Jess Sanders is a social worker and bestselling, award-winning author of books including Love Your Body, Be Your Own Man and the Life Lessons for Little Ones series. Jess has a passion for creating resources that nurture positive mental health and promote gender equality. Every project she pursues is born from the question, 'Why does it have to be this way?'. Jess is regularly invited to speak on radio and at events about her work and her books.

César Barceló has a degree in Fine Arts from the University of Valencia (Spain). His career as an illustrator began when he did a  Postgraduate Illustration Course in Barcelona (Spain). His style can be seen in numerous works such as the posters for the Jazz festival at the Botànic in Valencia and for the Valencia Book Fair 2012. He won the Generalitat Valenciana Award for the best illustrated book in Valencian, 2004.