Carmen Gil Martínez (Cádiz, 1962) is a Spanish writer and Literature teacher who writes and illustrates stories, theater, and poetry for children. She began publishing books in 2003, date from which more than 90 of her works have been published, many of them translated into various languages, apart from all those of the Spanish territory. She specializes in children's literature, work that she shares with teaching and cultural animation for children. She has carried out theater projects, puppets, storytelling, dance workshops, etc. She teaches poetry courses in primary schools. She gives talks to encourage reading for families and teachers. She collaborates with various institutions (Instituto Cervantes, Centro Andaluz de las Letras, Autonomous Governments, Universities ...) giving some conferences and holding meetings with readers. In 2011, the Junta de Andalucía awarded him the Gold Medal of Merit in Education for his work to encourage reading.

Mónica Carretero was born in Madrid, but now lives happily in Segovia, where she draws colorful illustrations and writes books for children. She assures that her job makes her feel alive. A passion well depicted in her sunny drawings and original, cheerful characters. She has illustrated dozens of books, games, and posters for Spain, England, France, Korea, Australia, and the United States. Since 2011, her work has been recognized on several occasions, being awarded at the London Book Fair, the Latino Book Awards in the United States, and also in the BookExpo America.