she didn't. When he was finally eliminated, Wes shocked folks at home by announcing in the limo that he was the first guy to make it to the final four with a girlfriend back home. And if that didn’t cement his place in villain history, his role in the breakup of then-friends Gia Allemand (pictured above right) and Vienna Girardi (his Bachelor Pad sweetie and rumored post-BP fling, respectively) certainly did.