Find what Harry Potter character is hidden behind each letter
Try French version : https://www.jetpunk.com/user-quizzes/288302/harry-potter-enigme-personnages
I agree with Elboy, excellent one. With the love of the French section for Harry Potter related quizzes, it would surely be a great success. Feel free to ask for help if you want to do that but have difficulties with French. ;-)
You should translate this one into French, it will definitely be successful.