In Illness and Disability , by J.K. Rowling, she clearly states: "This is the reason that Gilderoy Lockhart, victim of his own mangled Memory Charm, has permanent amnesia..." Yet there were situations where the Memory Charm was reversed. For example, in The Deathly Hallows , Hermione reversed the Obliviate Charm on the Death Eaters and the waiter: "Then, on Harry’s count of three, they reversed the spells upon their three victims, and before the waitress or either of the Death Eaters could do more than stir sleepily..." Does a spell backfiring not have a cure? Besides Ron and his slugs, the only time a spell backfired that I can recall is Voldemort's, which he was able to cure in the end, and that was a Killing Curse, which is supposed to be incurable and unblockable. Any thoughts? Answer Gilderoy Lockhart was a very accomplished Obliviate user. “So you’ve just been taking credit for what a load of other people have done?” said Harry incredulously. “Harry, Ha...