César Sánchez Sánchez (Madrid, 1970)  studied in the Faculty of Science and Mathematics but never practised either because, as he says, "his brain box isn't big enough". He has published the novel De vivio (On Vice; Relee, 2016) under the pseudonym Arturo G.

María Ramos (Cáceres, 1984) is an illustrator and writer of comics and children's books. She has a Fine Art degree from the Universidad de Salamanca and currently lives in Madrid. She has taken part in a range of collective projects such as ¡Qué Suerte!

César Vidal (Madrid, 1958) is a Spanish historian, writer and communicator who has been living in the United States since 2013. He has a PhD in History from UNED, and his thesis was entitled From Pentecost to Jamnia: Judeo-Christianity in Palestine in the 1st century.

Chiki Fabregat was born in 1969 in a Madrid which still had trams running through it, although she doesn’t remember them. She grew up listening to stories where she and her brothers were the protagonists, because her father is a children’s book writer.