Charlie wants to be a superhero and gets an incredible costume. He decides that he will be called Super F after the  flies he loves so much. But can a superhero wear glasses? And what will his superpower be? Charlie has no doubt: he wants to be invisible!

Margarita del Mazo   is a writer and storyteller who is greatly admired in Spain. She has almost twenty books to her name, many of which have been translated into other languages. Among them are the bestsellers  Camuñas  and  The Floc k, winning the Madrid Booksellers Guild Award and the Miami Cuatrogatos Foundation Award for best illustrated children's book.Guridi is an artist from Sevilla. Since 1995, he's worked and experimented professionally almost every aspect of design, image and advertisement.  He's published over seventy books. His work is highly valued in Spain, while also being recognized abroad. His books have been published in USA, France, Germany, Italy, Libano He currently combines his work as teacher with his career as a children's book illustrator.