José Martín Gris worked in the audiovisual field for twenty years, producing publicity for the world of finances, documentary films and TV series. In 1995, he started working in the education of health, diversity and development. He is the creator of the character Pipsqueak. He has written the scripts of both of the cartoon series and several stories for children, all about this character. He has also published three adult books: Maneras de Cocinar verduras y hortalizas, Maneras de cocinar legumbres (Grijalbo, 2018 – Together with Emma Ros), Para adelgazar utiliza tu cerebro. Historias para no engordar (Use your Mind to Lose Weight. Stories to Avoid Gaining Weight, Zenith) and Cuidado con los deseos, se pueden cumplir ((Be Careful with What You Wish For, They Can Come True, RBA). In 2012 he started to explore the gastronomic world, generating content for Internet.
- Maneras de Cocinar verduras y hortalizas (Grijalbo, 2018), with Emma Ros.
- Maneras de cocinar legumbres (Grijalbo, 2018), with Emma Ros.
- Cuidado con los deseos, se pueden cumplir (RBA, 2008)
- Para adelgazar utiliza tu cerebro. Historias para no engordar (Zenith, 2007)