8. Florean Fortescue
The name Florean Fortescue might not mean a whole lot to the casual Potter fan, though this Diagon Alley ice cream man was once pencilled in for a sub-plot that linked him with the all-important Elder Wand. Unfortunately for Florean, JK decided that the story wasnt really going anywhere, and so he wound up on her hit list. Fortescue provided Harry with free ice cream sundaes every half an hour (nice guy, poor businessman) while young Potter was staying at the Leaky Cauldron during the summer of 1993, a simple act of kindness that seemed to be opening the door to a future relationship, though it wasnt meant to be. I seemed to have him kidnapped and killed for no reason, JK wrote on her Pottermore website, he is not the first wizard Voldemort murdered because he knew too much (or too little), but he is the only one I feel guilty about, because it was all my fault. Poor old Florean, he became a loose end and paid the ultimate price unceremoniously dragged from his ice cream parlour by Death Eaters and murdered by Voldemort, all because his story didnt fit.