The author is a Catalan teacher and writer with a degree in literature. He has been a contributor for various magazines and newspapers. He has won two journalism prizes and was the director of the magazine 'Descobrir Catalunya' and editor in chief of the magazines 'Infància' and 'Altaïr'.

Ralph del Valle (1978). His first novel Gnadenlos (Sin compasión) [Gnadenlos (Without Mercy)], a caustic portrait of a lost generation seen through the prism of advertising agencies, won the IV Pemio de Creación Literaria de Budok in 2012.

Ramon Besora Oliva is a teacher, editor and writer. He is the author of various publications and articles concerning teaching, children's creativity, the construction of readers, poetry, experimentation in poetry and he has also written several titles for children.

Ramón D. Veiga, a Licentiate in Hispanic Philology, has been working since 1996 in the publishing field. For children he has published in Galician: Violeta wants to be a vampire. Un conto do Samaín, É tempo de entroido!, A araña que lles tiña medo ás arañas, Meigas fóra!, Non pare a festa.

Ramon Erra is a graduate in political science and gives classes at the Ateneu Barcelonés school of writing. He has contributed to El 9 Nou, La Marcha, El Tiempo, Presencia, El Temple, La Rella and El Avui. In 2001 he won the Rafael Cornellà prize for for a literary portrait of Bohumil Hrabal.

Raquel Brune was born in Madrid in 1994 which means that she's been waiting for her letter from Hogwarts for fourteen years now. In the meantime she studied for a joint honours degree in Publicity and Business Administration before trying her luck working in communications.

A native of Seville, Raquel Díaz Reguera is one of Spain's best known children's picture books authors, achieving phenomenal sales with titles such as 'Yo voy conmigo' ('I'll Go My Own Way') , 'Hay algo más aburrido que ser una princesa rosa' ('Is There Anything More Boring Than Being a Fairytale

Raquel Díez (Jerez, 1982) holds degrees in Psychopegagogy (2005) and Advertising and PR (2007) from the University of Cadiz. She is the author of children's and YA books and has taught Infant and Primary Education since 2005.