24 of 44
Dr. Jonas Martin (Randy J. Goodwin)
We loved him because: We didn't. Jonas was a jerk who was working with Elijah to get that freaking moonstone, and he didn't care who he hurt along the way. He even had the nerve to try to kill Matt. Matt! Harmless, clueless Matt! It turned out he was doing it all to save his daughter Greta from Klaus ... but Greta turned out to be awful, and she didn't deserve to be saved anyway.
We lost him because: After his son Luka died (more on that later), Jonas was super mad. He decided to kill Elena, but he made the wrong move when he accidentally attacked Katherine instead. She almost killed him, and Stefan appeared just in time to finish the job.