9. Mad Eye Moody
Mad Eye was responsible for half of the inmates in Azkaban making him a bit of a Lad amongst his fellow peers. With at least five N.E.W.Ts under his belt Moody proves that you don't need a strong education to make a difference; though unfortunately for muggles, University is probably a good idea as people don't accept the occupation of Auror as an actual career path. Mad Eye was so dedicated to the cause that it literally caused him to fall apart; he lost an eye, a leg and his nose which eventually led to paranoia about his safety, despite his ability. His creepy eye was also very helpful for capturing Death Eaters as he could see things that others simply couldn't.