Peter Ludlow ("The Lost World") too. He's a wimp, but he's far from harmless. He still threw his own uncle under the buss and dehumanized Malcolm, and his IDW version is a good indication that he would've become worse over time if his plan would've succeeded. People who behave like him in real-life are often far worse than presented in the movie. Because he was written as not evil enough to be recognized and not sympathetic enough to be liked, many people think he's a joke, and some even think he's not evil at all. They are wrong. Technically evil is still evil.
Voldemort. I've seen so many memes on like how "Vader conquered galaxies, Sauron conquered Middle-Earth, but Voldemort failed to conquer a high school".