2. Lavender Brown (Harry Potter and the Half Blood Prince)
Lavender was just a pointless distraction to the main action, and its baffling as to why Ron would choose her as a paramour over the brainy hotness that is Miss Hermione Granger. Remember when she breathed on the train window and drew a love heart? I certainly do, because I was cringing so hard in my theatre seat that I looked like a crinkle-cut potato crisp. Still not convinced? Won-won. That is all that needs to be said.