Alicia Acosta is a professional storyteller from Andalusia (Spain). She works with groups of children in schools and combines her work with her background as a psychologist to promote a love of reading. She is also a radio anchor and organizes theater workshops. Her books Little Captain Jack and Peque y yo were a finalist for the International Latino Book Award.

Mar Ferrero studied Fine Arts in Madrid. She was a cartoonist for some time before becoming an illustrator, which she has now been doing for many years. She has illustrated books and puzzles for Spain, USA, France, United Kingdom, China and Korea. She also writes and publishes her own short stories. Her preferred means of transport is the bike.. She is learning to play the square tambourine, and when she grows up she wants to be a potter. She lives in a town in the mountains near Madrid with her partner, her two daughters, a dog, four chickens and five fish.